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( _In_ HDC hdcDest, _In_ int nXDest, _In_ int nYDest, _In_ int nWidth, _In_ int nHeight, _In_ HDC hdcSrc, _In_ int nXSrc, _In_ int nYSrc, _In_ DWORD dwRop );
Parameters
- hdcDest [in]
- A handle to the destination device context.
- nXDest [in]
- The x-coordinate, in logical units, of the upper-left corner of the destination rectangle.윈도우에서의 이미지의 x좌표
- nYDest [in]
- The y-coordinate, in logical units, of the upper-left corner of the destination rectangle.윈도우에서의 이미지의 y좌표
- nWidth [in]
- The width, in logical units, of the source and destination rectangles.nXSrc로 부터 nWidth만큼
- nHeight [in]
- The height, in logical units, of the source and the destination rectangles.nYSrc로 부터 nHeight만큼
- hdcSrc [in]
- A handle to the source device context.
- nXSrc [in]
- The x-coordinate, in logical units, of the upper-left corner of the source rectangle.이미지 (0,0)을 기준으로 x좌료
- nYSrc [in]
- The y-coordinate, in logical units, of the upper-left corner of the source rectangle.이미지 (0,0)을 기준으로 y좌표
- dwRop [in]
- A raster-operation code. These codes define how the color data for the source rectangle is to be combined with the color data for the destination rectangle to achieve the final color.The following list shows some common raster operation codes.
http://msdn.microsoft.com/en-us/library/windows/desktop/dd183370(v=vs.85).aspx
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