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ComboBox.OnMeasureItem Method

Raises the MeasureItem event.

[Visual Basic]
Protected Overridable Sub OnMeasureItem( _
   ByVal e As MeasureItemEventArgs _
protected virtual void OnMeasureItem(
 MeasureItemEventArgs e
protected: virtual void OnMeasureItem(
 MeasureItemEventArgs* e
protected function OnMeasureItem(
   e : MeasureItemEventArgs


The MeasureItemEventArgs that was raised.


This method is called each time an owner-drawn ComboBox item needs to be drawn and before OnDrawItem is called. For more information, see MeasureItem.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The OnMeasureItem method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors:  When overriding OnMeasureItem in a derived class, be sure to call the base class's OnMeasureItem method so that registered delegates receive the event.


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

ComboBox Class | ComboBox Members | System.Windows.Forms Namespace | MeasureItemEventArgs | MeasureItem