I want to popup a window with the right mouse button, but there is a problem that I can't solve

[sdegongzuo]

slint version: 1.3.2
rust version: 1.75.0
OS version: Macos 14.2.1

export component Example inherits Window {
    width: 100px;
    height: 100px;

    popup := PopupWindow {
        Rectangle { height:100%; width: 100%; background: yellow; }
        x: 20px; y: 20px; height: 50px; width: 50px;
    }

    TouchArea {
        height:100%; width: 100%;
        pointer-event(PointerEvent) => {
                    // Press the right mouse button
                    if (PointerEvent.button == PointerEventButton.right) {
                        popup.show();
                    }
                }
    }
}

question: When I press the the right mouse button, the window is appear，When I release it, this window disappears.
I want the function that when I click the right mouse button, the window will popup and don't disappear. How to achieve this function? Thanks!

[asuper0]

see the doc

Properties
close-on-click (in bool): By default, a PopupWindow closes when the user clicks. Set this to false to prevent that behavior and close it manually using the close() function. (default value: true)

There has a example of popup window