Moving a window to hold a Qml MouseArea

Question

I want to know how to move a window by clicking and holding MouseArea in Qt / QML.

Answer 1

You can open the view widget in QML with

QmlApplicationViewer viewer;
QDeclarativeContext *context = viewer.rootContext();
context->setContextProperty("viewerWidget", &viewer);

Then change its property posto move the window:

MouseArea {        
    anchors.fill: parent
    property variant previousPosition        
    onPressed: {
        previousPosition = Qt.point(mouseX, mouseY)
    }
    onPositionChanged: {
        if (pressedButtons == Qt.LeftButton) {
            var dx = mouseX - previousPosition.x
            var dy = mouseY - previousPosition.y
            viewerWidget.pos = Qt.point(viewerWidget.pos.x + dx, 
                                        viewerWidget.pos.y + dy)
        }
    }
}