public static extern uint EdsSaveImage( IntPtr inImageRef, EdsTargetImageType inImageType,
EdsSaveImageSetting inSaveSetting, IntPtr outStreamRef );
public static extern uint EdsGetImage( IntPtr inImageRef, EdsImageSource inImageSource,
EdsTargetImageType inImageType, EdsRect inSrcRect, EdsSize inDstSize, IntPtr outStreamRef );