329 lines
8.2 KiB
C
329 lines
8.2 KiB
C
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/*************************************************************************
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**
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** OLE 2 Standard Utilities
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**
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** olestd.c
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**
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** This file contains utilities that are useful for dealing with
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** target devices.
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**
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** (c) Copyright Microsoft Corp. 1992 All Rights Reserved
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**
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*************************************************************************/
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#define STRICT 1
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#include "ole2ui.h"
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#ifndef WIN32
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#include <print.h>
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#endif
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/*
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* OleStdCreateDC()
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*
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* Purpose:
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*
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* Parameters:
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*
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* Return Value:
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* SCODE - S_OK if successful
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*/
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STDAPI_(HDC) OleStdCreateDC(DVTARGETDEVICE FAR* ptd)
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{
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HDC hdc=NULL;
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LPDEVNAMES lpDevNames;
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LPDEVMODE lpDevMode;
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LPTSTR lpszDriverName;
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LPTSTR lpszDeviceName;
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LPTSTR lpszPortName;
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if (ptd == NULL) {
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hdc = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL);
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goto errReturn;
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}
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lpDevNames = (LPDEVNAMES) ptd; // offset for size field
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if (ptd->tdExtDevmodeOffset == 0) {
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lpDevMode = NULL;
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}else{
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lpDevMode = (LPDEVMODE) ((LPSTR)ptd + ptd->tdExtDevmodeOffset);
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}
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lpszDriverName = (LPTSTR) lpDevNames + ptd->tdDriverNameOffset;
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lpszDeviceName = (LPTSTR) lpDevNames + ptd->tdDeviceNameOffset;
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lpszPortName = (LPTSTR) lpDevNames + ptd->tdPortNameOffset;
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hdc = CreateDC(lpszDriverName, lpszDeviceName, lpszPortName, lpDevMode);
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errReturn:
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return hdc;
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}
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/*
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* OleStdCreateIC()
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*
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* Purpose: Same as OleStdCreateDC, except that information context is
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* created, rather than a whole device context. (CreateIC is
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* used rather than CreateDC).
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* OleStdDeleteDC is still used to delete the information context.
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*
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* Parameters:
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*
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* Return Value:
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* SCODE - S_OK if successful
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*/
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STDAPI_(HDC) OleStdCreateIC(DVTARGETDEVICE FAR* ptd)
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{
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HDC hdcIC=NULL;
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LPDEVNAMES lpDevNames;
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LPDEVMODE lpDevMode;
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LPTSTR lpszDriverName;
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LPTSTR lpszDeviceName;
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LPTSTR lpszPortName;
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if (ptd == NULL) {
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hdcIC = CreateIC(TEXT("DISPLAY"), NULL, NULL, NULL);
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goto errReturn;
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}
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lpDevNames = (LPDEVNAMES) ptd; // offset for size field
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lpDevMode = (LPDEVMODE) ((LPTSTR)ptd + ptd->tdExtDevmodeOffset);
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lpszDriverName = (LPTSTR) lpDevNames + ptd->tdDriverNameOffset;
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lpszDeviceName = (LPTSTR) lpDevNames + ptd->tdDeviceNameOffset;
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lpszPortName = (LPTSTR) lpDevNames + ptd->tdPortNameOffset;
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hdcIC = CreateIC(lpszDriverName, lpszDeviceName, lpszPortName, lpDevMode);
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errReturn:
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return hdcIC;
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}
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#ifdef NEVER
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// This code is wrong
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/*
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* OleStdCreateTargetDevice()
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*
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* Purpose:
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*
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* Parameters:
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*
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* Return Value:
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* SCODE - S_OK if successful
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*/
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STDAPI_(DVTARGETDEVICE FAR*) OleStdCreateTargetDevice(LPPRINTDLG lpPrintDlg)
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{
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DVTARGETDEVICE FAR* ptd=NULL;
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LPDEVNAMES lpDevNames, pDN;
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LPDEVMODE lpDevMode, pDM;
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UINT nMaxOffset;
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LPTSTR pszName;
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DWORD dwDevNamesSize, dwDevModeSize, dwPtdSize;
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if ((pDN = (LPDEVNAMES)GlobalLock(lpPrintDlg->hDevNames)) == NULL) {
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goto errReturn;
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}
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if ((pDM = (LPDEVMODE)GlobalLock(lpPrintDlg->hDevMode)) == NULL) {
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goto errReturn;
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}
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nMaxOffset = (pDN->wDriverOffset > pDN->wDeviceOffset) ?
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pDN->wDriverOffset : pDN->wDeviceOffset ;
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nMaxOffset = (pDN->wOutputOffset > nMaxOffset) ?
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pDN->wOutputOffset : nMaxOffset ;
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pszName = (LPTSTR)pDN + nMaxOffset;
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dwDevNamesSize = (DWORD)((nMaxOffset+lstrlen(pszName) + 1/* NULL term */)*sizeof(TCHAR));
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dwDevModeSize = (DWORD) (pDM->dmSize + pDM->dmDriverExtra);
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dwPtdSize = sizeof(DWORD) + dwDevNamesSize + dwDevModeSize;
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if ((ptd = (DVTARGETDEVICE FAR*)OleStdMalloc(dwPtdSize)) != NULL) {
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// copy in the info
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ptd->tdSize = (UINT)dwPtdSize;
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lpDevNames = (LPDEVNAMES) &ptd->tdDriverNameOffset;
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_fmemcpy(lpDevNames, pDN, (size_t)dwDevNamesSize);
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lpDevMode=(LPDEVMODE)((LPTSTR)&ptd->tdDriverNameOffset+dwDevNamesSize);
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_fmemcpy(lpDevMode, pDM, (size_t)dwDevModeSize);
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ptd->tdDriverNameOffset += 4 ;
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ptd->tdDeviceNameOffset += 4 ;
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ptd->tdPortNameOffset += 4 ;
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ptd->tdExtDevmodeOffset = (UINT)dwDevNamesSize + 4 ;
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}
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errReturn:
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GlobalUnlock(lpPrintDlg->hDevNames);
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GlobalUnlock(lpPrintDlg->hDevMode);
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return ptd;
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}
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#endif // NEVER
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/*
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* OleStdDeleteTargetDevice()
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*
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* Purpose:
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*
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* Parameters:
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*
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* Return Value:
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* SCODE - S_OK if successful
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*/
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STDAPI_(BOOL) OleStdDeleteTargetDevice(DVTARGETDEVICE FAR* ptd)
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{
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BOOL res=TRUE;
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if (ptd != NULL) {
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OleStdFree(ptd);
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}
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return res;
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}
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/*
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* OleStdCopyTargetDevice()
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*
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* Purpose:
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* duplicate a TARGETDEVICE struct. this function allocates memory for
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* the copy. the caller MUST free the allocated copy when done with it
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* using the standard allocator returned from CoGetMalloc.
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* (OleStdFree can be used to free the copy).
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*
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* Parameters:
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* ptdSrc pointer to source TARGETDEVICE
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*
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* Return Value:
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* pointer to allocated copy of ptdSrc
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* if ptdSrc==NULL then retuns NULL is returned.
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* if ptdSrc!=NULL and memory allocation fails, then NULL is returned
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*/
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STDAPI_(DVTARGETDEVICE FAR*) OleStdCopyTargetDevice(DVTARGETDEVICE FAR* ptdSrc)
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{
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DVTARGETDEVICE FAR* ptdDest = NULL;
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if (ptdSrc == NULL) {
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return NULL;
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}
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if ((ptdDest = (DVTARGETDEVICE FAR*)OleStdMalloc(ptdSrc->tdSize)) != NULL) {
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_fmemcpy(ptdDest, ptdSrc, (size_t)ptdSrc->tdSize);
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}
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return ptdDest;
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}
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/*
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* OleStdCopyFormatEtc()
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*
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* Purpose:
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* Copies the contents of a FORMATETC structure. this function takes
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* special care to copy correctly copying the pointer to the TARGETDEVICE
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* contained within the source FORMATETC structure.
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* if the source FORMATETC has a non-NULL TARGETDEVICE, then a copy
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* of the TARGETDEVICE will be allocated for the destination of the
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* FORMATETC (petcDest).
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*
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* OLE2NOTE: the caller MUST free the allocated copy of the TARGETDEVICE
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* within the destination FORMATETC when done with it
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* using the standard allocator returned from CoGetMalloc.
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* (OleStdFree can be used to free the copy).
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*
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* Parameters:
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* petcDest pointer to destination FORMATETC
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* petcSrc pointer to source FORMATETC
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*
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* Return Value:
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* returns TRUE is copy is successful; retuns FALSE if not successful
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*/
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STDAPI_(BOOL) OleStdCopyFormatEtc(LPFORMATETC petcDest, LPFORMATETC petcSrc)
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{
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if ((petcDest == NULL) || (petcSrc == NULL)) {
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return FALSE;
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}
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petcDest->cfFormat = petcSrc->cfFormat;
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petcDest->ptd = OleStdCopyTargetDevice(petcSrc->ptd);
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petcDest->dwAspect = petcSrc->dwAspect;
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petcDest->lindex = petcSrc->lindex;
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petcDest->tymed = petcSrc->tymed;
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return TRUE;
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}
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// returns 0 for exact match, 1 for no match, -1 for partial match (which is
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// defined to mean the left is a subset of the right: fewer aspects, null target
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// device, fewer medium).
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STDAPI_(int) OleStdCompareFormatEtc(FORMATETC FAR* pFetcLeft, FORMATETC FAR* pFetcRight)
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{
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BOOL bExact = TRUE;
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if (pFetcLeft->cfFormat != pFetcRight->cfFormat)
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return 1;
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else if (!OleStdCompareTargetDevice (pFetcLeft->ptd, pFetcRight->ptd))
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return 1;
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if (pFetcLeft->dwAspect == pFetcRight->dwAspect)
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// same aspects; equal
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;
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else if ((pFetcLeft->dwAspect & ~pFetcRight->dwAspect) != 0)
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// left not subset of aspects of right; not equal
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return 1;
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else
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// left subset of right
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bExact = FALSE;
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if (pFetcLeft->tymed == pFetcRight->tymed)
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// same medium flags; equal
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;
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else if ((pFetcLeft->tymed & ~pFetcRight->tymed) != 0)
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// left not subset of medium flags of right; not equal
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return 1;
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else
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// left subset of right
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bExact = FALSE;
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return bExact ? 0 : -1;
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}
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STDAPI_(BOOL) OleStdCompareTargetDevice
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(DVTARGETDEVICE FAR* ptdLeft, DVTARGETDEVICE FAR* ptdRight)
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{
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if (ptdLeft == ptdRight)
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// same address of td; must be same (handles NULL case)
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return TRUE;
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else if ((ptdRight == NULL) || (ptdLeft == NULL))
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return FALSE;
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else if (ptdLeft->tdSize != ptdRight->tdSize)
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// different sizes, not equal
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return FALSE;
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#ifdef WIN32
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else if (memcmp(ptdLeft, ptdRight, ptdLeft->tdSize) != 0)
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#else
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else if (_fmemcmp(ptdLeft, ptdRight, (int)ptdLeft->tdSize) != 0)
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#endif
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// not same target device, not equal
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return FALSE;
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return TRUE;
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}
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