Activating menu button with key shortcut in GTK 4

Platform
1

How to do this in GTK 4? Like many GNOME apps my GtkHeaderBar has a primary menu (GtkMenuButton) which can be triggered (opened/closed) by a keyboard shortcut, the F10 key.

In GTK 3 I used gtk_widget_add_accelerator() with clicked signal. This function doesn’t exist in GTK 4. And it seems there is no action signal anymore that I could use, for example with GtkShortcut and gtk_signal_action_new(). Neither GtkMenuButton nor its parent GtkWidget have appropriate action signals (clicked or something similar).

The other idea was GtkShortcut with a callback action. gtk_button_clicked() is gone, but there is now gtk_menu_button_popup () or gtk_menu_button_popdown (), however, I don’t see how I can get the current state, whether to call popup or popdown.

So is it possible to find out GtkMenuButton’s state and is GtkShortcut the preferred way for activating it?

2

For knowing the MenuButton state, I opened this bug some times ago. (Yes, the answer Matthias gave sounds obscure to me too.)

3

What Matthias meant is that GtkWindow already has a shortcut mapped to F10 to activate any eventual menu bar attached to the window.

Since GtkMenuButton provides the equivalent of a menu bar, GtkWindow should activate the button automatically, without developer intervention.

4

Since GtkMenuButton provides the equivalent of a menu bar, GtkWindow should activate the button automatically, without developer intervention.

So having a way to say to the app “hey, this is my hamburger menu”? I fear that a semi-automatic handling of this will cause some problems for using the Ctrl + F10 shortcut (in the same way as you cannot easily register Shift + F1 for opening the About window, because F1 is partly managed by Gtk; no, I didn’t open a bug for that, just found a way to make things work); but I’m not opposed to it, it’s always great to have the toolkit push to some more coherence between the apps.

Anyway, I think an active property would be great whether or not the hamburger menu is managed automatically or not. To put a game in pause when the menu is opened, for example. I’ll add that use case to the bug also.

5

Thank you both for your comments here and at the bug report. I like the linked arnaudb/wip/gtk4 branch in Chess, are you aware of other projects which have public GTK 4 migration branches? I just know of gnome-todo being in master already on GTK 4 and Timm Bäder’s Corebird and Waster.

6

are you aware of other projects which have public GTK 4 migration branches?

Tetravex, Taquin, Klotski, Mahjongg, Five-or-More, Four-in-a-Row, Swell-Foop, Mines, Robots and Sudoku (and the libgnome-games-support module) have similar branches that worked flawlessly at one point in the two last months. Some need an upgrade now –as Gtk4 continues to be a moving target– but I consider them as a proof an update will be possible for these games.

7

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