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

TWinControl.WndProc

Adds special handling for focus and input messages, and notifies the DockManager.

Declaration

Source position: controls.pp line 2314

protected procedure TWinControl.WndProc(

  var Message: TLMessage

); override;

Arguments

Message

  

Message examined and handled in the method.

Description

Handles the following messages:

LM_SETFOCUS
Gets the parent form and show this control as focused
LM_KILLFOCUS
Removes focus from this control
LM_NCHITTEST
Checks the transparency for the control, etc.
Mouse messages
Sent to the DockManager (when used).
CM_THEMECHANGED
Broadcasts the message received for a theme change event.

Version info

Modified in LCL version 3.6 to handle CM_THEMECHANGED messages.

See also

TControl.WndProc

  

The general message handler for this control.
Version 4.0 Generated 2025-05-03 Home