Qt correct way to show/display/raise window

Question

Quite often I find that I need to show and bring a window to a front. For example when the user attempts to reload the same document I simply bring up the old one. To do this I have code like this:

widget->raise();
widget->activateWindow();
widget->showNormal();

It's starting to feel like I'm missing a shortcut function. Surely this type of behaviour is quite common. Is there some preferred function that will do all of the above and/or just do the right thing on each target OS?

Note: I've just noticed a defect, thus a special function is even more important now. If the window is minimized, activateWindow does not work. This happens even if you reorder the above to showNormal first.

Yes, I've been through the docs a lot. Each OS does something slightly different, thus I need several calls. My app is the current top-level window in this case, so it usually works. — edA-qa mort-ora-y, Oct 19 '11 at 11:30
Sounds like a bug it works fine for me in PySide. Hard to evaluate without a SSCCE that reproduces the problem. — eric, Sep 12 '15 at 17:00
Indeed it seems like a bug, `activateWindow()` alone works for me as well. Can you test this with a newer Qt version (say, 5.6 or 5.7)? — Romário, Oct 15 '16 at 04:41

azf · Answer 1 · 2014-06-04T06:18:23.743

17

this is a working "shortcut" :

widget->setWindowState(Qt::WindowActive) ;

You can couple it with the last Qt::WindowState of the window. This notation is not very explicit though.

edited Jun 04 '14 at 06:18

answered Oct 19 '11 at 11:14

azf

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Unfortunately **raise()**, **showNormal()** - they both didn't work for me. But **setWindowState(Qt::WindowActive)** works fine on my case. Thanks... – Dewsworld Mar 30 '12 at 15:23
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Weird... this doesn't work for me, but `activateWindow()` does. Maybe this has been fixed in Qt 5.7? – Romário Oct 15 '16 at 04:40

score -3 · Answer 2 · answered Oct 19 '11 at 06:44

-3

No need for such complication. This is enough :

widget->raise();
widget->show();

By the way, you can call show() once, and unless you hide() it, there are no needs to call show() again.

answered Oct 19 '11 at 06:44

BЈовић

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This does not restore a window that has been minimized. – edA-qa mort-ora-y Oct 19 '11 at 07:09
Nor does it give focus to the window. Those both `activateWindow` and `showNormal` are still required. – edA-qa mort-ora-y Oct 19 '11 at 07:12
@edA-qamort-ora-y You didn't mention in your question that a window can be minimized – BЈовић Oct 19 '11 at 07:16
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I could argue that the call to `showNormal` is a clear indication that the window could be minimized. – edA-qa mort-ora-y Oct 19 '11 at 07:36

Qt correct way to show/display/raise window

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