Occurs when a visual aspect of an owner-drawn System.Windows.Forms.ComboBox changes.
This event is used by an owner-drawn System.Windows.Forms.ComboBox. You can use this event to perform the tasks needed to draw items in the System.Windows.Forms.ComboBox. If you have a variable sized item (when the ComboBox.DrawMode property is set to the OwnerDrawVariable value of System.Windows.Forms.DrawMode), before drawing an item, the ComboBox.MeasureItem event is raised. You can create an event handler for the ComboBox.MeasureItem event to specify the size for the item that you are going to draw in your event handler for the ComboBox.DrawItem event.
For more information about handling events, see Consuming Events.