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

TControl.AddHandlerOnKeyDown

Adds the specified OnKeyDown event handler.

Declaration

Source position: controls.pp line 1770

public procedure TControl.AddHandlerOnKeyDown(

  const OnKeyDownEvent: TKeyEvent;

  AsFirst: Boolean = False

);

Arguments

OnKeyDownEvent

  

TKeyEvent handler routine added to the chtOnKeyDown handler type.

AsFirst

  

True if the routine is inserted as the first handler in the list of handlers for the chtOnKeyDown type. False if the routine is appended to the list.

Version 4.0 Generated 2025-05-03 Home