[Interest] Capture keyPressEvent on QMenuBar/QMenu?

Tony Rietwyk tony at rightsoft.com.au
Thu Oct 11 02:02:53 CEST 2018

Hi Israel,

Try installEventFilter on the menu to see the KeyPress events before 
they are handled by the menu.

Regards, Tony

On 11/10/2018 7:07 AM, Israel Brewster wrote:
> I want to modify a QAction if the user holds down a specific key. You 
> can see similar behavior on the Mac, for example, if you pull down the 
> Apple menu and press/release the option key - "About This Mac" changes 
> to "System Information...", among other things. This is the behavior I 
> want to emulate in my application.
> To that end, I tried overriding the keyPressEvent on both the QMenuBar 
> and the QMenu containing the QAction. However, my debugging indicated 
> that neither of these keyPressEvent functions were called when 
> pressing any key with the relevant QMenu displayed.
> I'm sort of wondering if this is perhaps due to the event being 
> handled at a lower level in order to provide "type ahead" type 
> functionality in the menu? I did notice that different menu entries 
> are selected when typing various keys, which I believe to be normal 
> behavior.
> Regardless, how can I respond to a keyPress type event in a QMenuBar 
> or QMenu?
> -----------------------------------------------
> Israel Brewster
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> Interest at qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest

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