PointerEvent QML Type

Provides information about an event from a pointing device More...

Import Statement: import QtQuick 2.11

Properties

Detailed Description

A PointerEvent is an event describing contact or movement across a surface, provided by a mouse, a touchpoint (single finger on a touchscreen), or a stylus on a graphics tablet. The device property provides more information about where the event came from.

See also PointerHandler.

Property Documentation

[read-only] button : enumeration

This property holds the button that caused the event, if any. If the device does not have buttons, or the event is a hover event, it will be Qt.NoButton.


[read-only] buttons : int

This property holds the combination of mouse or stylus buttons pressed when the event was generated. For move events, this is all buttons that are pressed down. For press events, this includes the button that caused the event, as well as any others that were already held. For release events, this excludes the button that caused the event.


[read-only] device : PointerDevice

This property holds the device that generated the event.


[read-only] modifiers : int

This property holds the keyboard modifier flags that existed immediately before the event occurred.

It contains a bitwise combination of the following flags:

ConstantDescription
Qt.NoModifierNo modifier key is pressed.
Qt.ShiftModifierA Shift key on the keyboard is pressed.
Qt.ControlModifierA Ctrl key on the keyboard is pressed.
Qt.AltModifierAn Alt key on the keyboard is pressed.
Qt.MetaModifierA Meta key on the keyboard is pressed.
Qt.KeypadModifierA keypad button is pressed.

For example, to react to a Shift key + Left mouse button click:

Item {
    TapHandler {
        onTapped: {
            if ((event.button == Qt.LeftButton) && (event.modifiers & Qt.ShiftModifier))
                doSomething();
        }
    }
}

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