CImage 缩放图片

BOOL CreateStretchImage(const CImage &src, CImage &dest, int stretchWidth, int stretchHeight)
{
    if (src.IsDIBSection())
    {
        dest.Create(stretchWidth, stretchHeight, 32);

        HDC destDC = dest.GetDC();
        ::SetStretchBltMode(destDC, HALFTONE);
        src.StretchBlt(destDC, 0, 0, stretchWidth, stretchHeight);
        dest.ReleaseDC();
        return TRUE;
    }
    return FALSE;
}