Pre-select QMenu item

[Luc-Henri Jolly Scienomics]

Hi John,

I'm nit a specialist (far from that). But what I understand from the doc is that

setActiveAction

sets the action to the ***currently*** highlighted item. It is not tell that it's made to highlight the item. 

So, what I'm thinking is that it works in your little menu code, because it's the only one executed and it may be that showing the menu silently selects the first item, fue to another thing than the selectActiveAction. 

In your big app, this is not the same situation. Did you try to select by default the second or third item? 

When going from qt5 to Qt6, I've seen that using the activated signal in a comboBox does trigger the action in Qt5, but doesn't  in Qt6.

Hope that helps! 

Le 3 mars 2024 01:21:51 GMT+01:00, John F Sturtz <john at sturtz.org> a écrit :
>Hello good folks.
>
>I think this is a relatively straightforward question.  But the issue is complicated by the fact that what I am trying to do works perfectly well (seemingly) in my small test program.  In my larger app, not so much.
>
>I am creating a QMenu object on the fly and then using .exec() to display it as a popup.  What I would like to do is cause the first item in the menu to be already selected when it pops up.
>
>I'd have thought this would be simple enough to accomplish, using .setActiveAction().  And indeed, in the small test program I wrote (which is in the zip file attached), it does seem to work as I expect. The pertinent code is:
>
>            menu = QtWidgets.QMenu()
>            for s in ('Foo', 'Bar', 'Baz'):
>menu.addAction(QtGui.QIcon('account.png'), s)
>menu.setActiveAction(menu.actions()[0])
>menu.exec(self.mapToGlobal(QtCore.QPoint(20, 20)))
>
>In my smaller test program, this does just what I expect:  When the menu pops up, the first item is selected.
>
>Here's the rub:  When I put essentially the exact same code into my larger app, it behaves oddly.  The first time I display the popup menu, it doesn't work.  The popup menu displays, but it does not select the first item as I would expect.  The next time I display the popup, it does work.  And every time thereafter, until the app shuts down.
>
>I realize this is a bit of a slippery question, because I can't post the code that doesn't work -- only the code that does.  Apparently, something that is going on with the larger app is messing with this.  But I'm wondering if anyone has any ideas as to why this might be the case, or what I might try to get around it.
>
>Thanks!
>
>/John

-- 
Luc-Henri Jolly
System manager Scienomics in Paris
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