Vcl.ActnCtrls.TCustomButtonControl.MouseDown

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Delphi

procedure MouseDown(Button: TMouseButton; Shift: TShiftState;  X, Y: Integer); override;

C++

DYNAMIC void __fastcall MouseDown(System::Uitypes::TMouseButton Button, System::Classes::TShiftState Shift, int X, int Y);

Properties

Type Visibility Source Unit Parent
procedure
function
protected
Vcl.ActnCtrls.pas
Vcl.ActnCtrls.hpp
Vcl.ActnCtrls TCustomButtonControl

Description

OnMouseDown event dispatcher.

A control calls MouseDown in response to any of the Windows mouse-down messages (WM_LBUTTONDOWN, WM_MBUTTONDOWN, WM_RBUTTONDOWN), decoding the message parameters into the shift key state and position, which it passes in the Shift, X, and Y parameters, respectively. The value of the Button parameter indicates which mouse button was pressed: left, right, or middle.

The Button parameter determines which mouse button the user pressed. Shift indicates which shift keys (SHIFT, CTRL, or ALT) were down when the user pressed the mouse button. X and Y are the pixel coordinates of the mouse pointer within the client area of the control.

See Also