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Editorial Team
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Asked: 2026-06-12T11:23:07+00:00

I’m refactoring some code that normally requires the user to click a button for

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I’m refactoring some code that normally requires the user to click a button for a popup menu to appear (it appears beside the button), what I’m trying to do is show the popup menu if the user hovers the mouse over the button icon for a preset duration and hide it again if the user moves onto another button icon.

However, activating the menu via gtk_menu_popup steals mouse and keyboard focus, I have made little progress trying to grab focus for the button widget.

Is it possible to return focus to the button icon?

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1 Answer

  1. Editorial Team

    Debugging this turned out to be quite troublesome, as gtk_menu_popup grabs the gdk keyboard and pointer focus, which prevents one from stepping through the code with gdb, I eventually managed it by running the code in a VM and using a remote debugging session with gdb over SSH.

    There are a few different mechanisms through which the popup may steal focus from the original widget

    1. Via transient window relationships (only if you pass parent_menu_shell)
    2. Via gdk_pointer_grab
    3. Via gtk_grab_add

    As I set the parent_menu_shell shell parameter to NULL, this meant that I had to undo the last two ‘grabs’, like so:

    gdk_pointer_ungrab(GDK_CURRENT_TIME);
gdk_keyboard_ungrab(GDK_CURRENT_TIME);
gtk_grab_remove(menu);

    This did the trick but focus gets temporarily stolen by the popup, which causes problems too

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