ProcessKeyEventArgs Method

In This Topic

Processes a key message and generates the appropriate control events.

Syntax

Visual Basic
C#

'Declaration
 
Protected Overrides Function ProcessKeyEventArgs( _
   ByRef m As Message _
) As Boolean

'Usage
 
Dim instance As GcComboBox
Dim m As Message
Dim value As Boolean
 
value = instance.ProcessKeyEventArgs(m)

protected override bool ProcessKeyEventArgs( 
   ref Message m
)

Parameters

m: A System.Windows.Forms.Message, passed by reference, that represents the window message to process.

Return Value

true if the message was processed by the control; otherwise, false.

Remarks

This method is called when a control receives a keyboard message. The method is responsible for generating the appropriate key events for the message by calling the System.Windows.Forms.Control.OnKeyPress(System.Windows.Forms.KeyPressEventArgs), System.Windows.Forms.Control.OnKeyDown(System.Windows.Forms.KeyEventArgs), or System.Windows.Forms.Control.OnKeyUp(System.Windows.Forms.KeyEventArgs) methods. The m parameter contains the window message that must be processed. Possible values for the System.Windows.Forms.Message.Msg property are WM_CHAR, WM_KEYDOWN, WM_SYSKEYDOWN, WM_KEYUP, WM_SYSKEYUP, and WM_IME_CHAR.

Notes to Inheritors:

When overriding the ProcessKeyEventArgs method in a derived class, a control should return true to indicate that it has processed the key. For keys that are not processed by the control, the result of calling the base class's ProcessKeyEventArgs method should be returned. Controls will seldom, if ever, need to override this method.

Reference

GcComboBox Class
GcComboBox Members

Product Support Forum | Print this page