Delegate WidgetClassData.MeasureCallback
public delegate void WidgetClassData.MeasureCallback(IntPtr widget, Orientation orientation, int forSize, out int minimum, out int natural, out int minimumBaseline, out int naturalBaseline)
public delegate void WidgetClassData.MeasureCallback(IntPtr widget, Orientation orientation, int forSize, out int minimum, out int natural, out int minimumBaseline, out int naturalBaseline)