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|
BOOL scr2png(LPCTSTR pszFileName)
{
HDC hdcMem;
HDC hdcScr;
HBITMAP hbmMem;
HBITMAP hbmOld;
HANDLE hFile;
BITMAPINFO bmi;
BITMAPFILEHEADER bfh;
BITMAPINFOHEADER bmih;
LPBYTE pPixels;
DWORD dwTmp;
UINT nScrX = GetSystemMetrics(SM_CXSCREEN);
UINT nScrY = GetSystemMetrics(SM_CYSCREEN);
hdcScr = GetDC(NULL);
hbmMem = CreateCompatibleBitmap(hdcScr, nScrX, nScrY);
hdcMem = CreateCompatibleDC(hdcScr);
hbmOld = (HBITMAP) SelectObject(hdcMem, hbmMem);
if(!StretchBlt(hdcMem, 0, 0, 255, 171, hdcScr, 0, 0, nScrX, nScrY,SRCCOPY))
goto Erreur;
bmih.biSize = sizeof(BITMAPINFOHEADER);
bmih.biWidth = 255; //nScrX; // 255;
bmih.biHeight = 171; //nScrY; //191;
bmih.biBitCount = GetDeviceCaps(hdcMem, BITSPIXEL);
bmih.biCompression = BI_RGB;
bmih.biPlanes = 1;
bmih.biSizeImage = 0;
bmih.biXPelsPerMeter = 0;
bmih.biYPelsPerMeter = 0;
bmih.biClrUsed = 0;
bmih.biClrImportant = 0;
bmi.bmiHeader = bmih;
if(!(pPixels = (LPBYTE) GlobalAlloc(GMEM_FIXED, bmih.biWidth * bmih.biHeight * (bmih.biBitCount / 8))))
goto Erreur;
if(!GetDIBits(hdcMem, hbmMem, 0, (WORD) bmih.biHeight, pPixels, &bmi, DIB_RGB_COLORS))
goto Erreur;
bfh.bfType = 0x4d42;
bfh.bfReserved1 = 0;
bfh.bfReserved2 = 0;
bfh.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);
bfh.bfSize = (DWORD) sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) +
bmih.biWidth * bmih.biHeight * (bmih.biBitCount / 8);
hFile = CreateFile(pszFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if(hFile == INVALID_HANDLE_VALUE)
goto Erreur;
if(!WriteFile(hFile, (LPVOID) &bfh, sizeof(BITMAPFILEHEADER), (LPDWORD) &dwTmp, NULL))
goto Erreur;
if(!WriteFile(hFile, (LPVOID) &bmih, sizeof(BITMAPINFOHEADER), (LPDWORD) &dwTmp, NULL))
goto Erreur;
if(!WriteFile(hFile, (LPVOID) pPixels, bmih.biWidth * bmih.biHeight * (bmih.biBitCount / 8), (LPDWORD) &dwTmp, NULL))
goto Erreur;
GlobalFree(pPixels);
CloseHandle(hFile);
SelectObject(hdcMem, hbmOld);
ReleaseDC(NULL, hdcScr);
DeleteDC(hdcMem);
return TRUE;
Erreur:
if(pPixels)
GlobalFree(pPixels);
if(hFile)
{
CloseHandle(hFile);
DeleteFile(pszFileName);
}
SelectObject(hdcMem, hbmOld);
ReleaseDC(NULL, hdcScr);
DeleteDC(hdcMem);
return FALSE;
}
int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, PSTR lpszArg, int iCmdShow)
{
scr2png("screen.png");
return 0;
} |
