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Bug
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Resolution: Unresolved
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Not Evaluated
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None
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6.9.3, 6.10.0
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None
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macOS
I'm trying to implement a transparent title bar and use startSystemMove() to allow moving the window by dragging that area.
On macOS, this works fine when using a physical mouse, but startSystemMove() fails intermittently when using the built-in touchpad.
The onPressed event is always triggered, but startSystemMove() often returns false, and the window does not move. Similar issue was reported and fixed in QTBUG-85105, but for Qt 5.15.0
Window {
id: mainWindow
width: 800
height: 600
visible: true
flags: Qt.Window | Qt.ExpandedClientAreaHint | Qt.NoTitleBarBackgroundHint
Rectangle {
height: 60
width: parent.width
color: "transparent"
MouseArea {
anchors.fill: parent
onPressed: {
console.log("Press event detected");
var success = mainWindow.startSystemMove();
console.log("startSystemMove() result:", success);
}
}
}
Rectangle {
anchors.fill: parent
color: "#4488ff"
}
}
I checked the event type received from the touchpad — it is 34 (NSEventTypePressure) — and this event is not handled by QCocoaWindow::startSystemMove().