windows-xp/Source/XPSP1/NT/base/mvdm/wow16/gdi/gdi.api

;===========================================================================
;
; For WOW only
;

;===========================================================================
;
; Validation constants
;
PS_MAX		equ	6
HS_MAX		equ	5
BS_MAX		equ	5
FW_MAX		equ	1000
OUT_MAX 	equ	7
CLIP_MAX	equ	2
QUALITY_MAX	equ	2
DIB_MAX 	equ	1
PFILL_MIN	equ	1
PFILL_MAX	equ	2
EFF_MAX 	equ	1
OBJ_MIN 	equ	1
OBJ_MAX 	equ	2
STOCK_MAX	equ	16
RGN_MIN 	equ	1
RGN_MAX 	equ	5
BK_MIN		equ	1
BK_MAX		equ	3 ;SHOULD let TRANSPARENT1 ROP code go through.
R2_MIN		equ	1
R2_MAX		equ	16
STR_MIN 	equ	1
STR_MAX 	equ	3
PFILL_MIN	equ	1
PFILL_MAX	equ	2
MM_MIN		equ	1
MM_MAX		equ	8
DIB_MAX 	equ	1
PR_MAX		equ	4
RM_MAX		equ	2
DIB_RGB_COLORS	equ	0 
CBM_INIT	equ	4
BI_RGB      	equ	0

TA_VALID	equ	0001fh
GLYPH_VALID	equ	00003h
MAPFLG_VALID_L	equ	00001h
MAPFLG_VALID_H	equ	00000h
CBM_VALID_L	equ	00004h
CBM_VALID_H	equ	00000h
ETO_VALID	equ	00007h
PC_VALID	equ	00007h

CCHDEVICENAME	equ	32



;special error codes

SP_ERROR	equ	-1


;============================================================================
;
; Special ATM hackery (See ATM HACK comments in dcman1.asm)
;
;ExternFP    <LoadLibrary>		TEMPLY !!!!!!!!!!! ChandanC
;ExternFP    <FreeLibrary>		TEMPLY !!!!!!!!!!! ChandanC
;ExternFP    <GetProcAddress>		TEMPLY !!!!!!!!!!! ChandanC
;
; Macro to set up stubs required for ATM's GDI patching code
;
ATM_LPFN    macro   gdifunc, kernfunc
IFNDEF	WOW
    db	09ah				; call far instruction
public	gdifunc&kernfunc
gdifunc&kernfunc:
    dd	kernfunc
ENDIF
endm

;
; Argument types
;
IFNDEF	WOW
ExternFP    <IsGDIObject>
ExternFP    <IsValidMetaFile>
ENDIF

P_LPSIZE    equ <P_LPPOINT>
P_LPSIZE0   equ	<P_LPPOINT0>

;
; Generate a GDI object validation macro.
;
; If nullok is 1, allow NULL.
; min & max are the allowed OBJ_* range.
; except, if specified, is an OBJ_* value within the range to reject.
;
_GenHGDI    macro   name,func
    P_&name &macro  hObj,opts
        _GenParm    <hObj>,2,<opts>
	if VLgen
	    IFNDEF WOW
		mov	bx,_P_&&hObj
		lcall	V&name
		_gensub name
		_gensub VGOT
	    ENDIF
        endif
    &endm

    P_&name&0 &macro  hObj,opts
        _GenParm    <hObj>,2,<opts>
	if VLgen
	    IFNDEF  WOW
		mov	bx,_P_&&hObj
		lcall	V&name&0
		_gensub name
		_gensub VGOT
	    ENDIF
        endif
    &endm
endm

_GenHGDI    <HGDIOBJ>
_GenHGDI    <HPEN>
_GenHGDI    <HBRUSH>
_GenHGDI    <HFONT>
_GenHGDI    <HPALETTE>
_GenHGDI    <HBITMAP>
_GenHGDI    <HRGN>

; HDC variants: HDC - Any kind of DC except a metafile DC

_GenHGDI    <HDC>

; Anything including a metafile DC

_GenHGDI    <HDCMETA>

P_HDCNOTMEM equ <P_HDCMETA>

; output-only DC - metafiles ok but no ICs allowed

_GenHGDI    <HDCNOIC>

; output-only DC - neither metafiles nor ICs allowed

_GenHGDI    <HDCNOICNOMETA>

; GetObject(): Pen, brush, font, palette, or bitmap.
;
_GenHGDI    <HGDIOBJGET>

; UnrealizeObject(): Brush or palette
;
_GenHGDI    <HGDIOBJUNR>

; SelectObject(): pen, brush, font, bitmap, region (no palette)
;
_GenHGDI    <HGDIOBJSEL>

; Metafile handle
;
P_HMETAFILE macro   hmf,opts
    _GenParm    <hmf>,2,<opts>
    if VLgen
	IFNDEF	WOW
	    mov	ax,_P_&hmf
	    lcall	 VHMETAFILE
	    _gensub VHMETAFILE
	ENDIF
    endif
endm

_GenHGDIX   macro   name,errtyp,lseg,min,max,except
local   badobj
local   objok
local   trap

IFNDEF	WOW
public V&name&0&lseg
V&name&0&lseg:
	 or	 bx,bx
	 jz	 objok

public V&name&lseg
V&name&lseg:
	 lcall	  VGetObjType
    ifnb <except>
	 cmp	 ax,except
	 jz	 badobj
    endif
    ife min-max
	 cmp	 ax,min
	jne	badobj
	errnz $-objok
    else
	 cmp	 ax,min
	 jb	 badobj
	 cmp	 ax,max
	 ja	 badobj
    endif
objok:
	 ret
badobj:
	 mov	 ax,cx
	 mov	 bx,ERR_BAD_&errtyp
	 ljmp	 Inval_Param_
ENDIF
endm    ; _GenHGDIX

;
; Macro that gets expanded in each LAYER_EXPAND invocation.  Includes common
; subroutines for parameter validation.
;
EXTRA_EXPAND    macro   lseg

ifdef       genHGDIOBJ&lseg
_GenHGDIX   <HGDIOBJ>,GDI_OBJECT,lseg,OBJ_PEN,OBJ_METAFILE  ; DeleteObject: any kind of object
endif

ifdef       genHPEN&lseg
_GenHGDIX   <HPEN>,lseg,HPEN,OBJ_PEN,OBJ_PEN
endif

ifdef       genHBRUSH&lseg
_GenHGDIX   <HBRUSH>,HBRUSH,lseg,OBJ_BRUSH,OBJ_BRUSH
endif

ifdef       genHFONT&lseg
_GenHGDIX   <HFONT>,HFONT,lseg,OBJ_FONT,OBJ_FONT
endif

ifdef       genHPALETTE&lseg
_GenHGDIX   <HPALETTE>,HPALETTE,lseg,OBJ_PALETTE,OBJ_PALETTE
endif

ifdef       genHBITMAP&lseg
_GenHGDIX   <HBITMAP>,HBITMAP,lseg,OBJ_BITMAP,OBJ_BITMAP
endif

ifdef       genHRGN&lseg
_GenHGDIX   <HRGN>,HRGN,lseg,OBJ_RGN,OBJ_RGN
endif

; GetObject(): Pen, brush, font, palette, or bitmap.
;
ifdef       genHGDIOBJGET&lseg
_GenHGDIX   <HGDIOBJGET>,GDI_OBJECT,lseg,OBJ_PEN,OBJ_BITMAP
endif

; UnrealizeObject(): Brush or palette
;
ifdef       genHGDIOBJUNR&lseg
_GenHGDIX   <HGDIOBJUNR>,GDI_OBJECT,lseg,OBJ_BRUSH,OBJ_PALETTE,OBJ_FONT
endif
; SelectObject(): pen, brush, font, bitmap, region (no palette)
;
ifdef       genHGDIOBJSEL&lseg
_GenHGDIX   <HGDIOBJSEL>,GDI_OBJECT,lseg,OBJ_PEN,OBJ_RGN,OBJ_PALETTE
endif

; HDC variants: HDC - Any kind of DC except a metafile DC

ifdef       genHDC&lseg
_GenHGDIX   <HDC>,HDC,lseg,OBJ_DC,OBJ_METADC
endif

; Anything including a metafile DC

ifdef       genHDCMETA&lseg
_GenHGDIX   <HDCMETA>,HDC,lseg,OBJ_DC,OBJ_METAFILE
endif

; output-only DC - metafiles ok but no ICs allowed

ifdef       genHDCNOIC&lseg
_GenHGDIX   <HDCNOIC>,HDC,lseg,OBJ_DC,OBJ_METAFILE,OBJ_IC
endif

; output-only DC - neither metafiles nor ICs allowed

ifdef       genHDCNOICNOMETA&lseg
_GenHGDIX   <HDCNOICNOMETA>,HDC,lseg,OBJ_DC,OBJ_DC
endif

IFNDEF	WOW
ifdef genVGOT&lseg

public  VGetObjType&lseg
VGetObjType&lseg:
	 mov	 cx,bx
	 jcxz	 VGOTbad&lseg
beg_fault_trap  VGOTtrap&lseg
	 mov	 ax,_DATA
	 mov	 es,ax
	 mov	 bx,es:[bx]
	 mov	 ax,es:[bx].ilObjType
end_fault_trap
	 and	 ah,high(not OBJ_FLAGS)
	errnz	low(Stock)
	 ret

VGOTtrap&lseg:
	 fault_fix_stack
VGOTbad&lseg:
	 xor	 ax,ax
	 ret

endif   ; genVGOT&lseg


ifdef genVHMETAFILE&lseg

public  VHMETAFILE&lseg
VHMETAFILE&lseg:
	push	ax
	push	ax
	call	IsValidMetaFile
	or	ax,ax
	pop	ax
	jz	@F
	ret
    @@:
	mov	 bx,ERR_BAD_HMETAFILE
	jmp	 short Inval_Param_&lseg

endif   ; genVHMETAFILE&lseg
ENDIF

endm    ; EXTRA_EXPAND

P_ROP	    equ <P_DWORD>
P_COLORREF  equ <P_DWORD>

_GenLP	<P_CLPLOGPALETTE>,<CLP>,1
_GenLP	<P_CLPBITMAP>,<CLP>,1
_GenLP	<P_LPHANDLETABLE0>,<LP0>,2

_GenLP	<P_CLPBITMAPINFOHEADER>,<CLP>,1

P_CLPSTRHRSRC	equ <P_CLPSTRATOM>

_GenLP	<P_CLPDOCINFO>,<CLP>,1

P_CLPFACENAME	equ <P_CLPSTR>
P_CLPFACENAME0	equ <P_CLPSTR0>

P_LPFNABORT0 equ <P_LPFN0>
P_LPFNMENUM equ <P_LPFN>
P_LPFNOENUM equ <P_LPFN>
P_LPFNFENUM equ <P_LPFN>
P_LPFNLENUM equ <P_LPFN>

P_intN0 	equ <P_WORDMBNZ>
P_DEVCAP	equ <P_int>

P_PITCHFAMILY	equ <P_BYTE>

P_LPPOINTBUFFER macro	p, c, opts
    _DefParm	<p>,4,<opts>
    _DefParm	<c>,2,<opts>
    if VLgen
	_FlsFrame
	mov	ax,_P_&p
	mov	cx,_P_&p+2
	mov	bx,_P_&c
	shl	bx,2
	errnz	VLcbsPOINT-4
	lcall	LP
        _gensub LP
    endif
endm

P_CLPPOINTBUFFER macro   lptr, c, opts
    _DefParm    <lptr>,4,<opts>
    _DefParm	<c>,2,<opts>
    if VLgen
	_FlsFrame
        mov     ax,_P_&lptr
        mov     cx,_P_&lptr+2
	mov	bx,_P_&c
	shl	bx,2
	errnz	VLcbsPOINT-4
	lcall	CLP
        _gensub LP
    endif
endm

STRUCT <PALETTEENTRY>
F_BYTE	     peRed
F_BYTE	     peGreen
F_BYTE	     peBlue
F_BFLAGS     peFlags, PC_VALID
ENDSTRUCT

P_LPPALENTRYBUFFER  macro   c, p, opts
    _DefParm	<c>,2,<opts>
    _DefParm	<p>,4,<opts>
    if VLgen
	_FlsFrame
	mov	ax,_P_&p
	mov	cx,_P_&p+2
	mov	bx,_P_&c
	shl	bx,2
	errnz	VLcbsPALETTEENTRY-4
	lcall	LP
        _gensub LP
    endif
endm

P_CLPPALENTRYBUFFER  macro   c, lp, opts
    _DefParm	<c>,2,<opts>
    _DefParm	<lp>,4,<opts>
    if VLgen
	_FlsFrame
	mov	ax,_P_&lp
	mov	cx,_P_&lp+2
	mov	bx,_P_&c
	shl	bx,2
	errnz	VLcbsPALETTEENTRY-4
	lcall	CLP
        _gensub LP
    endif
endm
;
; lppt	- pointer to array of points: size = sum(lpcpt).
; lpcpt - pointer to array of counts of points
; ccpt	- number of point counts in *lpcpt.
;
P_POLYPOLYPOINTS macro	lppt, lpcpt, ccpt, opts
	P_LPPOINT   <lppt>,<opts>
	P_LPINT     <lpcpt>,<opts>
	P_int	    <ccpt>,<opts>
	endm

ifdef WOW
P_POLYPOLYLARGEPOINTS macro  lppt, lpcpt, ccpt, opts
        P_LPLARGEPOINT  <lppt>,<opts>
        P_LPDWORD       <lpcpt>,<opts>
        P_DWORD         <ccpt>,<opts>
	endm
endif

P_XY1XY2    macro x1,y1,x2,y2, opts
	P_int	<x1>,<opts>
	P_int	<y1>,<opts>
	P_int	<x2>,<opts>
	P_int	<y2>,<opts>
	endm

P_LPBUFFERDW macro  cb, lp, opts
	P_DWORD     <cb>,<opts>
        P_LPBYTE    <lp>,<opts>
	endm

P_LPBUFFERDW0 macro  cb, lp, opts
	P_DWORD     <cb>,<opts>
        P_LPBYTE0   <lp>,<opts>
	endm

P_CLPBUFFERDW macro  cb, lp, opts
	P_DWORD     <cb>,<opts>
	P_CLPBYTE   <lp>,<opts>
      	endm

P_LPBUFFERX	macro cb, pb, opts
	P_int	    <cb>,<opts>
	P_LPBYTE    <pb>,<opts>
	endm

ValidateHugeLP  macro cch, lp, r, null
	local	exit

ifnb <null>

	mov     ax,lp
	or	ax,lp+2
	jz	exit
endif

	push	lp+2
	push	lp
	push	cch+2
	push	cch
    call    &r
	or	ax,ax
	jz	exit
	mov	cx, lp+2
	mov	ax, lp
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
exit:
	endm 

;----------------------------------------------------------------------------;
; This macro is used to validate the buffer length for the two APIs 
; GetCharWidth and GetABCWidths. The 'size' parameter is not a part of the
; API. It is the size of each entry in the buffer. The number of entries are
; dictated by the character range passed in.

P_LPRWBUFFER macro chFirst, chLast, lpBuffer, size, opts
	local	exit

        _GenParm        <chFirst>,2,<opts>
	_GenParm	<chLast>,2,<opts>
        _GenParm	<lpBuffer>,4,<opts>

    if VLgen
	_FlsFrame

;; first validate that the character range is not inverted. 
			       
  	mov	ax,_P_&chLast		;;last character in range
	cmp	ax,_P_&chFirst		;;should not be < than first character
	jae	@F		  	;;range is proper

;; character range is not valid.

        mov     bx,ERR_BAD_VALUE	;;invalid parameter error.
        lcall   Inval_Param_
	jmp	exit

@@:

;; the size of the buffer should atleast be (chLast-chFirst+1)*size

	sub	ax,_P_&chFirst
	inc	ax			;;no of entries
	mov	bx,size			;;size of each entry
	mul	bx
	mov	bx,ax			;;total size (ignore DX)
	mov     ax,_P_&lpBuffer
	mov     cx,_P_&lpBuffer+2
	lcall   LP
        _gensub LP
exit:
    endif							    
	endm

;----------------------------------------------------------------------------;
P_CLPRECTBITSINFOBUFFER macro cyDst, xSrc, ySrc, nStartScan,nNumScans, lpBits, lpBitsInfo, wUsage, opts
 P_VALIDATEBITSINFOBUFFER DIB_DIBTODEV, cyDst, xSrc, ySrc, nStartScan, nNumScans, lpBits, lpBitsInfo, wUsage, DIB_PTR_CLP, DIB_PTR_CLP, opts
        endm
;----------------------------------------------------------------------------;
P_CLPBITSINFOBUFFER macro  cscan, lpBits, lpBitsInfo, wUsage, opts
 P_VALIDATEBITSINFOBUFFER DIB_PART_DIB, 0, 0, 0, 0, cscans, lpBits, lpBitsInfo, wUsage, DIB_PTR_CLP, DIB_PTR_CLP, opts
	endm
;----------------------------------------------------------------------------;
P_LPBITSINFOBUFFER macro   cScans, lpBits, lpBitsInfo, wUsage, opts
 P_VALIDATEBITSINFOBUFFER DIB_PART_DIB, 0, 0, 0, 0, cscans, lpBits, lpBitsInfo, wUsage, DIB_PTR_LP, DIB_PTR_LP, opts
	endm

;----------------------------------------------------------------------------;
;NOTE: It is assumed that this macro is only called from GetDIBits. The flag
;DIB_PTR_GETDIBITS is a special one which tells the ValidateDIBHeader routine
;to ignore the biClrUsed field.

P_LPBITSINFOBUFFER0 macro   cScans, lpBits, lpBitsInfo, wUsage, opts
 P_VALIDATEBITSINFOBUFFER DIB_PART_DIB, 0, 0, 0, 0, cscans, lpBits, lpBitsInfo, wUsage, DIB_PTR_LP0, DIB_PTR_GETDIBITS, opts
	endm

;----------------------------------------------------------------------------;
P_CFULLLPBITSINFOBUFFER macro lpBits, lpBitsInfo, wUsage, opts
 P_VALIDATEBITSINFOBUFFER DIB_FULL_DIB, 0, 0, 0, 0, 0, lpBits, lpBitsInfo, wUsage, DIB_PTR_CLP, DIB_PTR_CLP, opts
	endm

;----------------------------------------------------------------------------;
P_GHPACKEDDIB macro hDIB, wUsage, opts
	local	exit
	local	errexit

;; hDIB is a global handle to a apacked DIB.

        _GenParm        <hDIB>,2,<opts>
	_GenParm	<wUsage>,2,<opts>
	
    if VLgen

;; first validate the handle itself.
    IFNDEF   WOW
	mov	ax,_P_&hDIB
	lcall	GHANDLE
	_gensub GHANDLE

    ENDIF
;; validate wUsage

	mov	ax,_P_&wUsage
	cmp	ax,DIB_MAX
	jbe	@F		  	  ;; unsigned comparison to catch < 0.
        mov     bx,ERR_BAD_VALUE
        lcall   Inval_Param_
	jmp	exit
@@:

	push	si
	push	di			;;save

;; validate the header.

	mov	dx,_P_&wUsage
	xor	ax,ax
	mov	cx,_P_&hDIB		;;CX:AX has a pointer to the DIB
	mov	di, DIB_VALIDATE_COLOR + DIB_PTR_CLP

	call	ValidateDIBHeader
	or	ax,ax
	jz	@f			;;valid header
	pop	di
	pop	si			;;restore
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
	jmp	exit

@@:

;; the header has been validated. DI:SI returns the pointer past the end of
;; the DIB header and the color table. For a packed DIB this is the start of
;; the bits.

	mov	es,_P_&hDIB
	xor	bx,bx			;;es:bx-> header, di:si -> bits
	mov	cx, DIB_FULL_DIB+DIB_PTR_CLP

	call	ValidateDIBSize
	pop	di
	pop	si
	or	ax,ax			
	jz	exit			;;valid size
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
exit:
	endif
	endm
;----------------------------------------------------------------------------;
P_CLPBITMAPINFOHEADER macro lpBi, opts  
	local	exit

;; lpBi   - pointer to bitmap info header which does not have a color table

        _GenParm        <lpBi>,4,<opts>

    if VLgen

	push	si
	push	di
	mov	ax,word ptr _P_&lpBi
	mov	cx,word ptr _P_&lpBi+2
	mov	di, DIB_NO_COLOR + DIB_PTR_CLP

	call	ValidateDIBHeader
	pop	di
	pop	si
	or	ax,ax
	jz	exit
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
exit:

    endif	
	endm
;----------------------------------------------------------------------------;

P_CLPDIBITMAP0 macro dwUsage, lpInitBits, lpInitInfo, wUsage, opts
	local	validate_dib
	local	no_init
	local	exit
        local   flags_ok
	   	
	_DefParm	<dwUsage>,4,<opts>
    	_DefParm	<lpInitBits>,4,<opts>
    	_DefParm	<lpInitInfo>,4,<opts>
    	_DefParm	<wUsage>,2,<opts>
 
    if VLgen
	_FlsFrame

ifdef	DEBUG
	mov	ax,_P_&dwUsage
	mov	cx,_P_&dwUsage+2
	test	ax,not(CBM_VALID_L)
	jnz	@F
	test	cx,not(CBM_VALID_H)
        jz      flags_ok
@@:	
        mov     bx,ERR_BAD_DFLAGS
        lcall   Inval_Param_
flags_ok:

endif ;DEBUG
	
;; the rest of the validation depends on the value of dwUsage.

	cmp	word ptr _P_&dwUsage+2,0
	jne	no_init
	mov	ax, word ptr _P_&dwUsage
	cmp	ax,CBM_INIT
	je	validate_dib

no_init:
	mov     ax,_P_&lpInitBits
	mov     cx,_P_&lpInitBits+2
	xor	bx,bx
	lcall   CLP0
        _gensub LP

	mov     ax,_P_&lpInitInfo
	mov     cx,_P_&lpInitInfo+2
	xor	bx,bx
	lcall   CLP0

	mov	ax,_P_&wUsage
	cmp	ax,DIB_MAX
	jbe	@F		    ;; unsigned comparison to catch < 0.
        mov     bx,ERR_BAD_VALUE
        lcall   Inval_Param_
@@:
	jmp	exit

validate_dib:

;; validate the bitmap info header first. Validate the color table size too.

	push	si
	push	di
	mov	ax,word ptr _P_&lpInitInfo
	mov	cx,word ptr _P_&lpInitInfo+2
	mov	dx,_P_&wUsage
	mov	di, DIB_VALIDATE_COLOR + DIB_PTR_CLP

	call	ValidateDIBHeader
	or	ax,ax
	jz	@f
	pop	di
	pop	si
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
	jmp	exit
@@:

;; now validate the size of the bitsbuffer. Use complete height 

	mov	si, word ptr _P_&lpInitBits
	mov	di, word ptr _P_&lpInitBits+2
	les	bx,_P_&lpInitInfo
	mov	cx, DIB_FULL_DIB+DIB_PTR_CLP

	call	ValidateDIBSize
	pop	di
	pop	si
	or	ax,ax
	jz	exit
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
exit:
	endif
	endm
;----------------------------------------------------------------------------;

P_CLPBITBUFFER0 macro cx, cy, cPlanes, cBitsPixel, lpBits, opts
	P_int	<cx>,<opts>
	P_int	<cy>,<opts>
	P_int	<cPlanes>,<opts>
	P_int	<cBitsPixel>,<opts>
	P_CLPBYTE0  <lpBits>,<opts>
	endm

P_CLPETOBUF	macro	lpsz, cch, lpdx, opts
	P_CLPBUFFER0 <lpsz>,<cch>,<opts>
	P_CLPINT0 <lpdx>,<opts>
	endm

P_TEXTEXTEX	macro lpsz, cch, nMaxExt, lpnFit, lpDx, opts
	P_CLPBUFFER <lpsz>,<cch>,<opts>
	P_int	 <nMaxExt>,<opts>
	P_LPINT0 <lpnFit>,<opts>
	P_LPINT0 <lpDX>,<opts>
	endm
;
; GDI structures
;
_DefSimpleF F_LBCOLOR,4
_DefSimpleF F_CLPBITS,4
_DefSimpleF F_DWSIZE,4
_DefSimpleF F_COMPRESS,4
_DefSimpleF F_DIBSIZE0,4

_DefSimpleF F_HMF,2
_DefSimpleF F_VALUE,2
_DefSimpleF F_WMBZ,2
_DefSimpleF F_WSIZE,2
_DefSimpleF F_CONST,2
_DefSimpleF F_BITCOUNT,2
_DefSimpleF F_RVALUE,2
_DefSimpleF F_short,2
_DefSimpleF F_VERSION,2

_DefSimpleF F_PITCHFAMILY,1
_DefSimpleF F_BVALUE,1
_DefSimpleF F_BFLAGS,1

STRUCT <RGBQUAD>
F_BYTE	     rgbBlue
F_BYTE	     rgbGreen
F_BYTE	     rgbRed
F_BYTE	     rgbReserved
ENDSTRUCT

STRUCT <RGBTRIPLE>
F_BYTE	     rgbtBlue
F_BYTE	     rgbtGreen
F_BYTE	     rgbtRed
ENDSTRUCT

STRUCT <LOGBRUSH>
F_VALUE      lbStyle, BS_MAX
F_LBCOLOR    lbColor
F_VALUE      lbHatch, HS_MAX
ENDSTRUCT

_GenLP	<P_CLPLOGBRUSH>,<CLP>,%VLcbsLOGBRUSH
_GenLP	<P_CLPLOGBRUSH0>,<CLP0>,%VLcbsLOGBRUSH
_GenLP	<P_LPLOGBRUSH>,<LP>,%VLcbsLOGBRUSH
_GenLP	<P_LPLOGBRUSH0>,<LP0>,%VLcbsLOGBRUSH

STRUCT <LOGFONT>
F_int		 lfHeight
F_int		 lfWidth
F_int		 lfEscapement
F_int		 lfOrientation
F_VALUE 	 lfWeight, FW_MAX
F_BYTE		 lfItalic
F_BYTE		 lfUnderline
F_BYTE		 lfStrikeOut
F_BYTE		 lfCharSet
F_BVALUE	 lfOutPrecision, OUT_MAX
F_BVALUE	 lfClipPrecision, CLIP_MAX
F_BVALUE	 lfQuality, QUALITY_MAX
F_PITCHFAMILY	 lfPitchAndFamily
F_BYTE		 lfFaceName		 ;var-length field
ENDSTRUCT

_GenLP	<P_CLPLOGFONT>,<CLP>,%VLcbsLOGFONT
_GenLP	<P_CLPLOGFONT0>,<CLP0>,%VLcbsLOGFONT
_GenLP	<P_LPLOGFONT>,<LP>,%VLcbsLOGFONT
_GenLP	<P_LPLOGFONT0>,<LP0>,%VLcbsLOGFONT

STRUCT <LOGPEN>
F_VALUE      lopnStyle, PS_MAX
F_POINT      lopnWidth
F_DWORD      lopnColor
ENDSTRUCT

_GenLP	<P_CLPLOGPEN>,<CLP>,%VLcbsLOGPEN
_GenLP	<P_CLPLOGPEN0>,<CLP0>,%VLcbsLOGPEN
_GenLP	<P_LPLOGPEN>,<LP>,%VLcbsLOGPEN
_GenLP	<P_LPLOGPEN0>,<LP0>,%VLcbsLOGPEN

STRUCT <METAFILEPICT>
F_RVALUE     nMapMode, MM_MIN, MM_MAX
F_int	     xExt
F_int	     yExt
F_HMF	     hMF
ENDSTRUCT

_GenLP	<P_CLPMETAFILEPICT>,<CLP>,%VLcbsMETAFILEPICT
_GenLP	<P_CLPMETAFILEPICT0>,<CLP0>,%VLcbsMETAFILEPICT
_GenLP	<P_LPMETAFILEPICT>,<LP>,%VLcbsMETAFILEPICT
_GenLP	<P_LPMETAFILEPICT0>,<LP0>,%VLcbsMETAFILEPICT

STRUCT <TEXTMETRIC>	      ;currently used only for output
F_int	     tmHeight
F_int	     tmAscent
F_int	     tmDescent
F_int	     tmInternalLeading
F_int	     tmExternalLeading
F_int	     tmAveCharWidth
F_int	     tmMaxCharWidth
F_int	     tmWeight
F_BYTE	     tmItalic
F_BYTE	     tmUnderlined
F_BYTE	     tmStruckOut
F_BYTE	     tmFirstChar
F_BYTE	     tmLastChar
F_BYTE	     tmDefaultChar
F_BYTE	     tmBreakChar
F_BYTE	     tmPitchAndFamily
F_BYTE	     tmCharSet
F_int	     tmOverhang
F_int	     tmDigitizedAspectX
F_int	     tmDigitizedAspectY
ENDSTRUCT

_GenLP	<P_CLPTEXTMETRIC>,<CLP>,%VLcbsTEXTMETRIC
_GenLP	<P_CLPTEXTMETRIC0>,<CLP0>,%VLcbsTEXTMETRIC
_GenLP	<P_LPTEXTMETRIC>,<LP>,%VLcbsTEXTMETRIC
_GenLP	<P_LPTEXTMETRIC0>,<LP0>,%VLcbsTEXTMETRIC

; OutlineTextMetrics return buffer
;
P_LPETM0    macro cch, lpch, opts

	_DefParm    <cch>,2,<opts>
	_DefParm    <lpch>,4,<opts>

        if VLgen
	    _FlsFrame
	    mov     ax,_P_&lpch
	    mov     cx,_P_&lpch+2
	    mov     bx,_P_&cch
	    lcall   LP0
            _gensub LP
	endif
endm

; GetGlyphOutline return buffer.
;

P_LPGGO0 macro cch, lpch, opts

	_DefParm    <cch>,4,<opts>
	_DefParm    <lpch>,4,<opts>

        if VLgen
	    _FlsFrame

;; The buffer should be atleast of the given size.

	    ValidateHugeLP	_P_&cch, _P_&lpch, IsBadHugeWritePtr, NULL

        endif
        endm


; GetFontData return buffer
;

P_LPFDATA0 macro lpch, cch, opts

	_DefParm    <lpch>,4,<opts>
	_DefParm    <cch>,4,<opts>

        if VLgen
	    _FlsFrame

	    ValidateHugeLP	 _P_&cch, _P_&lpch, IsBadHugeWritePtr, NULL

        endif
        endm

;---------------------------------------------------------------------------;
; hugw pointer validation routine.


STRUCT <GLYPHMETRICS>	      ;only used for output
F_WORD	  gmBlackBoxX
F_WORD	  gmBlackBoxY
F_POINT   gmptGlyphOrigin
F_short   gmCellIncX
F_short   gmCellIncY
ENDSTRUCT

_GenLP	<P_CLPGLYPHMETRICS>,<CLP>,%VLcbsGLYPHMETRICS
_GenLP	<P_CLPGLYPHMETRICS0>,<CLP0>,%VLcbsGLYPHMETRICS
_GenLP	<P_LPGLYPHMETRICS>,<LP>,%VLcbsGLYPHMETRICS
_GenLP	<P_LPGLYPHMETRICS0>,<LP0>,%VLcbsGLYPHMETRICS

STRUCT METARECORD
F_DWORD   rdSize
F_WORD	  rdFunction
F_WORD	  rdParm	  ;var. length field
ENDSTRUCT

_GenLP	<P_CLPMETARECORD>,<CLP>,%VLcbsMETARECORD
_GenLP	<P_CLPMETARECORD>,<CLP0>,%VLcbsMETARECORD
_GenLP	<P_LPMETARECORD>,<LP>,%VLcbsMETARECORD
_GenLP	<P_LPMETARECORD>,<LP0>,%VLcbsMETARECORD

;-------------------------------
; special-case macro definitions


STRUCT <BITMAP>
F_intMBZ     bmType
F_int	     bmWidth
F_int	     bmHeight
F_int	     bmWidthBytes
F_BYTE	     bmPlanes
F_BYTE	     bmBitsPixel
F_CLPBITS    bmBits
ENDSTRUCT

P_CLPBITMAP   macro lp, opts
    _GenParm    <lp>,4,<opts>
    if VLgen
	mov	ax,_P_&lp
	mov	cx,_P_&lp+2
	mov	bx,VLcbsBITMAP
	lcall	CLP
        _gensub LP

	les	bx,_P_&lp		; Accept bmBits == NULL
	mov	ax,es:[bx]._F_bmBits
	mov	cx,es:[bx]._F_bmBits+2
	or	ax,cx
	jz	@F
	xor	ax,ax
	mov	al,es:[bx]._F_bmPlanes	  ;bmPlanes
	mul	word ptr es:[bx]._F_bmHeight
	mul	word ptr es:[bx]._F_bmWidthBytes
	xchg	ax,dx
	mov	ax,es:[bx]._F_bmBits
	mov	bx,dx			   ;bx = size
	lcall	CLP
        _gensub LP
    @@:
    endif
endm

STRUCT <BITMAPCOREHEADER>
F_DWSIZE     bcSize
F_WORD	     bcWidth
F_WORD	     bcHeight
F_CONST      bcPlanes, 1
F_BITCOUNT   bcBitCount
ENDSTRUCT

STRUCT <BITMAPINFOHEADER>
F_DWSIZE     biSize
F_WORD	     biWidthLo
F_WMBZ	     biWidthHi
F_WORD	     biHeightLo
F_WMBZ	     biHeightHi
F_CONST      biPlanes, 1
F_BITCOUNT   biBitCount
F_COMPRESS   biCompression
F_DIBSIZE0   biSizeImage
F_DWORD      biXPelsPerMeter
F_DWORD      biYPelsPerMeter
F_DWORD      biClrUsed
F_DWORD      biClrImportant
ENDSTRUCT
;----------------------------------------------------------------------------;
P_VALIDATEBITSINFOBUFFER macro fn, yE, xS, yS, nStart, n, lpBits, lpBi, wUse, rBits, rBi, opts
	local	exit
	local	total_clip

;; NOTE: The first 4 parameters are defined only when fn & DIB_RECT_DIB is 
;;       TRUE (they are 0 otherwise). 
;;       The 5th parameter is undefined if fn & DIB_FULL_DIB is TRUE.

;; yE     - yExtent in DIB (only when fn & DIB_RECT_DIB is TRUE)
;; xS     - xStart in DIB (only when fn & DIB_RECT_DIB is TRUE)
;; yS     - yStart in DIB (only when fn & DIB_RECT_DIB is TRUE)
;; nStart - start DIB scan (only when fn & DIB_RECT_DIB is TRUE)
;; 
;; n 	  - numScans parameter. If fn & DIB_FULL_DIB is TRUE, n is not defined.
;; lpBits - pointer to the bits
;; lpBi   - pointer to bitmap info
;; wUse   - the	wUsage parameter
;; rBits  - routine to validate length of lpBits buffer
;; rBi	  - routine to validate length of lpBi buffer.
;; opts   - optional parameters

    if fn and  DIB_RECT_DIB
	_DefParm 	<yE>,2,<opts>
	_DefParm 	<xS>,2,<opts>
	_DefParm 	<yS>,2,<opts>
	_DefParm 	<nStart>,2,<opts>
    endif

    if fn and  DIB_PART_DIB
    	_DefParm	<n>,2,<opts>
    endif

    	_DefParm	<lpBits>,4,<opts>
    	_DefParm	<lpBi>,4,<opts>
	_DefParm	<wUsage>,2,<opts>

    if VLgen
	_FlsFrame

;; validate wUsage

	mov	ax,_P_&wUsage
	cmp	ax,DIB_MAX
	jbe	@F		    ;; unsigned comparison to catch < 0.
        mov     bx,ERR_BAD_VALUE
        lcall   Inval_Param_
@@:


	push	si
	push	di

;; validate the bitmap info header first. Validate the color table size too.

	mov	ax,word ptr _P_&lpBi
	mov	cx,word ptr _P_&lpBi+2
	mov	dx,_P_&wUsage		             
	mov	di, DIB_VALIDATE_COLOR 
	or	di, rBi

	call ValidateDIBHeader
	or	ax,ax
	jz	@f
	pop	di
	pop	si
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
	jmp	exit
@@:

;; now validate the size of the bitsbuffer. 

	mov	si, word ptr _P_&lpBits
	mov	di, word ptr _P_&lpBits+2
	les	bx,_P_&lpBi

    if fn and DIB_PART_DIB

    	mov	dx,_P_&n

    endif

    if fn and DIB_RECT_DIB

;; for a call which specifies a rectangular area in the DIB (SetDIBitsToDevice),
;; compute the size of the DIB that will actually be validated.
;;
;; The cases are:
;;
;; (1) If (yS > (nStart + n) : The DIB RECT will be totally clipped. Do not
;;     validate the DIB size in this case.
;; (2) If (yS + yE) < nStart : The DIB rect will totally be clipped. Do not
;;      validate the DIB size in this case.
;; (3) Else, compute the min of (yS+yE-nStart) and (n) and use it to validate
;;     the size of the DIB buffer.
        
	mov	dx, _P_&yS
	mov	cx, _P_&nStart
	add	cx, _P_&n
	cmp	dx, cx
	ja	total_clip		;; case (1)
        add	dx, _P_&yE
	cmp	dx, _P_&nStart
	jb	total_clip		;; case (2)
	sub	dx, _P_&nStart
	cmp	dx, _P_&n		;; compute min in case (3)
        jb	@f			;; (yS+yE-nStart) is < n
	mov	dx, _P_&n		;; validate only n scans
	jmp	short @f

total_clip:
	pop	di
	pop	si			;; will not validate DIB size
	jmp	short exit

@@:
    endif     

	mov	cx, fn
	or	cx, rBits

	call	ValidateDIBSize
	pop	di
	pop	si
	or	ax,ax
	jz	exit
        mov     bx,ERR_BAD_PTR
        lcall   Inval_Param_
exit:


    endif
    endm

;----------------------------------------------------------------------------;

STRUCT <LOGPALETTE>			;fixed-size portion of struct.
F_VERSION      palVersion
F_WORD	       wEntries
ENDSTRUCT

P_CLPLOGPALETTE macro lp, opts
    _GenParm    <lp>,4,<opts>
    if VLgen
	mov	ax,_P_&lp
	mov	cx,_P_&lp+2
	mov	bx,VLcbsLOGPALETTE
	lcall	CLP
        _gensub LP

	les	bx,_P_&lp
	mov	cx,es

	mov	ax,VLcbsPALETTEENTRY
	mul	word ptr es:[bx]._F_wEntries	; ax = size of all palette entries
	add	ax,VLcbsLOGPALETTE		; ax = total size of struct
	xchg	ax,bx

	lcall	CLP
        _gensub LP
    endif
endm

STRUCT DEVMODE	    ;fixed-size fields
F_RGCH	     dmDeviceName, CCHDEVICENAME
F_VERSION    dmSpecVersion
F_WORD	     dmDriverVersion		     ;value assigned by driver developer
F_WSIZE      dmSize			     ;size of DEVMODE struct.
F_WORD	     dmDriverExtra		     ;size of dmDriverData field.
F_DWORD      dmFields
F_RVALUE     dmOrientation, DMORIENT_PORTRAIT, DMORIENT_LANDSCAPE
F_RVALUE     dmPaperSize, DMPAPER_FIRST, DMPAPER_LAST
F_short      dmPaperLength
F_short      dmPaperWidth
F_short      dmScale
F_short      dmCopies
F_RVALUE     dmDefaultSource, DMBIN_FIRST, DMBIN_LAST
F_RVALUE     dmPrintQuality, DMPRINT_FIRST, DMPRINT_LAST ;** range -4 to -1
F_RVALUE     dmColor, DMCOLOR_FIRST, DMCOLOR_LAST	 ;** range 1-2
F_RVALUE     dmDuplex, DMDUP_FIRST, DMDUP_LAST		 ;** range 1-3
ENDSTRUCT

P_CLPDEVMODE0 macro lp, opts
     local	dmexit
     local	dmbad
     local	dmbad1

    _GenParm    <lp>,4,<opts>
    if VLgen
	mov	ax,_P_&lp
	mov	cx,_P_&lp+2
	mov	bx,ax
	or	bx,cx
	jz	dmexit				;allow NULL pointer

	mov	bx,VLcbsDEVMODE
	lcall	CLP				;verify fixed-size fields
        _gensub LP

	les	bx,_P_&lp
	mov	ax,es:[bx]._F_dmDriverExtra
	or	ax,ax
	jz	dmexit				;if 0 extra bytes, we're done

	add	ax,VLcbsDEVMODE
	xchg	ax,bx				;bx=size of DEVMODE+extra bytes
	mov	cx,es

;; MICROGRAFIX draw uses CreateDC to load one of thier format conversion DLLs.
;; The pass in a DevMode structure which is either a private structure, or 
;; has a bogus value in the _F_dmDriverExtra field. We need to loosen the
;; validation and turn an invalid DevMode detection into a warning.

beg_fault_trap  dmbad
        mov     es,cx
        or      bx,bx           		; cb == 0?
        jz      dmexit				; yes: just check selector
        dec     bx
        add     bx,ax
        jc      dmbad1		     		; check 16 bit overflow
        mov     bl,es:[bx]      		; check read permission, limit
end_fault_trap
	jmp	short dmexit			; structure is valid

dmbad:
	fault_fix_stack
dmbad1:
        mov     bx,ERR_BAD_PTR or ERR_WARNING
	lcall	Inval_Param_

dmexit:
    endif
endm


;----------------------------------------------------------------------------;
;	P A R A M E T E R    V A L I D A T I O N   R O U T I N E S	     ;
;----------------------------------------------------------------------------;

; DIB validation flag constants. Do not change these constants without 
; changing them in GDI.API.

DIB_RGB_COLORS		equ	0 
DIB_VALIDATE_COLOR	equ	1
DIB_VALIDATE_RW		equ	2
DIB_PTR0		equ	4
DIB_FULL_DIB		equ	8
DIB_FULL_COLOR		equ	16
DIB_RECT_DIB		equ	32
DIB_PART_DIB		equ	64

; derived DIB flag constants

DIB_PTR_CLP		equ	0
DIB_NO_COLOR		equ	0
DIB_PTR_LP		equ	DIB_VALIDATE_RW
DIB_PTR_CLP0		equ	DIB_PTR0
DIB_PTR_LP0		equ	DIB_VALIDATE_RW+DIB_PTR0
ERR_BAD_PTR		equ 	07007h
DIB_DIBTODEV		equ	DIB_PART_DIB+DIB_RECT_DIB
DIB_PTR_GETDIBITS	equ	DIB_VALIDATE_RW+DIB_FULL_COLOR
NO_COLOR_TABLE		equ	9

BITMAP struc
        bmType         DW ?
        bmWidth        DW ?
        bmHeight       DW ?
        bmWidthBytes   DW ?
        bmPlanes       DB ?
        bmBitsPixel    DB ?
        bmBits         DD ?
BITMAP ends

RGBTRIPLE	struc
	rgbBlue		db ?
	rgbGreen	db ?
	rgbRed		db ?
RGBTRIPLE	ends

RGBQUAD         struc
        rgbqBlue        db ?
        rgbqGreen       db ?
        rgbqRed         db ?
        rgbqReserved    db ?
RGBQUAD         ends

; structures for defining DIBs
BITMAPCOREHEADER struc
        bcSize      dd ?
        bcWidth     dw ?
        bcHeight    dw ?
        bcPlanes    dw ?
        bcBitCount  dw ?
BITMAPCOREHEADER ends

BITMAPINFOHEADER struc
        biSize           dd ?
        biWidth          dd ?
        biHeight         dd ?
        biPlanes         dw ?
        biBitCount       dw ?

        biCompression    dd ?
        biSizeImage      dd ?
        biXPelsPerMeter  dd ?
        biYPelsPerMeter  dd ?
        biClrUsed        dd ?
        biClrImportant   dd ?
BITMAPINFOHEADER ends

BITMAPINFO  struc
    bmiHeader   db (SIZE BITMAPINFOHEADER) DUP (?)
    bmiColors   db ?            ; array of RGBQUADs
BITMAPINFO  ends

BITMAPCOREINFO  struc
    bmciHeader  db (SIZE BITMAPCOREHEADER) DUP (?)
    bmciColors  db ?            ; array of RGBTRIPLEs
BITMAPCOREINFO  ends

BITMAPFILEHEADER struc
    bfType          dw ?
    bfSize          dd ?
    bfReserved1     dw ?
    bfReserved2     dw ?
    bfOffBits       dd ?
BITMAPFILEHEADER ends

externFP   IsBadReadPtr        ;(KERNEL)
externFP   IsBadWritePtr       ;(KERNEL)
externFP   IsBadHugeReadPtr    ;(KERNEL)
externFP   IsBadHugeWritePtr   ;(KERNEL)

;createseg _TEXT,TEXT,BYTE,PUBLIC,CODE
createseg _TEXT,TEXT,WORD,PUBLIC,CODE
sBegin TEXT
;----------------------------------------------------------------------------;
; ValidateDIBHeader:							     ;
;									     ;
; This routine validates the DIB header:				     ;
;									     ;
; Entry:								     ;
;	CX:AX -- pointer to DIB header (either core or info header)	     ;
;	DX:   -- wUsage parameter					     ;
;	DI:   -- Flags:							     ;
;		 BIT0 - (DIB_VALIDATE_COLOR) set if no color table validatio ;
;			to be done.	                                     ;
;		 BIT1 - (DIB_VALIDATE_RW) set if R-W validation to be done.  ;
;		 BIT2 _ (DIB_PTR0)        set if NULL pointer OK             ;
;		 BIT3 _ (DIB_FULL_DIB)    set if complete DIB (not used here);
;		 BIT4 - (DIB_FULL_COLOR)  ignore biClrUsed if set.	     ;
; Returns:								     ;
;	AX = 0 if valid header.						     ;
; 	DI:SI: will point just past the end of the buffer.		     ;
;									     ;
; Uses:									     ;
;	Free to use AX,BX,CX,DX,SI,DI and ES.				     ;
;									     ;
;----------------------------------------------------------------------------;

public	ValidateDIBHeader
ValidateDIBHeader proc near


; the header must atleast be the size of COREHEADER.

	mov	bx,SIZE BitmapCoreHeader
	push	cx
	push	ax			;save the pointer to header
	call	DIB_Validate_Pointer	;is it a valid pointer ?
	or	ax,ax
	pop	ax
	pop	cx			;restore pointer
	jz	VDH_cont		;base size ok
	jmp	VDH_bad_header		;invalid size

VDH_cont:

; now it is safe to load the pointer to the header and validate the actual
; size.

	mov	es,cx
	mov	bx,ax				;es:bx -> dib header
	mov	si,word ptr es:[bx].biSize	;load and keep the size
	mov	cx, SIZE RGBTriple	 	;assume  COREHEADER.
	cmp	si,SIZE BitmapCoreHeader 	;COREHEADER ?
	jz	VDH_core			;it is a core header
	mov	cx, SIZE RGBQuad	 	;assume  INFOHEADER
	cmp	si, SIZE BitmapInfoHeader	;is it an info header ?
	jnz	VDH_bad_header			;header is not right.

; we have a new header. Make sure that some of the fields that the code
; expects to be 0 are 0.

    cmp word ptr es:[bx].biWidth+2,0
    jne VDH_bad_header                      ;invalid
    mov     ax,word ptr es:[bx].biHeight+2
    test    ax,ax                           ;is it a negative number ?
    js      VDH_get_bit_count               ;yes, must be a top-down dib.
    jnz     VDH_bad_header                  ;it it is not signed, it should be 0.

VDH_get_bit_count:
	cmp	es:[bx].biPlanes,1
	jne	VDH_bad_header			;no.
	mov	ax,es:[bx].biBitCount		;load the bits per pel
	jmp	short VDH_check_color		;validate color

VDH_core:
	cmp	es:[bx].bcPlanes,1
	jne	VDH_bad_header			;no.
	mov	ax,es:[bx].bcBitCount		;load the bits per pel

VDH_check_color:	      

; if the bits per pel is >= NO_COLOR_TABLE, we do not have a color table in 
; the DIB.

	cmp	ax,NO_COLOR_TABLE
	jae	VDH_no_color_table

; if color table validation is not needed, we can return if the header is 
; a core header (we have validated size) or validate the size of the 
; basic header and return.

	test	di, DIB_VALIDATE_COLOR		;color validation needed ?
	jnz	VDH_validate_color		;yes.

VDH_no_color_table:

; color table validation is not needed. We are done if this is a core header.

	cmp	si, SIZE BitmapCoreHeader	;core header ?
	jz	VDH_return_OK			;is, validation done. valid.
	mov	ax,bx				;get offset 
	mov	bx,si				;get base header size
	jmp	short VDH_validate_size		;validate the total size

VDH_bad_header:

	mov	ax,1				;return from here with error
	jmp	short VDH_return		;error return


VDH_validate_color:
	cmp	dx,DIB_RGB_COLORS		;is the usage RGB values
	jz	VDH_color_entry_size_in_cx	;cx has size of each entry
	mov	cx,2				;size per entry for palettes

VDH_color_entry_size_in_cx:
	mov	dx,ax				;get the bit count in dx

; if DIB_FULL_COLOR bit is set, we will ignore the value if biClrUsed.

	test	di,DIB_FULL_COLOR		;validate complete color table ?
	jnz	VDH_get_num_colors		;yes.

; check out the biClrUsed value.

	cmp	si, SIZE BitmapInfoHeader	;is this an info header ?
	jnz	VDH_get_num_colors		;no.
	mov	ax,word ptr es:[bx].biClrUsed  	;is this specified ?
	or	ax,ax
	jnz	VDH_num_colors_got		;yes. ax has num colors

VDH_get_num_colors:
	xchg	dx,cx
	mov	ax,1
	shl	ax,cl				;number of color entries in ax
	xchg	dx,cx

VDH_num_colors_got:
	mul	cx				;cx had size of each entry
	add	ax,si				;add size of header
	xchg	ax,bx				;size in bx, offset in ax

VDH_validate_size:
	mov	cx,es				;cx:ax has ptr, bx has size

; store the pointer past the header in DI:SI 

	mov	di,cx
	mov	si,ax
	add	si,bx				;past the end. Assume no wrap
	call	DIB_Validate_Pointer		;validate pointer 
	jmp	short VDH_return		;ax has status

VDH_return_OK:
	xor	ax,ax				;valid return

VDH_return:
	ret

ValidateDIBHeader endp


;----------------------------------------------------------------------------;
; ValidateDIBSize:							     ;
;									     ;
; Validates the size of the DIB bits.					     ;
;									     ;
; Entry:								     ;
;	DI:SI -- pointer to DIB bits (either core or info header)	     ;
;	ES:BX -- pointer to DIB header (already validated)		     ;
;	DX:   -- num scans. 						     ;
;	CX:   -- Flags:							     ;
;		 BIT1 - (DIB_VALIDATE_RW) set if R-W validation to be done.  ;
;		 BIT2 _ (DIB_PTR0)        set if NULL pointer OK             ;
;		 BIT3 - (DIB_FULL_DIB) set if full DIB bit size to be        ;
;		        validated.					     ;
; Returns:								     ;
;	AX = 0 if valid header.						     ;
;									     ;
; Uses:									     ;
;	Free to use AX,BX,CX,DX,SI,DI and ES.				     ;
;									     ;
; Assumes:								     ;
;      Caller has done a PUSH SI/PUSH DI on the frame.                       ;
;----------------------------------------------------------------------------;
public ValidateDIBSize
ValidateDIBSize proc near

	push	cx				;save
	cmp	word ptr es:[bx].biSize, SIZE BitmapInfoHeader
	jz	VDB_info			;info header
	mov	cx,es:[bx].bcBitCount		;get the bit count
	mov	ax,es:[bx].bcWidth		;and width in pels
	jmp	short VDB_get_scan_size		;calculate scan size

VDB_info:
	cmp	word ptr es:[bx].biCompression+2,0
	jnz	VDB_check_size_image
	cmp	word ptr es:[bx].biCompression, BI_RGB
	jz	VDB_not_rle			;not an RLE DIB

VDB_check_size_image:
	mov	ax,word ptr es:[bx].biSizeImage
	mov	cx,ax
	or	cx,word ptr es:[bx].biSizeImage+2
	jz	VDB_unknown_size		;unknown size
	pop	cx				;restore saved cx
	mov	dx,word ptr es:[bx].biSizeImage+2
	jmp	short VDB_validate_size		;size is in dx:ax

VDB_unknown_size:
	mov	ax,1				;validate for 1byte
	cwd
	pop	cx				;restore flags
	jmp	short VDB_validate_size		

VDB_not_rle:
; calculate the size of the scan. Assume that the width is a word

	mov	cx,es:[bx].biBitCount
	mov	ax,word ptr es:[bx].biWidth

VDB_get_scan_size:

	push	dx				;save
	mul	cx				;dx:ax = num of bits
	add	ax,31
	adc	dx,0
	and	ax, NOT 31			;round up to multiple of 32
	ror	dx,3				;get ls 3 bits into upper byte
	and	dh,0e0h				;keep the ms 3 bits
	shr	ax,3				;ignore ls 3 bits
	or	ah,dh				;ax = num bytes per scan
	pop	dx

VDB_scan_width_in_ax:

	pop	cx				;restore flags
	xchg	cx,dx				;get flags into dx, scan in cx

 	push	di				;save
 	mov	di,word ptr es:[bx].bcHeight	;assume core header
	cmp	word ptr es:[bx].biSize, SIZE BitmapCoreHeader
 	jz	VDB_total_scans_in_di		;di has total height of DIB
 	mov	di,word ptr es:[bx].biHeight	;get low word of height

VDB_total_scans_in_di:
	mov	bx,di				;get total height in BX
	pop	di				;restore
	test	dx,DIB_FULL_DIB			;is full DIB to be validated ?
	jnz	VDB_num_scans_in_bx		;yes, bx has num scans.

; when we are validating partial DIBs, we want to make sure that the
; numScan parameter passed in (now in cx) is not greater than the total
; height. If it is, we will simply validate for the full DIB.

	cmp	cx,bx				;is numScan > total scans ?
	ja	VDB_num_scans_in_bx		;yes, invalid numScans. Use total scans
	mov	bx,cx				;use numScans

VDB_num_scans_in_bx:
	push	dx				;save flags
	mul	bx				;dx:ax has size
	pop	cx				;get the flags in cx

VDB_validate_size:

; dx:ax has size of the buffer.	di:si is the ptr, cx has flags.

	call	DIB_Validate_Huge_Pointer
	ret

ValidateDIBSize endp


;----------------------------------------------------------------------------;
; DIB_Validate_Pointer:							     ;
;									     ;
; Validates the size and access of a pointer.				     ;
;									     ;
; Entry:								     ;
;	CX:AX	-- pointer to be validate				     ;
;	BX:	-- size of buffer					     ;
;	DI:	-- flags:						     ;
;		 BIT1 - (DIB_VALIDATE_RW) set if R-W validation to be done.  ;
;		 BIT2 _ (DIB_PTR0)        set if NULL pointer OK             ;
;									     ;
; Uses: None								     ;	
;       returns AX = 0 if valid.					     ;
; 									     ;
;----------------------------------------------------------------------------;

public	DIB_Validate_Pointer
DIB_Validate_Pointer proc near

	test	di,DIB_PTR0		;NULL pointer allowed ?
	jz	DBP_not_null		;no.
	push	ax			;save
	or	ax,cx			;is the pointer NULL ?
	pop	ax			;restore
	jz	DBP_return_ok		;pointer is NULL and is valid

DBP_not_null:

	push	cx
	push	ax
	push	bx
	test	di, DIB_VALIDATE_RW	;read/write validation ?
	jnz	DBP_rw_validation	;yes.

; do read only validation:

    call    IsBadReadPtr
	jmp	short DBP_return

DBP_rw_validation:
    call    IsBadWritePtr
	jmp	short DBP_return

DBP_return_ok:
	xor	ax,ax			;valid pointer

DBP_return:
	ret

DIB_Validate_Pointer endp


;----------------------------------------------------------------------------;
; DIB_Validate_Huge_Pointer:  						     ;
;									     ;
; Validates the size and access of a pointer.				     ;
;									     ;
; Entry:								     ;
;	DI:SI	-- pointer to be validate				     ;
;	DX:AX	-- size of buffer					     ;
;	CX:	-- flags:						     ;
;		 BIT1 - (DIB_VALIDATE_RW) set if R-W validation to be done.  ;
;		 BIT2 _ (DIB_PTR0)        set if NULL pointer OK             ;
;									     ;
; Uses: None								     ;	
;       returns AX = 0 if valid.					     ;
; 									     ;
;----------------------------------------------------------------------------;

public	DIB_Validate_Huge_Pointer
DIB_Validate_Huge_Pointer proc near

	test	cx,DIB_PTR0		;NULL pointer allowed ?
	jz	DBPH_not_null		;no.
	push	si			;save
	or	si,di			;is the pointer NULL ?
	pop	si			;restore
	jz	DBPH_return_ok		;pointer is NULL and is valid

DBPH_not_null:

	push	di
	push	si			;ds:si is pointer to bits
	push	dx
	push	ax			;dx:ax is the dword size
	test	cx, DIB_VALIDATE_RW	;read/write validation ?
	jnz	DBPH_rw_validation	;yes.

; do read only validation:

    call    IsBadHugeReadPtr
	jmp	short DBPH_return

DBPH_rw_validation:

    call    IsBadHugeWritePtr
	jmp	short DBPH_return

DBPH_return_ok:
	xor	ax,ax			;valid pointer

DBPH_return:
	ret

DIB_Validate_Huge_Pointer endp

sEnd	TEXT

;=======================================================================
;
; API Descriptions
;
; in PALETTE.ASM
API void,   AnimatePalette, TEXT, <ASM>
P_HPALETTE  hPal			  ; validated by VALID? (3.0 and 3.1)
P_WORD	    wStartIndex
P_CLPPALENTRYBUFFER nEntries,lpPalColors  ; **

; in PALETTE.ASM
API HPALETTE, CreatePalette, TEXT, <ASM>
P_CLPLOGPALETTE lpLogPal		       ;**

; in PALETTE.ASM
API WORD,   GetPaletteEntries, TEXT, <ASM>
P_HPALETTE  hPalette			   ;validated by VALID? (3.0 and 3.1)
P_WORD	    wStartIndex
P_LPPALENTRYBUFFER wEntries, lpPalColors	    ; buffer filled in DEBUG Win 3.1

; in PALETTE.ASM
API WORD,   GetNearestPaletteIndex, TEXT, <ASM>
P_HPALETTE  hPalette			   ;validated by VALID? (3.0 and 3.1)
P_DWORD     color

; in PALETTE.ASM
API WORD,   GetSystemPaletteEntries, TEXT, <ASM>
P_HDC	    hdc 				;validated by VALID? (3.0 and 3.1)
P_WORD	    wStartIndex
P_LPPALENTRYBUFFER wEntries,lpPalColors 	    ;buffer filled in DEBUG Win 3.1

; in PALETTE.ASM
API WORD,   GetSystemPaletteUse, TEXT, <ASM>
P_HDC	    hdc 				;validated by VALID? (3.0 and 3.1)

; in PALETTE.ASM
API BOOL,   ResizePalette, TEXT, <ASM>
P_HPALETTE  hPalette		     ;validated by VALID? (3.0 and 3.1)
P_WORD	    nNumEntries

; in PALETTE.ASM
API WORD,   SetPaletteEntries, TEXT, <ASM>
P_HPALETTE  hPalette			   ;validated by VALID? (3.0 and 3.1)
P_WORD	    wStartIndex
P_CLPPALENTRYBUFFER wEntries, lpPalColors

; in PALETTE.ASM
API WORD,   SetSystemPaletteUse, TEXT, <ASM>
P_HDC	    hdc 				;validated by VALID? (3.0 and 3.1)
P_WORD	    wUsage

; in PALETTE.ASM
API int,    UpdateColors, TEXT, <ASM>
P_HDCMETA   hdc 				;validated by VALID? (3.0 and 3.1)

; in PRNTCTL.C (new for Win 3.1)
API int,    AbortDoc, TEXT
P_HDCMETA   hdc 		      ; validated by Valid()
APIERR
    mov     ax, SP_ERROR	      ;General escape error
APIEND

; in PRNTCTL.C	(New for Win 3.1)
API int,    EndPage, TEXT
P_HDCMETA   hdc 				  ; Checked by Valid(). Encapsulates ENDPAGE escape
APIERR
    mov     ax, SP_ERROR	      ;General escape error
APIEND

; in PRNTCTL.C	(New for Win 3.1)
API int,    EndDoc, TEXT
P_HDCMETA   hdc 				  ; Checked by Valid(). Encapsulates NEWFRAME escape
APIERR
    mov     ax, SP_ERROR	      ;General escape error
APIEND

STRUCT	<DOCINFO>
F_int	cbSize
F_CLPSTR lpszDocName
F_CLPSTR0 lpszOutput
ENDSTRUCT

_GenLP	<P_CLPDOCINFO>,<CLP>,%VLcbsDOCINFO

; in PRNTCTL.C (new for 3.1)
API int,    StartDoc, TEXT
P_HDCMETA   hdc 		   ;checked by Valid()
P_CLPDOCINFO lpDocInfo
APIERR
    mov     ax, SP_ERROR	   ;General escape error
APIEND

; in PRNTCTL.C (new for 3.1)
API int,    StartPage, TEXT
P_HDCMETA   hdc 		   ;checked by Valid(). Null error return

; in PRNTCTL.C	(new for 3.1)
API int,    SetAbortProc, TEXT
P_HDCMETA   hdc
P_LPFNABORT0 lpProc		       ;**
APIERR
    mov     ax, SP_ERROR	      ;General escape error
APIEND

; in DCMAN1.ASM
API HDC,    CreateCompatibleDC, TEXT, <ASM>
P_HDC0	    hdc 		       ; 0 => use screen DC

; in DCMAN1.ASM
API HDC,    CreateIC ,TEXT, <ASM,FUNNYFRAME,NODATA> ;nogen
P_CLPSTR    lpDriverName
P_CLPSTR0   lpDeviceName
P_CLPSTR0   lpOutput
P_DWORD     lpInitData		  ; Driver-dependent data or NULL
APIEND


; in DCMAN1.ASM
API HDC,    CreateDC, TEXT, <ASM,FUNNYFRAME,NODATA> ;nogen
;
; START of special ATM hackery.
;
	jmp	short SkipATMHackery
;
; Addresses of certain kernel functions patched by ATM loader.
;
;ATM_LPFN    CreateDC_lpfn, LoadLibrary
;ATM_LPFN    CreateDC_lpfn, GetProcAddress
;ATM_LPFN    CreateDC_lpfn, FreeLibrary
;
; InternalCreateDC() hook that gets patched by ATM
;
;public	ATMInternalCreateDC
;ATMInternalCreateDC:
;
; Old Windows prolog code that will be properly
; recognized by the ATM installation code...
;
;	mov	ax,_DATA
;	inc	bp
;	push	bp
;	mov	bp,sp
;	push	ds		    ; push ds and pop it off.
;	pop	ds		    ; (we need to pop DS rather than
;				    ;  something fast like pop AX because
;				    ; ATM doesn't preserve DS itself)
;	pop	bp		    ; Take down the frame completely.
;	dec	bp
;ExternNP	InternalCreateDC    ; (in dcman1.asm)
;	jmp	InternalCreateDC    ; now go to the real code
SkipATMHackery:
;
; END of special ATM hackery
;
P_CLPSTR    lpDriverName
P_CLPSTR0   lpDeviceName	  ; can be NULL if lpDriverName is "DISPLAY"
P_CLPSTR0   lpOutput		  ; can be NULL if lpDriverName is "DISPLAY"
P_CLPDEVMODE0  lpInitData	; ** points to DEVMODE struct.

; in DCMAN2.ASM
API BOOL,   DeleteDC, TEXT, <ASM,ATMFRAMEDS>
P_HDC	    hdc 		       ; Validated by VALIDDEBUG? (3.1), VALID? (3.0)
APIEND
ATM_LPFN    DeleteDC_lpfn, FreeLibrary

; in DCMAN2.ASM
API BOOL,   RestoreDC, TEXT, <ASM>
P_HDCMETA   hdc
P_int	    level		 ;number of DC on context stack or -1

; in DCMAN2.ASM
API int,    SaveDC, TEXT, <ASM>
P_HDCMETA   hdc 			 ; validated by VALID? (3.0 and 3.1)

; in RESETDC.C
API BOOL,   RESETDC, TEXT
P_HDC	    hdc
P_CLPDEVMODE0  lpInitData	; ** points to DEVMODE struct.

; in OBJDEL.ASM
API BOOL,   DeleteObject, TEXT, <ASM>
P_HGDIOBJ   hObject		      ; ** Validated by VALID? (3.0 and 3.1)
				    ; object shouldn't be selected into a DC
				    ; Pens, brushes, fonts, bitmaps &
				    ; palettes and regions.
; in OBJMAN.ASM
API HPEN,   CreatePen, TEXT, <ASM>
P_VALUE     style, PS_MAX		  ; ** range 0-6
P_int	    cx
P_COLORREF  color			 ; ** DWORD

; in OBJMAN.ASM
API HPEN,   CreatePenIndirect, TEXT, <ASM>
P_CLPLOGPEN lpLogPen			  ; **

; in OBJMAN.ASM
API HBRUSH, CreateSolidBrush, TEXT, <ASM, NOGEN>
P_COLORREF  color

; in OBJMAN.ASM
API HBRUSH, CreateHatchBrush, TEXT, <ASM>
P_VALUE nIndex, HS_MAX			  ; ** range 0-5
P_COLORREF  color			 ;

; in OBJMAN.ASM
API HBRUSH, CreatePatternBrush, TEXT, <ASM>
P_HBITMAP   hBitmap				;

; in OBJMAN.ASM
API HBRUSH, CreateBrushIndirect, TEXT, <ASM>
P_CLPLOGBRUSH lpLogBrush		      ; **

; in OBJMAN.ASM
API HBITMAP, CreateBitmap, TEXT, <ASM>	      ;<FUNNYFRAME> in 3.0
P_CLPBITBUFFER0 cx, cy, bPlanes, bBitC, lpBits ; ** buffer size
					;determined by bitmap attributes
					;cx and cy are int. values
					;bPlanes and bBitC are BYTE values

; in OBJMAN.ASM
API HBITMAP, CreateBitmapIndirect, TEXT, <ASM> ;<FUNNYFRAME> in 3.0
P_CLPBITMAP lpBitmap			       ; **

; in  OBJMAN.ASM
API HBITMAP, CreateCompatibleBitmap, TEXT, <ASM, FUNNYFRAME,NODATA> ;nogen
P_HDC	    hdc 			       ; validated by VALID? (3.0 and 3.1) in CompatibleBitmap
P_int	    cx
P_int	    cy

; in  OBJMAN.ASM
API HBITMAP, CreateDiscardableBitmap, TEXT, <ASM,FUNNYFRAME,NODATA> ;nogen
P_HDC	    hdc 			       ; validated by VALID? (3.0 and 3.1) in CompatibleBitmap
P_int	    cx
P_int	    cy

; in OBJMAN.ASM
API HFONT,  CreateFont, TEXT, <ASM>
P_int	    cy
P_int	    cx
P_int	    nEscapement
P_int	    nOrientation
P_VALUE     nWeight, FW_MAX		;** range 0-1000
P_BYTE	    cItalic
P_BYTE	    cUnderline
P_BYTE	    cStrikeOut
P_BYTE	    cCharSet
P_BVALUE    cOutPrecis, OUT_MAX     ;** range 0-3
P_BVALUE    cClipPrecis, CLIP_MAX   ;** range 0-2
P_BVALUE    cQuality, QUALITY_MAX   ;** range 0-2
P_PITCHFAMILY cPitchAndFamily	    ;** BYTE. Flags in upper and lower nibbles
P_CLPFACENAME0 lpFaceName	    ;** null-terminated string length
				    ;not > LF_FACESIZE

; in OBJMAN.ASM
API HFONT,  CreateFontIndirect, TEXT, <ASM>
P_CLPLOGFONT lpLogFont			      ;**

; in OBJMAN.ASM
API HBRUSH, CreateDIBPatternBrush, TEXT, <ASM>
P_GHPACKEDDIB  hPackedDIB, wUsage

; in OBJMAN.ASM
API DWORD,  SetBitmapDimension, TEXT, <ASM>
P_HBITMAP   hBitmap		  ; validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in FONTASC.ASM
ifdef DBCS
API int, GetFontAssocStatus, TEXT, <ASM>
P_HDCMETA   hdc                           ; validated by VALID?		
endif ;DBCS

; in WIN32.C
API BOOL,   SetBitmapDimensionEx, TEXT
P_HBITMAP   hBitmap
P_int	    x
P_int	    y
P_LPSIZE0   lpSize

; in OBJMAN.ASM
API DWORD,  GetBitmapDimension, TEXT, <ASM>
P_HBITMAP   hBitmap			   ;validated by VALID? (3.0 and 3.1)

; in WIN32.C
API BOOL,   GetBitmapDimensionEx, TEXT
P_HBITMAP   hBitmap
P_LPSIZE    lpDimension

; in OBJMAN.ASM
API int,    SetTextJustification, TEXT, <ASM>
P_HDCMETA   hdc 		   ;validated by VALID? (3.0 and 3.1)
P_int	    nBreakExtra
P_int	    nBreakCount

; in OBJMAN.ASM
API int,    SetTextCharacterExtra, TEXT, <ASM>
P_HDCMETA   hdc 		   ;validated by VALID? (3.0 and 3.1)
P_int	    nCharExtra

; in METAREC.C
API GHANDLE, CopyMetaFile, TEXT
P_GHANDLE   hMeta				;checked by IsValidMetaFile()
P_CLPSTR0   lpFileName				;0 => use memory metafile

; in METAREC.C
API HDC, CreateMetaFile, TEXT
P_CLPSTR0   lpFileName				 ;0 => return memory metafile DC

; in METAREC.C
API GHANDLE, CloseMetaFile, TEXT
P_HDCMETA   hdc


; in METAPLAY.ASM
API BOOL,   DeleteMetaFile, TEXT, <ASM,FUNNYFRAME> ; is NODATA
P_HMETAFILE hMF

; in METAPLAY.ASM
API BOOL,   PlayMetaFile, TEXT, <ASM, ATMFRAMEDS>
P_HDCMETA   hdc 		  ;validated by Valid() (3.1 only)
P_HMETAFILE hMF

; in METAPLAY.ASM
API GHANDLE, GetMetaFile, TEXT, <ASM>
P_CLPSTR    lpFileName


; in META.C
API void,   PlayMetaFileRecord, TEXT
P_HDCMETA   hdc 		  ;validated by Valid() (3.1 only)
P_LPHANDLETABLE0 lpHT
P_CLPMETARECORD lpMR
P_WORD	    nhandles

; in META.C
API BOOL,   EnumMetaFile, TEXT
P_HDCMETA0  hdc 			 ; NULL DC is OK. Checked by Valid() (3.0 and 3.1)
P_HMETAFILE hMF
P_LPFNMENUM lpfnEnum			 ; **
P_DWORD     lpClientData		      ; CLPVOID0 ?, but often just contains data

; in METAREC.C
API GHANDLE, GetMetaFileBits, TEXT
P_HMETAFILE hMF

; in METAREC.C
API HANDLE, SetMetaFileBits, TEXT
P_HMETAFILE hMem			  ; just returns hMem

; in METAREC.C
API HANDLE, SetMetaFileBitsBetter, TEXT
P_HMETAFILE hMem			  ; just returns hMem, new for 3.1

; in XLATE.ASM
API BOOL,   DPtoLP, TEXT, <ASM, FUNNYFRAME,NODATA>  ;nogen
P_HDC	    hdc 				 ;validated by VALID? (3.0 and 3.1) by DPXlate
P_LPPOINTBUFFER lpPoints, nCount	   ;**

; in XLATE.ASM
API BOOL,   LPtoDP, TEXT, <ASM, FUNNYFRAME,NODATA> ;nogen
P_HDC	    hdc 				;validated by VALID? (3.0 and 3.1) in DPXlate
P_LPPOINTBUFFER lpPoints, nCount

; in ARC.ASM
API HRGN,   CreateEllipticRgnIndirect, TEXT, <ASM>
P_CLPRECT   lpRect

; in ARC.ASM
API HRGN,   CreateEllipticRgn, TEXT, <ASM, NOGEN>
P_XY1XY2    x1,y1,x2,y2 		     ;X2-X1 and Y2-Y1 under 32,767 units

; in ARC.ASM
API HRGN,   CreatePolygonRgn, TEXT, <ASM>
P_CLPPOINTBUFFER lpPoints, nCount	       ;**
P_RVALUE    nPolyFillMode, PFILL_MIN, PFILL_MAX   ;** range 1-2

; in ARC.ASM
API HRGN,   CreatePolyPolygonRgn, TEXT, <ASM>
P_POLYPOLYPOINTS lpPoints, lpPolyCounts, nCount ;**lpPolyCounts is a buffer
						;of nCount Integers. lpPoints
						;is a buffer of POINTS. Size of
						;lpPoints det. by sum of all
						;integers in lpPolyCounts
P_RVALUE    nPolyFillMode, PFILL_MIN, PFILL_MAX    ;** range 1-2

; in ARC.ASM
API HRGN,   CreateRoundRectRgn, TEXT, <ASM, NOGEN>
P_XY1XY2    x1,y1,x2,y2 		     ;X2-X1 and Y2-Y1 under 32,767 units
P_int	    x3
P_int	    y3

; in ARC.ASM
API BOOL, Ellipse, TEXT, <ASM>
P_HDCNOIC   hdc 				 ;validated by VALID? (3.0 and 3.1)
P_XY1XY2    x1,y1,x2,y2

; in ARC.ASM
API BOOL,   Arc, TEXT, <ASM>
P_HDCNOIC   hdc 		     ; validated by VALID? (3.0 and 3.1)
P_XY1XY2    x1,y1,x2,y2
P_int	    x3
P_int	    y3
P_int	    x4
P_int	    y4

; in ARC.ASM
API BOOL,   Pie, TEXT, <ASM>
P_HDCNOIC   hdc 		      ;validated by VALID? (3.0 and 3.1)
P_XY1XY2    x1,y1,x2,y2
P_int	    x3
P_int	    y3
P_int	    x4
P_int	    y4

; in ARC.ASM
API BOOL,   Chord, TEXT, <ASM>
P_HDCNOIC   hdc 		      ; validated by VALID? (3.0 and 3.1)
P_XY1XY2    x1,y1,x2,y2       ; ** X2-X1 and Y2-Y1 under 32,767 units
P_int	    x3
P_int	    y3
P_int	    x4
P_int	    y4

; in ARC.ASM
API BOOL,   RoundRect, TEXT, <ASM>
P_HDCNOIC   hdc 		      ;validated by VALID? (3.0 and 3.1)
P_XY1XY2    x1,y1,x2,y2
P_int	    x3
P_int	    y3

; in RECT.C
API BOOL,   Rectangle, TEXT, <RECT>
P_HDCNOIC   hdc 		      ;validated by Valid() (3.0 and 3.1) in RectangleBody
P_XY1XY2    x1,y1,x2,y2

; in FLOOD.ASM
API BOOL,   FloodFill, TEXT, <ASM> ; calls ExtFloodFill
P_HDCNOIC   hdc
P_int	    x
P_int	    y
P_COLORREF  color

; in FLOOD.ASM
API BOOL,   ExtFloodFill, TEXT, <ASM>
P_HDCNOIC   hdc 				;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y
P_COLORREF  color
P_UVALUE    fillType, EFF_MAX		    ;** range 0-1

P_LPESCPARMS macro  code, cb, lp, opts
    _DefParm	<code>,2,<opts>
    _DefParm	<cb>,2,<opts>
    _DefParm	<lp>,4,<opts>
    if VLgen
	_FlsFrame
	mov	ax,_P_&lp
	mov	cx,_P_&lp+2
	mov	bx,_P_&cb
	lcall	CLP0
        _gensub LP
    endif
endm

; in ESC.ASM
API int,    Escape, TEXT, <ASM, ATMFRAMEDS>
P_HDCNOTMEM hdc 			      ; ** not mem. DC. VALID? (3.0 and 3.1)
P_LPESCPARMS code, cbInData, lpInData
P_LPVOID0   lpOutData
APIERR
    mov     ax,SP_ERROR 		      ;General escape error
APIEND

; in ENUMOBJE.ASM
API int,    EnumObjects, TEXT, <ASM>
P_HDC	    hdc 				  ; validated by VALID? (3.0 and 3.1)
P_RVALUE    nObjectType, OBJ_MIN, OBJ_MAX      ; ** range 1-2
P_LPFNOENUM lpCallBack			   ; **
P_DWORD     lpClientData			; CLPVOID0 ?, but often just contains data

; in ENUMFONT.ASM
API int,    EnumFonts, TEXT, <ASM,ATMFRAMEDS>
P_HDC	    hdc 				  ; validated by VALID? (3.0 and 3.1) in RectStuff
P_CLPFACENAME0 lpFaceName
P_LPFNFENUM lpFontFunc			   ; **
P_DWORD     lpData				; CLPVOID0 ?, but often just contains data

; in ENUMFONT.ASM (new for Win 3.1)
API int     EnumFontFamilies, TEXT, <ASM>
P_HDC	    hdc 				  ; validated by VALID?
P_CLPFACENAME0 lpFaceName
P_LPFNFENUM lpFontFunc			   ;
P_DWORD     lpData				; CLPVOID0 ?, but often just contains data

; in GETSTUFF.ASM
API DWORD,  GetCurrentPosition, TEXT, <ASM,FUNNYFRAME,NODATA,DEBUGONLY>  ;nogen
P_HDC	    hdc 			    ;validated by VALID? (3.0 and 3.1) in GSV

; in WIN32.C
API BOOL    GetCurrentPositionEx, TEXT, <FUNNYFRAME, NODATA, DEBUGONLY>  ;nogen
P_HDC       hdc
P_LPPOINT   lpPoint

; in GETSTUFF.ASM
API DWORD,  GetDCOrg, TEXT, <ASM,FUNNYFRAME,NODATA,DEBUGONLY>  ;nogen
P_HDC	    hdc 			    ;validated by VALID? (3.0 and 3.1) in GSV

; in GETSTUFF.ASM
API DWORD,  GetBrushOrg, TEXT, <ASM,FUNNYFRAME,NODATA,DEBUGONLY> ; nogen
P_HDC	    hdc 			   ; validated by VALID? (3.0 and 3.1) in GSV

; in WIN32.C
API BOOL,   GetBrushOrgEx, TEXT, <FUNNYFRAME, NODATA, DEBUGONLY> ; nogen
P_HDC       hdc
P_LPPOINT   lpPoint

; in GETSTUFF.ASM
API DWORD,  GetBkColor, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY> ; nogen
P_HDC	    hdc 			       ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API int,    GetBkMode, TEXT, <ASM,FUNNYFRAME,NODATA,DEBUGONLY> ;nogen
P_HDC	    hdc 				 ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API DWORD,  GetTextColor, TEXT, <ASM,FUNNYFRAME,NODATA,DEBUGONLY>;nogen
P_HDC	    hdc 				     ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API WORD,   GetTextAlign, TEXT, <ASM, FUNNYFRAME,DEBUGONLY> ;nogen
P_HDC	    hdc 				      ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API int,    GetROP2, TEXT, <ASM, FUNNYFRAME, NODATA, DEBUGONLY>
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API int,    GetStretchBltMode, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY>     ;nogen
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API int,    GetPolyFillMode, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY>       ;nogen
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API int,    GetMapMode, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY>            ;nogen
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

; in GETSTUFF.ASM
API DWORD,  GetWindowOrg, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY>        ;nogen
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

;in WIN32.C
API BOOL,   GetWindowOrgEx, TEXT, <FUNNYFRAME,NODATA,DEBUGONLY>    	  ;nogen
P_HDC	    hdc
P_LPPOINT   lpPoint

; in GETSTUFF.ASM
API DWORD,  GetWindowExt, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY>        ;nogen
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

; in WIN32.C
API BOOL,   GetWindowExtEx, TEXT, <FUNNYFRAME,NODATA,DEBUGONLY>	          ;nogen
P_HDC	    hdc
P_LPSIZE    lpSize

; in GETSTUFF.ASM
API DWORD,  GetViewportOrg, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY>      ;nogen
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

; in WIN32.C
API BOOL,    GetViewportOrgEx, TEXT, <FUNNYFRAME,NODATA,DEBUGONLY>	  ;nogen
P_HDC	     hdc
P_LPPOINT    lpPoint

; in WIN32.C
API BOOL,   GetViewportExtEx, TEXT, <FUNNYFRAME,NODATA,DEBUGONLY>	  ;nogen
P_HDC	    hdc
P_LPSIZE    lpSize

; in GETSTUFF.ASM
API DWORD,  GetViewportExt, TEXT, <ASM, FUNNYFRAME,NODATA,DEBUGONLY>      ;nogen
P_HDC	    hdc 					      ;validated by VALID? (3.0 and 3.1) by GSV

; in CHARWID.ASM
API BOOL,   GetCharWidth, TEXT, <ASM, ATMFRAMEDS>
P_HDC	    hdc 			      ;validated by VALID? (3.0 and 3.1)
P_LPRWBUFFER chFirst, chLast, lpBuffer, 2     ;** size dictated by
					      ;char. range. Each entry in 
					      ;buffer is 2 bytes. Buffer 
					      ;filled in DEBUG Win 3.1 only
					      ;lpBuffer is an int. buffer
; in SETPIXEL.ASM
API DWORD,  GetPixel, TEXT, <ASM>
P_HDC	    hdc 				;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in SETPIXEL.ASM
API DWORD,  SetPixel, TEXT, <ASM>
P_HDCMETA   hdc 			 ; validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y
P_COLORREF  color
APIERR
    mov     ax, -1
    cwd
APIEND

; in STOCK.ASM
API HANDLE, GetStockObject, TEXT, <ASM>
P_VALUE     nIndex, STOCK_MAX			; ** range 0-16

; in GDIINQ1.ASM
API LONG,   GetBitmapBits, TEXT, <ASM, FUNNYFRAME,NODATA>
P_HBITMAP   hBitmap			   ;validated by VALID? (3.0 and 3.1)
P_LPBUFFERDW dwCount, lpBits		 ;** buffer size a DWORD
					 ;buffer filled in DEBUG Win 3.1

; in GDIINQ1.ASM
API int,    GetDeviceCaps, TEXT, <ASM>
P_HDCMETA   hdc 			    ;validated by VALID? (3.0 and 3.1)
P_DEVCAP    nIndex			    ;** valid int. indices even-numbered
					    ;ranges 0-44, 88-90, 104-108.

; in GDIINQ1.ASM
API LONG,   SetBitmapBits, TEXT, <ASM, FUNNYFRAME,NODATA>    ;nogen
P_HBITMAP   hBitmap		     ; validated by VALID? (3.0 and 3.1) in BitmapBits
P_CLPBUFFERDW dwCount, lpBits		  ;** buffer size a DWORD
					 ;buffer filled in DEBUG Win 3.1

; in GDIINQ2.ASM
API int,    GetObject, TEXT, <ASM>
P_HGDIOBJGET hObject			 ;** Validated by VALID? (3.0 and 3.1)
					 ; pens, brushes, fonts, bitmaps &
					 ; palettes.
P_LPBUFFERX nCount, lpObject		 ;** nCount occurs before lpBits
					 ;buffer filled in DEBUG Win 3.1

; in FASPECT.ASM
API DWORD,  GetAspectRatioFilter, TEXT, <ASM>
P_HDC	    hdc 				      ;validated by VALID? (3.0 and 3.1)

; in WIN32.C
API BOOL,   GetAspectRatioFilterEx, TEXT
P_HDC	    hdc
P_LPSIZE    lpSize

; in FASPECT.ASM
API DWORD,  SetMapperFlags, TEXT, <ASM>
P_HDCMETA   hdc 		       ; validated by VALID? (3.0 and 3.1) in WordSet
P_DFLAGS    dwFlag, MAPFLG_VALID_L, MAPFLG_VALID_H    ; ** only bit #1 is recognized

; in XFORMMAN.ASM
API DWORD,  GetNearestColor, TEXT, <ASM>
P_HDC	    hdc 				      ; validated by VALID? (3.0 and 3.1)
P_COLORREF  color

; in XFORMMAN.ASM
API DWORD,  OffsetViewportOrg, TEXT, <ASM, FUNNYFRAME,NODATA>	;nogen
P_HDCMETA   hdc 					  ;validated by VALID? (3.0 and 3.1) in OffsetOrg
P_int	    x
P_int	    y

; in WIN32.C
API BOOL,  OffsetViewportOrgEx, TEXT, <FUNNYFRAME,NODATA>	;nogen
P_HDCMETA  hdc
P_int	   x
P_int	   y
P_LPPOINT0 lpPoint

; in XFORMMAN.ASM
API DWORD,  OffsetWindowOrg, TEXT, <ASM, FUNNYFRAME,NODATA> ;nogen
P_HDCMETA   hdc 					  ;validated by VALID? (3.0 and 3.1) in OffsetOrg
P_int	    x
P_int	    y

; in WIN32.C
API BOOL,   OffsetWindowOrgEx, TEXT, <FUNNYFRAME,NODATA>    ;nogen
P_HDCMETA   hdc
P_int	    x
P_int	    y
P_LPPOINT0  lpPoint

; in XFORMMAN.ASM
API int,    SetMapMode, TEXT, <ASM>
P_HDCMETA   hdc 			   ;validated by VALID? (3.0 and 3.1)
P_RVALUE    nMapMode, MM_MIN, MM_MAX	;** range 1-8

; in XFORMMAN.ASM
API DWORD,  SetWindowExt, TEXT, <ASM,FUNNYFRAME,NODATA>  ;nogen
P_HDCMETA   hdc 		    ;validated by VALID? (3.0 and 3.1) in SetWinViewExt
P_int	    x
P_int	    y

; in WIN32.C
API BOOL    SetWindowExtEx, TEXT, <FUNNYFRAME,NODATA>	 ;nogen
P_HDCMETA   hdc  
P_int	    x
P_int	    y
P_LPSIZE0   lpSize

; in XFORMMAN.ASM
API DWORD,  SetViewportExt, TEXT, <ASM,FUNNYFRAME,NODATA> ;nogen
P_HDCMETA   hdc 		 ;validated by VALID? (3.0 and 3.1) in SetWinViewExt
P_int	    x
P_int	    y

; in WIN32.C
API BOOL,  SetViewportExtEx, TEXT, <FUNNYFRAME,NODATA>	  ;nogen
P_HDCMETA   hdc   
P_int	    x
P_int	    y
P_LPSIZE0   lpSize

; in XFORMMAN.ASM
API DWORD,  ScaleViewportExt, TEXT, <ASM,FUNNYFRAME,NODATA> ;nogen
P_HDCMETA   hdc 		 ;validated by VALID? (3.0 and 3.1) in ScaleExt
P_int	    xNum
P_intN0     XDenom		 ;calls MulDiv
P_int	    yNum
P_intN0     YDenom		 ;calls MulDiv

; in WIN32.C
API BOOL,   ScaleViewportExtEx, TEXT, <FUNNYFRAME,NODATA>  ;nogen
P_HDCMETA   hdc 		 ;validated by VALID? (3.0 and 3.1) in ScaleExt
P_int	    xNum
P_intN0     XDenom		 ;calls MulDiv
P_int	    yNum
P_intN0     YDenom		 ;calls MulDiv
P_LPSIZE0   lpSize

; in XFORMMAN.ASM
API DWORD,  ScaleWindowExt, TEXT, <ASM,FUNNYFRAME,NODATA>   ;nogen
P_HDCMETA   hdc 		   ;validated by VALID? (3.0 and 3.1) in ScaleExt
P_int	    xNum
P_intN0     XDenom		 ;calls MulDiv
P_int	    yNum
P_intN0     YDenom		 ;calls MulDiv

; in WIN32.C
API BOOL,   ScaleWindowExtEx, TEXT, <FUNNYFRAME,NODATA>     ;nogen
P_HDCMETA   hdc 		   ;validated by VALID? (3.0 and 3.1) in ScaleExt
P_int	    xNum
P_intN0     XDenom		 ;calls MulDiv
P_int	    yNum
P_intN0     YDenom		 ;calls MulDiv
P_LPSIZE0   lpSize

; in CLIPMAN.ASM
API int,    GetRgnBox, TEXT, <ASM>
P_HRGN	    hrgn			    ;validated by VALID? (3.0 and 3.1)
P_LPRECT    lpRect			  ;buffer filled in DEBUG Win 3.1

; in GETTEXTE.ASM
API DWORD,  GetTextExtent, TEXT, <ASM, ATMFRAMEDS>
P_HDC hdc			       ;validated by VALID? (3.0 and 3.1)
P_CLPBUFFER lpString, nCount

; win WIN32.C
API BOOL,   GetTextExtentPoint, TEXT
P_HDC	    hdc
P_CLPBUFFER lpString, nCount
P_LPSIZE    lpSize

; in TEXTATTS.ASM
API int,    GetTextCharacterExtra, TEXT, <ASM>
P_HDC hdc			       ;validated by VALID? (3.0 and 3.1)

; in GETTEXTF.ASM
API int,    GetTextFace, TEXT, <ASM>
P_HDC	    hdc 				;validated by VALID? (3.0 and 3.1)
P_LPBUFFERX lpFaceName, nBytes		   ;nBytes occurs before lpFaceName
					  ;buffer filled in DEBUG Win 3.1
APIERR
E_SETEMPTY  lpFaceName, nBytes
APIEND

; in GETTEXTM.ASM
API BOOL,   GetTextMetrics, TEXT, <ASM>
P_HDC	    hdc 				;validated by VALID? (3.0 and 3.1)
P_LPTEXTMETRIC lptm			  ;**buffer filled in DEBUG Win 3.1

; in ENVIRON.ASM
API int,    GetEnvironment, TEXT, <ASM>
P_CLPSTR    lpPortName		      ; ** converted to atom after
					   ; stripping off colons
P_LPBUFFER0 lpEnviron, nBytes		   ; NULL => return env. block size
					   ; buffer filled in DEBUG Win 3.1
APIERR
E_SETEMPTY  lpEnviron, nBytes
APIEND


; in ENVIRON.ASM
API int,    SetEnvironment, TEXT, <ASM>
P_CLPSTR    lpPortName		   ; converted to atom after stripping off ":"s
P_CLPBUFFER lpEnviron, wCount		 ; buffer filled in DEBUG Win 3.1

; in ADDFONTR.ASM
API int,    AddFontResource, TEXT, <ASM>
P_CLPSTRHRSRC lpFileName      ; ** null-terminated filename or handle to
				; loaded resource handle in LOWORD

; in DELFONT.ASM
API BOOL,   RemoveFontResource, TEXT, <ASM>
P_CLPSTRHRSRC lpFileName	; ** null-terminated filename or handle to
				; loaded resource handle in LOWORD

; in FONTENG2.ASM (new for Win 3.1)
API BOOL,   CreateScalableFontResource, TEXT, <ASM>
F_VALUE     fEmbed, 1
P_CLPSTR    lpResFileName
P_CLPSTR    lpFntFileName
P_CLPSTR0   lpCurrentPath

STRUCT	<MAT2>
F_WORD	fract1
F_int	value1
F_WORD	fract2
F_int	value2
F_WORD	fract2
F_int	value4
F_WORD	fract4
F_int	value4
ENDSTRUCT

_GenLP	<P_LPMAT2>,<LP>,%VLcbsMAT2

; in FONTENG2.ASM (new for Win 3.1)
API DWORD, GetGlyphOutline, TEXT, <ASM>
P_HDC	    hdc 				; validated by VALID?
P_WORD	    cch
P_FLAGS     wFlags, GLYPH_VALID               ; ** 0,1,2
P_LPGLYPHMETRICS lpMetrics
P_LPGGO0    cbBuffer, lpPoints
P_LPMAT2    lpXForm
APIERR	
	mov	ax,-1
	cwd
APIEND


; in FONTENG2.ASM (new for Win 3.1)
API DWORD, GetFontData, TEXT, <ASM>
P_HDC	    hdc 				; validated by VALID?
P_DWORD	    dwTable
P_DWORD	    dwOffset
P_LPFDATA0  lpBuffer, cbBuffer
APIERR	
	mov	ax,-1
	cwd
APIEND

; in FONTENG2.ASM (new for Win 3.1)
API BOOL,   GetCharABCWidths, TEXT, <ASM>
P_HDC	    hdc 			    ; validated by VALID?
P_LPRWBUFFER chFirst, chLast, lpBuffer, 6   ;size dictated by
					    ;char. range. Buffer filled
					    ;in DEBUG Win 3.1 only
					    ;Each entry in lpBuffer is 
					    ;of 6 bytes.

; in FONTENG2.ASM (new for Win 3.1)
API BOOL    GetOutlineTextMetrics, TEXT, <ASM>
P_HDC	    hdc 			    ;validated by VALID?
P_LPETM0    cb, lpBuffer		    ;** NULL ptr. is valid
					    ;Buffer filled in DEBUG Win 3.1

STRUCT  <KERNINGPAIR>
F_WORD  wFirst
F_WORD  wSecond
F_int   iKernAmount
ENDSTRUCT

P_LPKERNINGPAIRS0   macro   ckp, lpkp
    _DefParm    <ckp>,2,<opts>
    _DefParm    <lpkp>,4,<opts>
    if VLgen
        _FlsFrame
        mov     ax,VLcbsKERNINGPAIR     ; bx = ckp * sizeof(KERNINGPAIR)
        mul     word ptr _P_&ckp
        xchg    ax,bx
        mov     ax,_P_&lpkp             ; cx:ax = lpkp
        mov     cx,_P_&lpkp+2
        lcall   LP0
    endif
endm


API int     GetKerningPairs, TEXT
P_HDC       hdc
P_LPKERNINGPAIRS0    ckp, lpkp

; in OUTMAN.ASM
API BOOL,   LineTo, TEXT, <ASM>
P_HDCNOIC   hdc 				;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in OUTMAN.ASM
API DWORD,  MoveTo, TEXT, <ASM>
P_HDCMETA   hdc 			  ;validated by VALID? (3.0 and 3.1) in DPXlate
P_int	    x
P_int	    y

; in WIN32.C
API BOOL,   MoveToEx, TEXT
P_HDCMETA   hdc    
P_int	    x
P_int	    y
P_LPPOINT0  lpPoint

; in OUTMAN.ASM
API BOOL,   Polyline, TEXT, <ASM>
P_HDCNOIC   hdc 		      ;validated by VALID? (3.0 and 3.1)
P_CLPPOINTBUFFER lpPoints, nCount

; in LINEDDA.ASM
API void,   LineDDA, TEXT, <ASM, FUNNYFRAME>
P_XY1XY2    x1,y1,x2,y2 	    ; overflow problem here too?
P_LPFNLENUM lpFontFunc			 ; **
P_DWORD     lpData			      ; CLPVOID0 ?, but often just contains data

; in MULDIV.ASM
API int,    MulDiv, TEXT, <ASM, NOGEN>
P_int	    a
P_int	    b
P_intN0     c				;** MulDiv checks for overflow

; in POLYGON.ASM
API BOOL,   Polygon, TEXT, <ASM>
P_HDCNOIC   hdc 		      ;validated by VALID? (3.0 and 3.1)
P_CLPPOINTBUFFER lpPoints, nCount

; in POLYGON.ASM
API BOOL,   PolyPolygon, TEXT, <ASM>
P_HDCNOIC   hdc 		      ;validated by VALID? (3.0 and 3.1)
P_POLYPOLYPOINTS lpPoints, lpPolyCounts, nCount ;lpPolyCounts is a buffer
						;of nCount Integers. lpPoints
						;is a buffer of POINTS. Size of
						;lpPoints det. by sum of all
						;integers in lpPolyCounts

ifdef WOW
API BOOL,   PolyPolylineWOW, TEXT, <ASM>
P_HDCNOIC   hdc 		      ;validated by VALID? (3.0 and 3.1)
P_POLYPOLYLARGEPOINTS lpPoints, lpPolyCounts, nCount
endif

; in PATBL.ASM
API BOOL,   StretchBlt, TEXT, <ASM>
P_HDCNOIC   hdcDst			 ; validated by VALID? (3.0 and 3.1)
P_int	    xDst
P_int	    yDst
P_int	    cxDst
P_int	    cyDst
P_HDC       hdcSrc			 ; validated by VALID? (3.0 and 3.1)
P_int	    xSrc
P_int	    ySrc
P_int	    cxSrc
P_int	    cySrc
P_ROP	    rop

; in PATBL.ASM
API BOOL,   BitBlt, TEXT, <ASM>
P_HDCNOIC   hdcDst		     ; validated by VALID? (3.0 and 3.1)
P_int	    xDst
P_int	    yDst
P_int	    cxDst
P_int	    cyDst
P_HDC0      hdcSrc	    ; ** hSrcDC Used only if higher 2 bits of each
P_int	    cxSrc	    ; nibble of HIWORD(rop) != lower 2 bis of
P_int	    cySrc	    ; same nibble. Validated by VALID? (3.1 only)
P_ROP	    rop 	    ; XSrc and YSrc are int. values.

; in PATBL.ASM
API BOOL,   PatBlt, TEXT, <ASM>
P_HDCNOIC   hdc 		      ;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y
P_int	    cx
P_int	    cy
P_ROP	    rop 		    ; ** Only HIWORD used. LOWORD carried
				; around for 1.x driver compatiblity

; in GETPOBJ.ASM
API DWORD,  SetBrushOrg, TEXT, <ASM>
P_HDC	    hdc 			 ; validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in GETPOBJ.ASM
API BOOL,   UnrealizeObject, TEXT, <ASM>
P_HGDIOBJUNR hObject			  ;** brush or palette
					  ;cannot be selected into any DC

; in CLIPMAN.ASM
API int,    ExcludeClipRect, TEXT, <ASM, FUNNYFRAME,NODATA>
P_HDCMETA   hdc 				;validated by VALID? (3.0 and 3.1) in RectStuff
P_XY1XY2    x1,y1,x2,y2

; in CLIPMAN.ASM
API int,    GetClipBox, TEXT, <ASM>
P_HDC	    hdc 			     ;validated by VALID? (3.0 and 3.1)
P_LPRECT    lpRect			  ;buffer filled in DEBUG Win 3.1

; in CLIPMAN.ASM
API int,    IntersectClipRect, TEXT, <ASM, FUNNYFRAME,NODATA>  ; nogen
P_HDCMETA   hdc 				;validated by VALID? (3.0 and 3.1) in RectStuff
P_XY1XY2    x1,y1,x2,y2

; in CLIPMAN.ASM
API int,    SelectClipRgn, TEXT, <ASM>
P_HDCMETA   hdc 		     ; validated by VALID? (3.0 and 3.1)
P_HRGN0     hrgn		     ; validated by VALID? (3.0), VALIDDEBUG? (3.1)

; in RG.ASM
API HRGN,   CreateRectRgnIndirect, TEXT, <ASM>
P_CLPRECT   lpRect

; in RG.ASM
API BOOL,   EqualRgn, TEXT, <ASM>
P_HRGN	    hrgn1			    ;validated by VALID? (3.0 and 3.1) in RectStuff
P_HRGN	    hrgn2			    ;validated by VALID? (3.0 and 3.1) in RectStuff

; in RG.ASM
API BOOL,   RectInRegion, TEXT, <ASM, FUNNYFRAME> ;nogen
P_HRGN	    hrgn		    ;validated by VALID? (3.0), ValidDebug? (3.1) StuffInRegion
P_CLPRECT   lpRect

; in RG.ASM
API BOOL,   RectVisible, TEXT, <ASM, FUNNYFRAME> ; nogen
P_HDC	    hdc 		     ;validated by VALID? (3.0), ValidDebug? (3.1) StuffVisible
P_CLPRECT   lpRect

; in RG.ASM
API int,    OffsetRgn, TEXT, <ASM>
P_HRGN	    hrgn		     ;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in RG.ASM
API int,    OffsetClipRgn, TEXT, <ASM>
P_HDCMETA   hdc 			  ;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in REGION.ASM
API HRGN,   CreateRectRgn, TEXT, <ASM, NOGEN>
P_XY1XY2    x1,y1,x2,y2 		; X2-X1 and Y2-Y1 under 32,767 units

; in REGION.ASM
API int,    CombineRgn, TEXT, <ASM>
P_HRGN	    hrgnDst				;validated by VALID? (3.0 and 3.1)
P_HRGN	    hrgnSrc1				;validated by VALID? (3.0 and 3.1)
P_HRGN0     hrgnSrc2				;validated by VALID? (3.0 and 3.1)
						; Can be NULL if code is RGN_COPY
P_RVALUE    code, RGN_MIN, RGN_MAX	  ;** range 1-5

; in REGION.ASM
API void,   SetRectRgn, TEXT, <ASM>
P_HRGN	    hrgn		      ; validated by VALID? (3.0 and 3.1)
P_XY1XY2    x1,y1,x2,y2

; in RGOUT.C
API BOOL,   FillRgn, TEXT
P_HDCNOIC   hdc 				  ; Checked by Valid()
P_HRGN	    hrgn				 ; Checked by Valid()
P_HBRUSH    hBrush			       ; Checked by Valid()

; in RG.ASM
API BOOL,   PtInRegion, TEXT, <ASM>
P_HRGN	    hrgn		     ;checked by Valid() (3.0 and 3.1)
P_int       x
P_int       y

; in RGOUT.C
API BOOL,   PaintRgn, TEXT
P_HDCNOIC   hdc 		      ;checked by Valid() (3.0 and 3.1)
P_HRGN	    hrgn		     ;checked by Valid() (3.0 and 3.1)

; in RG.ASM
API BOOL,   PtVisible, TEXT, <ASM>
P_HDC	    hdc 		      ;validated by Valid() (3.0 and 3.1)
P_int	    x
P_int	    y

; in RGOUT.C
API BOOL,   FrameRgn, TEXT
P_HDCNOIC   hdc 				  ; Checked by Valid()
P_HRGN	    hrgn				 ; Checked by Valid()
P_HBRUSH    hBrush			       ; Checked by Valid()
P_int	    cx
P_int	    cy

; in RGOUTZ.ASM
API BOOL,   InvertRgn, TEXT, <ASM>
P_HDCNOIC   hdc 			;validated by VALID? (3.0 and 3.1)
P_HRGN	    hrgn			;validated by VALID? (3.0 and 3.1)

; in OBJSEL.ASM
API HANDLE, SelectObject, TEXT, <ASM, ATMFRAMEDS>
P_HDCMETA   hdc 			; validated by VALID? (3.0 and 3.1)
P_HGDIOBJSEL hObj			; ** validated by VALID? (3.0 and 3.1)
					; only pens, brushes, fonts, bitmaps &
					; regions (no palettes)

; in COLOR.ASM
API DWORD,  SetTextColor, TEXT, <ASM>
P_HDCMETA   hdc 		       ; validated by VALID? (3.0 and 3.1)
P_COLORREF  color

; in COLOR.ASM
API DWORD,  SetBkColor, TEXT, <ASM>
P_HDCMETA   hdc 		       ; validated by VALID? (3.0 and 3.1)
P_COLORREF  color
APIERR
    mov     dh,80h	    ;; return 0x8000:0x0000
APIEND

; in NEWXFORM.ASM
API int,    SetBkMode, TEXT, <ASM,FUNNYFRAME,NODATA>  ;nogen
P_HDCMETA   hdc 		       ; validated by VALID? (3.0 and 3.1) in WordSet
P_RVALUE    nBkMode, BK_MIN, BK_MAX ; range 1-2

; in NEWXFORM.ASM
API WORD,   SetTextAlign, TEXT, <ASM,FUNNYFRAME> ;nogen
P_HDCMETA   hdc 		      ; validated by VALID? (3.0 and 3.1) in WordSet
P_FLAGS     wFlags, TA_VALID	     ; **

; in NEWXFORM.ASM
API int,    SetROP2, TEXT, <ASM, FUNNYFRAME,NODATA>  ;nogen
P_HDCMETA   hdc 		       ; validated by VALID? (3.0 and 3.1) in WordSet
P_RVALUE    nDrawMode, R2_MIN,R2_MAX ; ** range 1-16

; in NEWXFORM.ASM
API int,    SetStretchBltMode, TEXT, <ASM, FUNNYFRAME,NODATA> ;nogen
P_HDCMETA   hdc 			  ;validated by VALID? (3.0 and 3.1) in WordSet
P_RVALUE    nStrMode, STR_MIN, STR_MAX ;** range 1-3

; in NEWXFORM.ASM
API int,    SetPolyFillMode, TEXT, <ASM,FUNNYFRAME,NODATA>  ;nogen
P_HDCMETA   hdc 				    ;validated by VALID? (3.0 and 3.1) in WordSet
P_RVALUE    nPolyFillMode,PFILL_MIN, PFILL_MAX	 ; ** range 1-2

; in NEWXFORM.ASM
API DWORD,  SetWindowOrg, TEXT, <ASM>
P_HDCMETA   hdc 			   ;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in WIN32.C
API BOOL,   SetWindowOrgEx, TEXT
P_HDCMETA   hdc    
P_int	    x
P_int	    y
P_LPPOINT0  lpPoint

; in NEWXFORM.ASM
API DWORD,  SetViewportOrg, TEXT, <ASM>
P_HDCMETA   hdc 			;validated by VALID? (3.0 and 3.1)
P_int	    x
P_int	    y

; in WIN32.C
API BOOL,  SetViewportOrgEx, TEXT
P_HDCMETA   hdc    
P_int	    x
P_int	    y
P_LPPOINT0  lpPoint

;----------------------------------------------------------------------------;
; 	D I B     V A L I D A T I O N	R O U T I N E S			     ;
;----------------------------------------------------------------------------;
; NOTES:								     ;
;									     ;
; (1). The size of a color table entry is sizeof RGB_TRIPLE for a core DIB   ;
;      header and RGB_QUAD for a info DIB header. However, if wUsage 	     ;
;      indicates a npalette usage, the size per entry is 2 bytes.	     ;
;									     ;
; (2). The lpInfoHeader paramater in CreateDIBitmap may not have a color     ;
;      table in the header. 						     ;
;									     ;
; (3). For SetDIBits/GetDIBits and SetDIBitsToDevice, a 'numScans' parameter ;
;      specifies the size of the DIBits. The buffer may not contain the      ;
;      complete DIB.							     ;
;									     ;
;      However, in the case of StretchDIBits, the entire DIB buffer should   ;
;      be present and the height of the DIB should be picked up from the     ;
;      associated header. Likewise, if an initializer DIB is provided in the ;
;      CreateDIBitmap call, it has to have a complete DIB buffer.	     ;
;									     ;
; (4). SetDIBitsToDevice specifies a rectangle in the DIB. This is the only  ;
;      part of the DIB that will be accessed. The validation code should     ;
;      figure out the amount of the DIB buffer that will need to ve accessed ;
;      and validate that the buffer is big enough for it.                    ;
;									     ;
; (5). If the DIB is RLE compressed and the biSizeImage field is non zero,   ;
;      we will use that size to validate the length of the DIB buffer.	     ;
;									     ;
; (6). The validation code will not validate the bits per pixel and the      ;
;      biCompression fields. This is to allow expansion of these fields in   ;
;      the future. The validation code for these would instead be done in    ;
;      the DIB simulation code.						     ;
;----------------------------------------------------------------------------;

; in DIBITM.ASM
API int,    SetDIBits, TEXT, <ASM>
P_HDCNOIC   hdc 			  ;validated by VALID? (3.0 and 3.1)
P_HANDLE    hBitmap			  ;validated by VALID? (3.1 only)
					  ;must not be selected into a DC
P_WORD	    nStartScan
P_CLPBITSINFOBUFFER nNumScans, lpBits, lpBitsInfo, wUsage
				       ;** lpBits size depends on number of
				       ;scans and info. in lpBitsInfo
				       ;lpBitsInfo points to BITMAPINFO
				       ;or BITMAPCOREINFO

; in DIBITM.ASM
API HBITMAP, CreateDIBitmap, TEXT, <ASM>
P_HDCNOIC   hdc 				     ; validated by VALID? (3.0 and 3.1)
P_CLPBITMAPINFOHEADER lpInfoHeader	       ; ** ptr. to BITMAPINFOHEADER or BITMAPCOREHEADER
P_CLPDIBITMAP0	dwUsage, lpInitBits, lpInitInfo, wUsage
					       ; ** lpInitBits NULL if
					       ; dwUsage is not CBM_INIT
					       ; Size of lpInitBits depends
					       ; on fields in info. block
					       ; lpInitInfo points to BITMAPINFO
					       ; or BITMAPCOREINFO

; in DIBITM.ASM
API int,    SetDIBitsToDevice, TEXT, <ASM>
P_HDCNOIC   hdc 			    ;validated by VALID? (3.0 and 3.1)
P_WORD	    xDst
P_WORD	    yDst
P_WORD	    cxDst
P_CLPRECTBITSINFOBUFFER cyDst, xSrc, ySrc, nStartScan,nNumScans, lpBits, lpBitsInfo, wUsage
  				       ;** lpBits size depends on number of
				       ;scans and info. in lpBitsInfo
				       ;lpBitsInfo points to BITMAPINFO
				       ;or BITMAPCOREINFO

; in DIBITM.ASM
API int,    GetDIBits, TEXT, <ASM>
P_HDC	    hdc 			  ;validated by VALID? (3.0 and 3.1)
P_HANDLE    hBitmap			  ;validated by VALID? (3.1 only)
P_WORD	    nStartScan
P_LPBITSINFOBUFFER0 nNumScans, lpBits, lpBitsInfo, wUsage
			               ;**lpBits
				       ;can be NULL.
				       ;buffer size depends on number of
				       ;scans and info. in lpBitsInfo
				       ;lpBitsInfo is a ptr. to
				       ;BITMAPINFO or BITMAPCOREINFO

; in DIBSTRCH.ASM
API int, StretchDIBits, TEXT, <ASM>
P_HDCNOIC   hdc 			    ;validated by VALID? (3.0 and 3.1)
P_WORD	    xDst
P_WORD	    yDst
P_WORD	    cxDst
P_WORD	    cyDst
P_WORD	    xSrc
P_WORD	    ySrc
P_WORD	    cxSrc
P_WORD	    cySrc
P_CFULLLPBITSINFOBUFFER lpBits, lpBitsInfo, wUsage
				       ;** lpBits size depends on height
				       ;and info. in lpBitsInfo
				       ;lpBitsInfo points to BITMAPINFO
				       ;or BITMAPCOREINFO
P_ROP	    rop

;----------------------------------------------------------------------------;
; in TEXTOUT.C
API BOOL, ExtTextOut, TEXT, <ATMFRAMEDS>
P_HDCNOIC   hdc 				 ; checked by Valid()
P_int	    x
P_int	    y
P_FLAGS     flags, ETO_VALID		    ; ** (1,2,4)
P_CLPRECT0  lprc
P_CLPETOBUF lpString, nCount, lpDx     ;lpDx is NULL or has nCount integers


; in TEXTOUT.C
API BOOL,   TextOut, TEXT
P_HDCNOIC   hdc
P_int	    X
P_int	    Y
P_CLPBUFFER lpString, nCount