[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Controls' (#lcl)

TWinControl.WMDestroy

Handler for widget destroyed message; clears the Handle.

Declaration

Source position: controls.pp line 2221

protected procedure TWinControl.WMDestroy(

  var Message: TLMDestroy

); message;

Arguments

Message

  

LM_DESTROY window message which triggered the handler.

Description

Sets Handle to the unassigned value (0) when the windowed control no longer exists.

Version 4.0 Generated 2025-05-03 Home