API capte l'écran

Question

Salut,
 Je cherche une fonction API qui capte le contenu de l'écran.

Polykos · Answer

Tiens mets ce code avec filename le nom de ton fichier où sera enregistrer ta capture d'écran

Sous Visual C++ met doit fonctionner sur Borland c++

void ScreenCapture(char* filename)
{

   // prepare DCs, bitmaps,..
   HDC hScreenDC = GetWindowDC(0);
   HDC hmemDC = CreateCompatibleDC(hScreenDC);   
   int ScreenWidth = GetDeviceCaps(hScreenDC, HORZRES);
   int ScreenHeight = GetDeviceCaps(hScreenDC, VERTRES);
   HBITMAP hmemBM = CreateCompatibleBitmap(hScreenDC, ScreenWidth, ScreenHeight);
   SelectObject(hmemDC, hmemBM);

   // copy screen to memory DC
   BitBlt(hmemDC, 0, 0, ScreenWidth, ScreenHeight, hScreenDC, 0, 0, SRCCOPY);

   // allocate and lock memory for the bitmap data
   HGLOBAL hpxldata = GlobalAlloc(GMEM_FIXED, ScreenWidth * ScreenHeight * 3);
   void FAR* lpvpxldata = GlobalLock(hpxldata);

   // fill .bmp - structures
   BITMAPINFO bmInfo;
   bmInfo.bmiHeader.biSize = 40;
   bmInfo.bmiHeader.biWidth = ScreenWidth;
   bmInfo.bmiHeader.biHeight = ScreenHeight;
   bmInfo.bmiHeader.biPlanes = 1;
   bmInfo.bmiHeader.biBitCount = 24;
   bmInfo.bmiHeader.biCompression = 0;
   bmInfo.bmiHeader.biSizeImage = 0;
   bmInfo.bmiHeader.biXPelsPerMeter = 0;
   bmInfo.bmiHeader.biYPelsPerMeter = 0;
   bmInfo.bmiHeader.biClrUsed = 0;
   bmInfo.bmiHeader.biClrImportant = 0;

   BITMAPFILEHEADER bmFileHeader;
   bmFileHeader.bfType = 19778;
   bmFileHeader.bfSize = (ScreenWidth * ScreenHeight * 3) + 40 + 14;
   bmFileHeader.bfReserved1 = 0;
   bmFileHeader.bfReserved2 = 0;
   bmFileHeader.bfOffBits = 54;

   // copy bitmap data into global memory
   GetDIBits(hmemDC, hmemBM, 0, ScreenHeight, lpvpxldata, &bmInfo, DIB_RGB_COLORS);

   // open file and write data
   int bmfile = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IWRITE);
   write(bmfile, &bmFileHeader, 14);
   write(bmfile, &bmInfo, 40);
   write(bmfile, lpvpxldata, ScreenWidth * ScreenHeight * 3);

   // clean up
   close(bmfile);
   GlobalUnlock(hpxldata);
   GlobalFree(hpxldata);
   DeleteObject(hmemBM);
   DeleteDC(hmemDC);
   ReleaseDC(0, hScreenDC);
}

API capte l'écran

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