Called before a message is dispatched. You may return true if you wish to prevent the message from being dispatched.
[Visual Basic] Function PreFilterMessage( _ ByRef m As Message _ ) As Boolean [C#] bool PreFilterMessage( ref Message m ); [C++] bool PreFilterMessage( Message** m ) = 0; [JScript] function PreFilterMessage( m : Message ) : Boolean;
true to filter the message and prevent it from being dispatched, or false to allow the message to continue to the next filter/ control.
IMessageFilter Interface | IMessageFilter Members | System.WinForms Namespace