windows-server-2003/multimedia/directx/dxg/dd/ddraw/ddraw16/gdihelp.h

////////////////////////////////////////////////////////////////////////
//
// GDIHELP.H  - GDI TOOLHELP FUNCTIONS
//
// a bunch of GDI utility functions that are usefull for walking
// all GDI objects and dinking with them.
//
// ToddLa
//
////////////////////////////////////////////////////////////////////////

#ifdef __cplusplus
extern "C" {            /* Assume C declarations for C++ */
#endif	/* __cplusplus */

////////////////////////////////////////////////////////////////////////
//
// object enumeration functions
//
////////////////////////////////////////////////////////////////////////

#define OBJ_PEN          1
#define OBJ_BRUSH        2
#define OBJ_FONT         3
#define OBJ_PALETTE      4
#define OBJ_BITMAP       5
#define OBJ_RGN          6
#define OBJ_DC           7
#define OBJ_DISABLED_DC  8
#define OBJ_METADC       9
#define OBJ_METAFILE     10
#define OBJ_SAVEDC       42
#define OBJ_MAX          OBJ_SAVEDC

BOOL        BeginGdiSnapshot(void);
void        EndGdiSnapshot(void);

typedef     void (*EnumGdiObjectsCallback)(HGDIOBJ, LPARAM lParam);
void        EnumGdiObjects(UINT type, EnumGdiObjectsCallback callback, LPARAM lParam);

////////////////////////////////////////////////////////////////////////
//
// query information functions
//
////////////////////////////////////////////////////////////////////////

HBITMAP     StockBitmap(void);
BOOL        IsMemoryDC(HDC hdc);
BOOL        IsScreenDC(HDC hdc);
BOOL        IsObjectPrivate(HGDIOBJ h);
BOOL        IsObjectStock(HGDIOBJ h);

HANDLE      GetObjectOwner(HGDIOBJ h);
LPCSTR      GetObjectOwnerName(HGDIOBJ h);

HBITMAP     CurrentBitmap(HDC hdc);
HBRUSH      CurrentBrush(HDC hdc);
HPEN        CurrentPen(HDC hdc);
HPALETTE    CurrentPalette(HDC hdc);

HDC         GetBitmapDC(HBITMAP hbm);
HPALETTE    GetBitmapPalette(HBITMAP hbm);

////////////////////////////////////////////////////////////////////////
//
// conversion functions.
//
////////////////////////////////////////////////////////////////////////

HBITMAP     ConvertDDBtoDS(HBITMAP hbm);
HBITMAP     ConvertDStoDDB(HBITMAP hbm, BOOL fForceConvert);
HBRUSH      ConvertPatternBrush(HBRUSH hbr);
void        ConvertIcon(HICON hIcon);

void        ConvertObjects(void);
void        ConvertObjectsBack(void);
void        ConvertBitmapsBack(BOOL fForceConvert);

void        ReRealizeObjects(void);

LPVOID      GetPDevice(HDC hdc);

#ifdef __cplusplus
}                       /* End of extern "C" { */
#endif /* __cplusplus */