CImage有Attach函数来载入内存图片HBITMAP   但是GDI+的Image类却不能载入和写出HBITMAP  怎么载入写出啊?  貌似GDI+的类只能载这四种格式的Image(
        IN const WCHAR* filename,
        IN BOOL useEmbeddedColorManagement = FALSE
    );    Image(
        IN IStream* stream,
        IN BOOL useEmbeddedColorManagement = FALSE
    );    static Image* FromFile(
        IN const WCHAR* filename,
        IN BOOL useEmbeddedColorManagement = FALSE
    );    static Image* FromStream(
        IN IStream* stream,
        IN BOOL useEmbeddedColorManagement = FALSE
    );