rtlres.c File Reference

#include "precomp.h"

Go to the source code of this file.

Defines
#define	BITMAPFILEHEADER_SIZE   14
#define	MINHEADERS_SIZE   (BITMAPFILEHEADER_SIZE + sizeof(BITMAPCOREHEADER))
Functions
HICON	IconFromBestImage (ICONFILEHEADER *pifh, LPNEWHEADER lpnhSrc, int cxDesired, int cyDesired, UINT LR_flags)
int	LoadStringOrError (HANDLE hModule, UINT wID, LPWSTR lpBuffer, int cchBufferMax, WORD wLangId)
HANDLE	RtlLoadObjectFromDIBFile (LPCWSTR lpszName, LPWSTR type, DWORD cxDesired, DWORD cyDesired, UINT LR_flags)

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Define Documentation

#define BITMAPFILEHEADER_SIZE   14

Definition at line 139 of file rtlres.c. Referenced by RtlLoadObjectFromDIBFile().

#define MINHEADERS_SIZE   (BITMAPFILEHEADER_SIZE + sizeof(BITMAPCOREHEADER))

Definition at line 140 of file rtlres.c. Referenced by RtlLoadObjectFromDIBFile().

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Function Documentation

HICON IconFromBestImage (  ICONFILEHEADER *  pifh, LPNEWHEADER  lpnhSrc, int  cxDesired, int  cyDesired, UINT  LR_flags )

Definition at line 396 of file rtlres.c. References CreateIconFromResourceEx(), DWORD, gpsi, LookupIconIdFromDirectoryEx(), NULL, PBYTE, UINT, UserLocalAlloc, and UserLocalFree. Referenced by RtlLoadObjectFromDIBFile(). { UINT iImage; UINT iImageBest; LPNEWHEADER lpnhDst; LPRESDIR lprd; LPBYTE lpRes; DWORD cbDIB; HICON hIcon = NULL; IMAGEFILEHEADER *pimh; if (lpnhSrc->ResCount > 1) { /* * First, alloc dummy group resource. */ lpnhDst = (LPNEWHEADER)UserLocalAlloc(0, sizeof(NEWHEADER) + (lpnhSrc->ResCount * sizeof(RESDIR))); if (lpnhDst == NULL) goto Done; *lpnhDst = *lpnhSrc; lprd = (LPRESDIR)(lpnhDst + 1); /* * Build up an image directory from the file's image header info. */ for (pimh = pifh->imh, iImage=0; iImage < lpnhDst->ResCount; iImage++, lprd++, pimh++) { /* * Fill in RESDIR */ lprd->Icon.Width = pimh->cx; lprd->Icon.Height = pimh->cy; if (lpnhDst->ResType == IMAGE_ICON) lprd->Icon.ColorCount = pimh->nColors; /* * NOTE: These aren't used in the "GetBestImage" process. So * stick in random stuff. */ lprd->Planes = gpsi->Planes; lprd->BitCount = gpsi->BitCount; lprd->BytesInRes = pimh->cbDIB; /* * Make fake ID: the index of the image. */ lprd->idIcon = (WORD)iImage; } /* * Find the best image in the group */ iImageBest = LookupIconIdFromDirectoryEx((PBYTE)lpnhDst, (lpnhDst->ResType == IMAGE_ICON), cxDesired, cyDesired, LR_flags); /* * Get rid of fake group resource */ UserLocalFree(lpnhDst); } else { iImageBest = 0; } /* * Point to selected image. */ pimh = &pifh->imh[iImageBest]; cbDIB = pimh->cbDIB; /* * If we're creating a cursor, we have to whack in HOTSPOT in front * Regardless of which type we are making, we need to make sure * the resource is aligned. Thus we always copy. */ if (lpnhSrc->ResType == IMAGE_CURSOR) cbDIB += sizeof(POINTS); lpRes = (LPBYTE)UserLocalAlloc(0, cbDIB); if (lpRes == NULL) goto Done; if (lpnhSrc->ResType == IMAGE_CURSOR) lpRes += sizeof(POINTS); RtlCopyMemory(lpRes, ((LPBYTE)pifh) + pimh->offsetDIB, pimh->cbDIB); if (lpnhSrc->ResType == IMAGE_CURSOR) { lpRes -= sizeof(POINTS); ((LPPOINTS)lpRes)->x = pimh->xHotSpot; ((LPPOINTS)lpRes)->y = pimh->yHotSpot; } hIcon = CreateIconFromResourceEx(lpRes, cbDIB, (lpnhSrc->ResType == IMAGE_ICON), 0x00030000, // was WIN32VER40 cxDesired, cyDesired, LR_flags); UserLocalFree(lpRes); Done: return hIcon; }

int LoadStringOrError (  HANDLE  hModule, UINT  wID, LPWSTR  lpBuffer, int  cchBufferMax, WORD  wLangId )

Definition at line 37 of file rtlres.c. References FINDRESOURCEEXW, LOADRESOURCE, LOCKRESOURCE, NULL, TRUE, UNLOCKRESOURCE, USHORT, and UTCHAR. { HANDLE hResInfo; HANDLE hStringSeg; LPTSTR lpsz; int cch; /* * Make sure the parms are valid. */ if (lpBuffer == NULL) { RIPMSG0(RIP_WARNING, "LoadStringOrError: lpBuffer == NULL"); return 0; } cch = 0; /* * String Tables are broken up into 16 string segments. Find the segment * containing the string we are interested in. */ if (hResInfo = FINDRESOURCEEXW(hModule, (LPTSTR)ULongToPtr( ((LONG)(((USHORT)wID >> 4) + 1)) ), RT_STRING, wLangId)) { /* * Load that segment. */ hStringSeg = LOADRESOURCE(hModule, hResInfo); /* * Lock the resource. */ if (lpsz = (LPTSTR)LOCKRESOURCE(hStringSeg, hModule)) { /* * Move past the other strings in this segment. * (16 strings in a segment -> & 0x0F) */ wID &= 0x0F; while (TRUE) { cch = *((UTCHAR *)lpsz++); // PASCAL like string count // first UTCHAR is count if TCHARs if (wID-- == 0) break; lpsz += cch; // Step to start if next string } /* * chhBufferMax == 0 means return a pointer to the read-only resource buffer. */ if (cchBufferMax == 0) { *(LPTSTR *)lpBuffer = lpsz; } else { /* * Account for the NULL */ cchBufferMax--; /* * Don't copy more than the max allowed. */ if (cch > cchBufferMax) cch = cchBufferMax; /* * Copy the string into the buffer. */ RtlCopyMemory(lpBuffer, lpsz, cch*sizeof(WCHAR)); } /* * Unlock resource, but don't free it - better performance this * way. */ UNLOCKRESOURCE(hStringSeg, hModule); } } /* * Append a NULL. */ if (cchBufferMax != 0) { lpBuffer[cch] = 0; } return cch; }

HANDLE RtlLoadObjectFromDIBFile (  LPCWSTR  lpszName, LPWSTR  type, DWORD  cxDesired, DWORD  cyDesired, UINT  LR_flags )

Definition at line 142 of file rtlres.c. References BFT_BITMAP, BITMAPFILEHEADER_SIZE, BitmapSize, BOOL, ConvertDIBBitmap(), cy, DWORD, FALSE, FILEINFO, IconFromBestImage(), INVALID_HANDLE_VALUE, LoadCursorIconFromFileMap(), MAX_PATH, MINHEADERS_SIZE, NULL, OPEN_EXISTING, _FILEINFO::pFileEnd, _FILEINFO::pFileMap, _FILEINFO::pFilePtr, _FILEINFO::pszName, PTR_TO_ID, szFile, type, UPBITMAPCOREHEADER, and UPBITMAPINFOHEADER. Referenced by ObjectFromDIBResource(). { FILEINFO fi = { NULL, NULL, NULL }; HANDLE hFile; HANDLE hFileMap = NULL; HANDLE hObj = NULL; TCHAR szFile[MAX_PATH]; TCHAR szFile2[MAX_PATH]; LPWSTR pszFileDummy; if (LR_flags & LR_ENVSUBST) { /* * Do any %% string substitutions. We need this feature to handle * loading custom cursors and icons from the registry which uses * %SystemRoot% in the paths. It also makes the shell's job * easier. */ ExpandEnvironmentStrings(lpszName, szFile2, MAX_PATH); } else { lstrcpy(szFile2, lpszName); } if (SearchPath(NULL, // use default search locations szFile2, // file name to search for NULL, // already have file name extension MAX_PATH, // how big is that buffer, anyway? szFile, // stick fully qualified path name here &pszFileDummy) == 0) { RIPERR0(ERROR_FILE_NOT_FOUND, RIP_VERBOSE, ""); return NULL; } /* * Open File for reading. */ hFile = CreateFileW(szFile, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL); if (hFile == INVALID_HANDLE_VALUE) goto Done; /* * Create file-mapping for the file in question. */ hFileMap = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL); if (hFileMap == NULL) goto CloseDone; /* * Map the file into view. */ fi.pFileMap = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 0); if (fi.pFileMap == NULL) goto CloseDone; fi.pFileEnd = fi.pFileMap + GetFileSize(hFile, NULL); fi.pFilePtr = fi.pFileMap; fi.pszName = szFile; try { switch(PTR_TO_ID(type)) { case PTR_TO_ID(RT_BITMAP): { LPBITMAPFILEHEADER pBFH; UPBITMAPINFOHEADER upBIH; LPBYTE lpBits; DWORD cx; DWORD cy; WORD planes; WORD bpp; DWORD cbSizeImage = 0; DWORD cbSizeFile; DWORD cbSizeBits; /* * Set the BitmapFileHeader and BitmapInfoHeader pointers. */ pBFH = (LPBITMAPFILEHEADER)fi.pFileMap; upBIH = (UPBITMAPINFOHEADER)(fi.pFileMap + BITMAPFILEHEADER_SIZE); /* * Are we dealing with a bitmap file. */ if (pBFH->bfType != BFT_BITMAP) break; /* * We need to check the filesize against the potential size of * the image. Bad-Bitmaps would otherwise be able to slam us * if they lied about the size (and/or) the file is truncated. */ if (upBIH->biSize == sizeof(BITMAPCOREHEADER)) { cx = ((UPBITMAPCOREHEADER)upBIH)->bcWidth; cy = ((UPBITMAPCOREHEADER)upBIH)->bcHeight; bpp = ((UPBITMAPCOREHEADER)upBIH)->bcBitCount; planes = ((UPBITMAPCOREHEADER)upBIH)->bcPlanes; } else { cx = upBIH->biWidth; cy = upBIH->biHeight; bpp = upBIH->biBitCount; planes = upBIH->biPlanes; if(upBIH->biSizeImage >= sizeof(BITMAPINFOHEADER)) cbSizeImage = upBIH->biSizeImage; } cbSizeFile = (DWORD)(fi.pFileEnd - fi.pFileMap); cbSizeBits = BitmapSize(cx, cy, planes, bpp); if ((!cbSizeImage && ((cbSizeFile - MINHEADERS_SIZE) < cbSizeBits)) || (cbSizeImage && ((cbSizeFile - MINHEADERS_SIZE) < cbSizeImage))) { break; } /* * Get the bits-offset in the file. */ if ((pBFH->bfOffBits >= (sizeof(BITMAPFILEHEADER) + sizeof(BITMAPCOREHEADER))) && (pBFH->bfOffBits <= (cbSizeFile - cbSizeImage))) { lpBits = ((LPBYTE)upBIH) + pBFH->bfOffBits - sizeof(BITMAPFILEHEADER); } else { lpBits = NULL; } /* * Convert the dib-on-file to a bitmap-handle. This can * convert both CORE and INFO formats. */ hObj = ConvertDIBBitmap(upBIH, cxDesired, cyDesired, LR_flags, NULL, &lpBits); // use these bits! } break; case PTR_TO_ID(RT_CURSOR): case PTR_TO_ID(RT_ICON): { RTAG *prtag; ICONFILEHEADER *pifh; /* * Is this a RIFF file? */ prtag = (RTAG *)fi.pFileMap; if (prtag->ckID != FOURCC_RIFF) { NEWHEADER nh; pifh = (ICONFILEHEADER *)fi.pFileMap; /* * BUG?: looks like we can load icons as cursors and cursors * as icons. Does this work? Is this desired? (SAS) */ if ((pifh->iReserved != 0) || ((pifh->iResourceType != IMAGE_ICON) && (pifh->iResourceType != IMAGE_CURSOR)) || (pifh->cresIcons < 1)) break; nh.ResType = ((type == RT_ICON) ? IMAGE_ICON : IMAGE_CURSOR); nh.ResCount = pifh->cresIcons; nh.Reserved = 0; /* * Get the size of the sucker and meanwhile seek the file pointer * to point at the DIB we want. Files that have more than one * icon/cursor are treated like a group. In other words, * each image is treated like an individual element in the res * dir. So we need to pick the best fit one... */ hObj = IconFromBestImage(pifh, &nh, cxDesired, cyDesired, LR_flags); } else { BOOL fAni; hObj = LoadCursorIconFromFileMap(&fi, &type, cxDesired, cyDesired, LR_flags, &fAni); } } break; default: UserAssert(FALSE); break; } // switch } except (W32ExceptionHandler(FALSE, RIP_WARNING)) { hObj = NULL; } CloseDone: if (fi.pFileMap != NULL) UnmapViewOfFile(fi.pFileMap); if (hFileMap) CloseHandle(hFileMap); if (hFile && (hFile != INVALID_HANDLE_VALUE)) CloseHandle(hFile); Done: #if DBG if (hObj == NULL) { RIPMSG1(RIP_WARNING, "RtlLoadObjectFromDIBFile: Couldn't read resource from %ws", lpszName); } #endif return hObj; }

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