FMX.Controls.TControl.MouseDown

• Up to Parent: TControl

Delphi

procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Single); virtual;

C++

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

Properties

Type	Visibility	Source	Unit	Parent
procedure function	protected	FMX.Controls.pas FMX.Controls.hpp	FMX.Controls	TControl

Description

OnMouseDown event dispatcher.

A control calls MouseDown in response to any of mouse-down messages, decoding the message parameters into the shift-key state and position, which it passes in the Shift, X, and Y parameters, respectively:

• Button determines which mouse button is pressed: left, right, or middle.
• Shift indicates which shift keys--SHIFT, CTRL, ALT, and CMD (only for Mac)--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. If Button is mbLeft, MouseDown sets PressedPosition as a TPointF(X,Y).

Override the protected MouseDown method to provide other responses when a mouse button is down while the cursor is over the control.

See Also

• FMX.Controls.TControl.OnMouseDown
• System.Classes.TShiftState
• System.UITypes.TMouseButton
• FMX.Controls.TControl.OnMouseLeave
• FMX.Controls.TControl.OnMouseEnter
• FMX.Controls.TControl.OnMouseMove
• FMX.Controls.TControl.OnMouseUp
• FMX.Controls.TControl.OnMouseWheel