畫了一下午的時間總算在mobile上儲存了圖片。

BOOL SaveDcToBMP(HDC m_hdcMem) { BOOL bReturn = TRUE; HANDLE hFile = NULL; //handle of bitmap file which will be saved DWORD dwWritten = 0; //written count DWORD dwOffsetSize = 0; DWORD dwBufferSize = 0; WORD wBitCount = 32; //點陣圖中每個畫素所佔位元組數 HBITMAP hbitmapSave = NULL; HBITMAP hbitmapOld = NULL; HDC hDcDev = NULL; HDC hDcMem = NULL; BYTE *pBmpBuffer = NULL; int iBits = 0; BITMAP stSrcbmp; BITMAPINFO srcdibbmap; BITMAPFILEHEADER bmFileHeader; //點陣圖檔案頭結構 SecureZeroMemory(&stSrcbmp, sizeof(BITMAP)); SecureZeroMemory(&srcdibbmap, sizeof(BITMAPINFO)); SecureZeroMemory(&bmFileHeader, sizeof(BITMAPFILEHEADER)); // Fill bitmap information constructor srcdibbmap.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); srcdibbmap.bmiHeader.biWidth = WVGA_WIDTH; srcdibbmap.bmiHeader.biHeight = WVGA_HIGHT; srcdibbmap.bmiHeader.biPlanes = 1; srcdibbmap.bmiHeader.biBitCount = wBitCount; srcdibbmap.bmiHeader.biCompression = BI_RGB; hDcMem = CreateCompatibleDC(NULL); if (NULL == hDcMem) { bReturn = FALSE; goto Exit; } hbitmapSave = CreateDIBSection(hDcMem, &srcdibbmap, DIB_RGB_COLORS, (void**)&pBmpBuffer, NULL, 0); if (NULL == hbitmapSave) { bReturn = FALSE; goto Exit; } hbitmapOld = (HBITMAP)SelectObject(hDcMem, hbitmapSave); if (NULL == hbitmapOld) { bReturn = FALSE; goto Exit; } //將傳進來的DC畫到定義的記憶體DC上去 if(!StretchBlt(hDcMem, 0, 0, WVGA_WIDTH, WVGA_HIGHT, m_hdcMem, 0, 0, m_iScaleWidth, m_iScaleHight, SRCCOPY)) { bReturn = FALSE; goto Exit; } if (0 == GetObject(hbitmapSave, sizeof(stSrcbmp), &stSrcbmp)) { bReturn = FALSE; goto Exit; } dwBufferSize = stSrcbmp.bmWidth * stSrcbmp.bmHeight * wBitCount / 8; dwOffsetSize = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER); // Fill bitmap header constructor bmFileHeader.bfType = 0x4D42; bmFileHeader.bfSize = dwOffsetSize + dwBufferSize; bmFileHeader.bfReserved1 = 0; bmFileHeader.bfReserved2 = 0; bmFileHeader.bfOffBits = dwOffsetSize; hFile = CreateFile(m_wszPicPath, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); if (INVALID_HANDLE_VALUE == hFile) { bReturn = FALSE; goto Exit; } if (!WriteFile(hFile, &bmFileHeader, sizeof(BITMAPFILEHEADER), &dwWritten, NULL)) { bReturn = FALSE; goto Exit; } if (!WriteFile(hFile, &srcdibbmap, sizeof(BITMAPINFO), &dwWritten, NULL)) { bReturn = FALSE; goto Exit; } if (!WriteFile(hFile, pBmpBuffer, dwBufferSize, &dwWritten, NULL)) { bReturn = FALSE; goto Exit; } bReturn = TRUE; Exit: if (INVALID_HANDLE_VALUE != hFile) { CloseHandle(hFile); hFile = INVALID_HANDLE_VALUE; } return bReturn; }