System.Classes.TShiftState

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Delphi

type TShiftState = set of (ssShift, ssAlt, ssCtrl, ssLeft, ssRight, ssMiddle, ssDouble, ssTouch, ssPen, ssCommand, ssHorizontal);

C++

typedef System::Set<System_Classes__1, System_Classes__1::ssShift, System_Classes__1::ssHorizontal> TShiftState;

Properties

Type	Visibility	Source	Unit	Parent
set typedef	public	System.Classes.pas System.Classes.hpp	System.Classes	System.Classes

Description

Indicates the state of the modifier keys, the mouse buttons, or the touch devices.

The TShiftState type is used by key-event and mouse-event handlers to determine the state of the modifier keys, the state of the mouse buttons or the state of an attached touch device, when the event occurs. It is a set of flags that indicates the following states:

Value	Description
ssShift	The SHIFT key is held down.
ssAlt	The ALT key is held down.
ssCtrl	The CTRL key is held down.
ssLeft	The left mouse button is held down.
ssRight	The right mouse button is held down.
ssMiddle	The wheel mouse button is held down.
ssDouble	The mouse button was double-clicked.
ssTouch	The user is holding a finger on the touch surface.
ssPen	The pen is touching the surface of a tablet.
ssCommand	The CMD key is held down (only on Mac).
ssHorizontal	The user is moving a finger horizontally on the touch surface or is rolling the mouse wheel to produce a horizontal displacement.

See Also

• Vcl.Controls.TWinControl.OnKeyDown
• Vcl.Controls.TWinControl.OnKeyUp

• Sets