How to remove MenuItem from Menu?

[Peter Daum]

There are several functions to dynamically change/reorder menus,
but I couldn't find or figure out a way how to remove a certain
item from a Menu. Is this possible? How?

(I tried some strange things like calling item->destroy
and was not surprised that it didn't work ...)

Regards,
                        Peter


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[jcupitt]

2009/10/21 Peter Daum <gator_ml@...>:
> There are several functions to dynamically change/reorder menus,
> but I couldn't find or figure out a way how to remove a certain
> item from a Menu. Is this possible? How?
>
> (I tried some strange things like calling item->destroy
> and was not surprised that it didn't work ...)

You can just use gtk_widget_destroy(item), I believe. Though I
generally just destroy and rebuild the whole menu for safety.

John
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[Allin Cottrell]

On Wed, 21 Oct 2009, Peter Daum wrote:

> There are several functions to dynamically change/reorder menus,
> but I couldn't find or figure out a way how to remove a certain
> item from a Menu. Is this possible? How?
>
> (I tried some strange things like calling item->destroy
> and was not surprised that it didn't work ...)

You might want to consider making an item inactive rather than
removing it -- depending on the context, of course.

I think it's typically more user-friendly, or user-informative, to
make an inapplicable menu item inactive.  If the item is not
there, the user may wonder, "Huh, can't this program do X?", but
if it's there and inactive the user may realize, "Yes, it can do
X, but there's something about the current state that makes X
unavailable."

Anyway, if a menu item represents a GtkAction, it can be made
inactive via gtk_action_set_sensitive().

Allin Cottrell
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[Peter Daum]

jcupitt@... wrote:
> 2009/10/21 Peter Daum <gator_ml@...>:
>> (I tried some strange things like calling item->destroy
>> and was not surprised that it didn't work ...)
>
> You can just use gtk_widget_destroy(item), I believe. Though I
> generally just destroy and rebuild the whole menu for safety.

oops - when I tried it with destroy, I had screwed up;
I re-checked it, and this time it works :-)

Thanks,
                     Peter

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[Lars Wirzenius-5]

ke, 2009-10-21 kello 23:11 +0200, Peter Daum kirjoitti:
> There are several functions to dynamically change/reorder menus,
> but I couldn't find or figure out a way how to remove a certain
> item from a Menu. Is this possible? How?
>
> (I tried some strange things like calling item->destroy
> and was not surprised that it didn't work ...)

This should work (I do something similar for menu items added/removed by
plugins when they are enabled/disabled):

* when you create and add the menu item, keep a reference to it

* when you remove it, call the function to remove a child from the
container; with the Python binding's it's just the .remove(menuitem)
method, but in C I guess it's gtk_container_remove.


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[jcupitt]

2009/10/22 Lars Wirzenius <liw@...>:
> * when you create and add the menu item, keep a reference to it
>
> * when you remove it, call the function to remove a child from the
> container; with the Python binding's it's just the .remove(menuitem)
> method, but in C I guess it's gtk_container_remove.

Actually, you can just search for the item and destroy it with
gtk_widget_destroy(). _destroy() will automatically unlink widgets
from their containers.

John
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