在 MacOS 上使用 cmd + h 隐藏时无法显示（）QWindow

Question

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.

Answer 1

I have discovered that if you call hide() before calling show() , show() will behaving correctly.

Workaround to this problem is following

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

there may be issue that when app is already on focus, and you click Show it will, hide and show again, but it is acceptable problem in my case.