Bitblt

The BitBlt function performs a bit-block transfer of the color data corresponding to a rectangle of pixels from the specified source device context into a destination device context.

BOOL BitBlt(  HDC hdcDest, // handle to destination DC  int nXDest,
 // x-coord of destination upper-left corner 
 int nYDest,  // y-coord of destination upper-left corner  
int nWidth,  // width of destination rectangle 
 int nHeight, // height of destination rectangle  
HDC hdcSrc,  // handle to source DC 
 int nXSrc,   // x-coordinate of source upper-left corner
 int nYSrc,   // y-coordinate of source upper-left corner
 DWORD dwRop  // raster operation code);