Function LoadImageEx

src/ConEmu/LoadImg.cpp:643–699

}

BITMAPFILEHEADER* LoadImageEx(LPCWSTR asImgPath, BY_HANDLE_FILE_INFORMATION& inf)
{
	BITMAPFILEHEADER* pBkImgData = nullptr;
	HANDLE hFile = CreateFile(asImgPath, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, nullptr);

	if (hFile != INVALID_HANDLE_VALUE)
	{
		BOOL lbIsBmpFile = FALSE, lbFileIsValid = FALSE;

		if (GetFileInformationByHandle(hFile, &inf) && inf.nFileSizeHigh == 0
		        && inf.nFileSizeLow >= (sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFO))) //-V119
		{
			lbFileIsValid = TRUE;

			BYTE bm[2];
			DWORD nRead;
			if (ReadFile(hFile, bm, sizeof(bm), &nRead, nullptr) && nRead == 2 && (bm[0] == 'B' && bm[1] == 'M'))
			{
				lbIsBmpFile = TRUE;

				pBkImgData = (BITMAPFILEHEADER*)malloc(inf.nFileSizeLow);
				if (!pBkImgData)
				{
					_ASSERTE(pBkImgData!=nullptr);
					CloseHandle(hFile);
					return nullptr;
				}
				BYTE *pBuf = (BYTE*)pBkImgData;
				memmove(pBkImgData, bm, sizeof(bm));

				if (pBkImgData && ReadFile(hFile, pBuf+sizeof(bm), inf.nFileSizeLow-sizeof(bm), &inf.nFileSizeLow, nullptr))
				{
					inf.nFileSizeLow += sizeof(bm); // BM

					if (pBuf[0] == 'B' && pBuf[1] == 'M' && *(uint32_t*)(pBuf + 0x0A) >= 0x36 && *(uint32_t*)(pBuf + 0x0A) <= 0x436 && *(uint32_t*)(pBuf + 0x0E) == 0x28 && !pBuf[0x1D] && !*(uint32_t*)(pBuf + 0x1E))
					{
						// OK
					}
					else
					{
						free(pBkImgData);
						pBkImgData = nullptr;
					}
				}
			}
		}
		CloseHandle(hFile);

		if (!pBkImgData && lbFileIsValid && !lbIsBmpFile)
		{
			// Если это не BMP - попытаться через GDI+
			pBkImgData = LoadImageGdip(asImgPath);
		}
	}

	return pBkImgData;
}