Can't show() QWindow when it was hidden with cmd + h on MacOS

Katos

I have an issue that I cannot raise my app Window when it got hidden with MacOS shortcut. It work correctly in all other cases.

In my app i have 1 main qWindow called QWindow* mMainWindow; and following code added to tray button

mMenu->addAction(createAction("Show", [=] {
    if (mMainWindow) {
        mMainWindow->show();
        mMainWindow->raise();
        mMainWindow->requestActivate();
    }

When I just use qt mMainWindow->hide() and then raise it back, mMainWindow works fine. Method mMainWindow->isActive() return correct true state when app is active and false when it is hidden.

But when I hide app using build-in in mac "cmd + h", mMainWindow->isActive() return true regardless if app app is hidden or not. Calling my action item does nothing, mMainWindow stay all the time hidden.

Is there any solution to fix this issue? I have seen people recommend using QWidget instead of QWindow and calling widget->activateWindow() but it is not solution i can use in my case.

SGaist

Hi and welcome to devnet,

Which version of Qt are you using ?
On which version of macOS ?
Can you provide a minimal compilable example that shows that behaviour ?

Katos

Which version of Qt are you using ? 5.15.0
On which version of macOS ? Mojave
Can you provide a minimal compilable example that shows that behaviour ?

Here is quick example of the problem (mine tray is written in cpp, but i can see that problem also appear when using qml one).

Click Hide then Show and it work fine.
Use "cmd + h" then Show and it doesnt.

import QtQuick 2.15
import QtQuick.Window 2.15
import Qt.labs.platform 1.1

Window {
    id: window
    visible: true
    width: 640
    height: 480

    SystemTrayIcon {
        visible: true

        menu: Menu {
            MenuItem {
                text: qsTr("Show")
                onTriggered: {window.show(); window.raise(); }
            }
            MenuItem {
                text: qsTr("Hide")
                onTriggered: window.hide()
            }
        }
    }

}

After writing this example i have realised that if you call Hide after Window was hidden with Mac shortcut, Show will work. (didn't realise sooner because my app has no Hide button)
So looks like i will just add to my show button extra hide() call as a work-around to this bug and my code will looks like this.

    mMenu->addAction(createAction("Show", [=] {
        if (mMainWindow) {
            mMainWindow->hide();
            mMainWindow->show();
            mMainWindow->raise();
            mMainWindow->requestActivate();
        }
    }));

SGaist

I currently do not know whether the CMD+H action provides any feedback to the application. Your workaround was what came to mind. Glad it is working.