转换图像格式,A2W,复制图片到剪贴板,从剪贴板取位图,是否有此进程,取文件部分,GdiplusStartup,GdiplusShutdown,MultiByteToWideChar,GdipLoadImageFromFile,GdipSaveImageToFile,CLSIDFromString,GdipDisposeImage,CreateStreamOnHGlobal,GetHGlobalFromStrea