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

TWinControl.CMEnabledChanged

Handler signalled when the Enabled property has been changed.

Declaration

Source position: controls.pp line 2209

protected procedure TWinControl.CMEnabledChanged(

  var Message: TLMessage

); message;

Arguments

Message

  

CM_ENABLEDCHANGED control message which triggered the handler.

Description

If the control is not Enabled and has a Parent control, the RemoveFocus method is called to defocus the control on its Parent form. If the window Handle has been allocated for the control, the EnableWindow routine in the LCL interface is called to set the enabled state for the handle.

CMEnabledChanged calls the inherited method prior to exit to Invalidate the control.

See also

TWinControl.RemoveFocus

  

Notifies the parent Form when the control cannot be focused.

TControl.Enabled

  

Determines whether the control responds to mouse or keyboard input.

TControl.CMEnabledChanged

  

Handles a CM_ENABLEDCHANGED message for the control.

TControl.Invalidate

  

Causes a delayed Repaint of the control by marking its visible area of the control as invalid.

Version 3.2 Generated 2024-02-25 Home