【转载请注明出处: http://blog.csdn.net/lzl124631x】
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接口
BOOL BitBlt(
_In_ HDC hdcDest,
_In_ int...BitBlt(hdc,0,0,1000,1000,buf_hdc,0,0,SRCCOPY);
当某一维小于图片尺寸的时候,图片被剪裁
BitBlt(hdc,0,0,1000,180,buf_hdc,...0,0,SRCCOPY);
nXSrc和nYSrc决定了从源HDC的哪个点开始截取图
BitBlt(hdc,0,0,550,342,buf_hdc,100,100,SRCCOPY);
当nXSrc...和nYSrc为负数的时候
BitBlt(hdc,0,0,550,342,buf_hdc,-100,-100,SRCCOPY);
nXDest和nYDest决定了从目标HDC的哪个点开始贴图...BitBlt(hdc,100,100,550,342,buf_hdc,0,0,SRCCOPY);
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参数dwRop的含义
background: 640×400
foreground