ComboBox.OnDrawItem(DrawItemEventArgs) Method

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Raises the DrawItem event.

protected:
 virtual void OnDrawItem(System::Windows::Forms::DrawItemEventArgs ^ e);

protected virtual void OnDrawItem (System.Windows.Forms.DrawItemEventArgs e);

abstract member OnDrawItem : System.Windows.Forms.DrawItemEventArgs -> unit
override this.OnDrawItem : System.Windows.Forms.DrawItemEventArgs -> unit

Protected Overridable Sub OnDrawItem (e As DrawItemEventArgs)

Parameters

e

DrawItemEventArgs

A DrawItemEventArgs that contains the event data.

Remarks

This method is called each time an owner-drawn ComboBox item needs to be drawn and after OnMeasureItem is called. For more information, see DrawItem.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnDrawItem 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 OnDrawItem(DrawItemEventArgs) in a derived class, be sure to call the base class's OnDrawItem(DrawItemEventArgs) method so that registered delegates receive the event.

See also

• DrawItemEventArgs
• DrawItem