/***********************************************************************
TWAIN source code:
Copyright (C) '92-'93 Wang Laboratories, Inc.:
All rights reserved.
Author: Ken Spina
Project: TWAIN Scanner Support in O/i Client
Module: TRIPLET.C - Contains IMGTwainExecTriplet() & IMGTwainLayout()
Comments: DLL to support Wang Open/image Products
History of Revisions:
$Log: S:\oiwh\oitwain\triplet.c_v $
*
* Rev 1.1 20 Jul 1995 12:23:52 KFS
* changed oitwain.h to engoitwa.h and display.h to engdisp.h
*
* Rev 1.0 20 Jul 1995 10:32:00 KFS
* Initial entry
*
* Rev 1.1 23 Aug 1994 16:17:02 KFS
* No code change, add vlog comments to file on checkin
*
REV# INITIALS DATE CHANGES
1 kfs 03/10/93 Created for OITWAIN.DLL functions
*************************************************************************/
#include "nowin.h" // eliminate not used Window definitions
#include <windows.h> // Note: TWAIN.h also REQUIRES windows defs
#include "TWAIN.h" // for TW data type defines
//#include "oitwain.h" // public function prototypes & definitions
#include "engoitwa.h" // Prototypes & definitions used by other DLL's
// Previously called oitwain.h
#include "internal.h" // non-public function prototypes & definitions
#include "engdisp.h" // the private prop stuff -- jar
/* imported variables from other modules */
extern char szOiTwainProp[]; // "O/i TWAIN Support";
extern DSMENTRYPROC lpDSM_Entry; // entry point to the SM
/* exported variables to other modules (extern in other modules) */
// Globals within module
/***********************************************************************
*
* FUNCTION: IMGTwainExecTriplet()
*
* COMMENTS: Executes triplets that return no other data except for
* what is in the defined structure.
* Must Match DAT_ with required structure of TWAIN triplet
*
*
* ARGS: HWnd - handle to O/i Window
* pTriplet - pointer to O/i defined data struct in OITWAIN.H
*
* RETURNS: returns combined TWAIN & O/i error message, further
* error info found in DCError of Triplet structure,
*
*/
WORD PASCAL IMGTwainExecTriplet(HWND hWnd, pSTR_TRIPLET pTriplet)
{
STR_DCERROR DCError;
HANDLE hOiSupport;
pTWAIN_SUPPORT pOiSupport = 0L;
WORD wDatGroup;
DCError.dcRC = DCError.dcCC = 0; // TWXC_SUCCESS
if (!IsWindow(hWnd))
{
DCError.dcRC = TWRC_BAD_WND;
}
if (!(hOiSupport = IMGGetProp(hWnd, szOiTwainProp)))
{
DCError.dcRC = TWRC_NULLPTR;
}
if (!(pOiSupport = (pTWAIN_SUPPORT)GlobalLock(hOiSupport)))
{
DCError.dcRC = TWRC_MEMLOCK;
}
if (pTriplet)
{
if (DCError.dcRC) // upfront error, abort function
{
pTriplet->DCError = DCError;
return DCError.dcRC;
}
switch (pTriplet->wDATType)
{
case DAT_CAPABILITY:
case DAT_EVENT:
case DAT_IDENTITY:
case DAT_PARENT:
case DAT_PENDINGXFERS:
case DAT_SETUPMEMXFER:
case DAT_SETUPFILEXFER:
case DAT_STATUS:
case DAT_USERINTERFACE:
case DAT_XFERGROUP:
wDatGroup = DG_CONTROL;
break;
case DAT_IMAGEINFO:
case DAT_IMAGELAYOUT:
case DAT_IMAGEMEMXFER:
case DAT_IMAGENATIVEXFER:
case DAT_IMAGEFILEXFER:
case DAT_CIECOLOR:
case DAT_GRAYRESPONSE:
case DAT_RGBRESPONSE:
case DAT_JPEGCOMPRESSION:
case DAT_PALETTE8:
wDatGroup = DG_IMAGE;
break;
default: // if unrecognized, return with error
DCError.dcRC = TWRC_UNKNOWNVALUETYPE;
pTriplet->DCError = DCError;
return DCError.dcRC;
}
if (pTriplet->pVoidStr)
{
DCError.dcRC = (*lpDSM_Entry)(&pOiSupport->AppID,
&pOiSupport->DsID,
wDatGroup,
pTriplet->wDATType,
pTriplet->wMsgState,
(TW_MEMREF)pTriplet->pVoidStr);
}
else
{
DCError.dcRC = TWRC_NULLPTR;
pTriplet->DCError = DCError;
return DCError.dcRC;
}
// get condition code upon failure and its not the End of xfer
if (DCError.dcRC && (DCError.dcRC != TWRC_XFERDONE))
{
DCError.dcCC = DCGetConditionCode(pOiSupport);
}
// Report error on way out if structure defined properly
pTriplet->DCError = DCError;
}
else
{ // no structure to return error message
DCError.dcRC = TWRC_NULLPTR;
return DCError.dcRC;
}
if (pOiSupport) // unlock TWAIN info
{
GlobalUnlock(hOiSupport);
}
return DCError.dcRC;
} // end IMGTwainExecTriplet()
/***********************************************************************
* FUNCTION: IMGTwainLayout
*
* ARGS: lpLayout Structure to bSet, bDefault, and pImageLayout
*
* RETURNS: dcRC TWAIN status return code, pImageLayout filled in if
* bSet FALSE with current or default values, or if
* bSet TRUE with default TRUE, will set current values to
* default values, and return them
* bSet TRUE and default FALSE, user fills in structure with
* new values for layout
*/
WORD PASCAL IMGTwainLayout(HWND hWnd, pSTR_IMGLAYOUT pLayout)
{
TW_UINT16 dcRC = TWRC_SUCCESS;
TW_UINT16 wCCode = TWCC_SUCCESS;
TW_UINT16 temp = 0;
TW_UINT16 wMsgState;
HANDLE hOiSupport;
pTWAIN_SUPPORT pOiSupport = 0L;
if (!IsWindow(hWnd))
{
dcRC = TWRC_BAD_WND;
}
if (!(hOiSupport = IMGGetProp(hWnd, szOiTwainProp)))
{
dcRC = TWRC_NULLPTR;
}
if (!(pOiSupport = (pTWAIN_SUPPORT)GlobalLock(hOiSupport)))
{
dcRC = TWRC_MEMLOCK;
}
/*
Values to determine wMsgState
temp = 0x0000 then MSG_GET
temp = 0x0001 then MSG_SET
temp = 0x0010 then MSG_GETDEFAULT
temp = 0x0011 then MSG_RESET
*/
if (pLayout)
{
if (dcRC)
{
pLayout->DCError.dcRC = dcRC;
pLayout->DCError.dcCC = wCCode;
return dcRC;
}
if (pLayout->bSet)
temp = 0x1;
if (pLayout->bDefault)
temp |= 0x2;
switch (temp)
{
default:
case 0:
wMsgState = MSG_GET;
break;
case 1:
wMsgState = MSG_SET;
break;
case 2:
wMsgState = MSG_GETDEFAULT;
break;
case 3:
wMsgState = MSG_RESET;
}
dcRC = (*lpDSM_Entry)(&pOiSupport->AppID,
&pOiSupport->DsID,
DG_IMAGE,
DAT_IMAGELAYOUT,
wMsgState,
(TW_MEMREF)&pLayout->ImageLayout);
if (dcRC!= TWRC_SUCCESS)
wCCode = DCGetConditionCode(pOiSupport);
pLayout->DCError.dcRC = dcRC;
pLayout->DCError.dcCC = wCCode;
}
else
dcRC = TWRC_NULLPTR;
if (pOiSupport) // unlock TWAIN info
{
GlobalUnlock(hOiSupport);
}
return dcRC;
} // IMGTwainLayOut