Leadtools.WinForms Namespace > RasterThumbnailBrowser Class : OnKeyDown Method |
protected virtual void OnKeyDown( KeyEventArgs e )
'Declaration Protected Overridable Sub OnKeyDown( _ ByVal e As KeyEventArgs _ )
'Usage Dim instance As RasterThumbnailBrowser Dim e As KeyEventArgs instance.OnKeyDown(e)
protected virtual void OnKeyDown( KeyEventArgs e )
function Leadtools.WinForms.RasterThumbnailBrowser.OnKeyDown( e )
protected: virtual void OnKeyDown( KeyEventArgs^ e )
Raising an event invokes the event handler through a delegate.
The OnKeyDown 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 OnKeyDown in a derived class, be sure to call the base class's OnKeyDown method so that registered delegates receive the event.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2