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

TCustomTreeView.WMLButtonDown

Handles the LM_LBUTTONDOWN message for the control.

Declaration

Source position: comctrls.pp line 3617

protected procedure TCustomTreeView.WMLButtonDown(

  var AMessage: TLMLButtonDown

); message;

Arguments

AMessage

  

Window message examined in the method.

Description

WMLButtonDown ensures that the States property is updated to include tvsDragged for the Left mouse button message. It calls the inherited method prior to exit to update MouseCapture and Click events for the control.

See also

TControl.WMLButtonDown

  

Handles a LM_LBUTTONDOWN (left mouse button down) message for the control.

Version 3.2 Generated 2024-02-25 Home