Filter. Pre Filter Message(Message) Method
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Filters out a message before it is dispatched.
public: bool PreFilterMessage(System::Windows::Forms::Message % m);
public bool PreFilterMessage (ref System.Windows.Forms.Message m);
abstract member PreFilterMessage : Message -> bool
Public Function PreFilterMessage (ByRef m As Message) As Boolean
The message to be dispatched. You cannot modify this message.
true to filter the message and stop it from being dispatched;
false to allow the message to continue to the next filter or control.
Use PreFilterMessage to filter out a message before it is dispatched to a control or form. For example, to stop the Click event of a Button control from being dispatched to the control, you implement the PreFilterMessage method and return a
true value when the Click message occurs. You can also use this method to perform code work that you might need to do before the message is dispatched.