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Bitmap bmp;
//bmp构建方法，根据具体情况构建Bitmap
......
CLSID pngClsid;
GetEncoderClsid(_T("image/bmp"), &pngClsid);
bmp.Save(strPic, &pngClsid, NULL);
//GetEncoderClsid函数的第一个参数是图片格式，"/"后面的为图片的后缀这里用到一个函数GetEncoderClsid，具体实现如下：
int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0; // number of image encoders
UINT size = 0; // size of the image encoder array in bytes
ImageCodecInfo* pImageCodecInfo = NULL;
GetImageEncodersSize(&num, &size);
if (size == 0)
return -1; // Failure
pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if (pImageCodecInfo == NULL)
return -1; // Failure
GetImageEncoders(num, size, pImageCodecInfo);
for (UINT j = 0; j < num; ++j)
{
if (wcscmp(pImageCodecInfo[j].MimeType, format) == 0)
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j; // Success
}
}
free(pImageCodecInfo);
return -1; // Failure
}