[gtkada] GtkAda 3.8.1 Question about events in GTK.COMBO_BOX_TEXT

[Jose Alberto Fernandez Parejo]

Hello all,

Finally, I develop a search mechanism in GTK.COMBO_BOX_TEXT. I have done
the following.

I have created a GTK.COMBO_BOX_TEXT.GTK_NEW_WITH_ENTRY. Get the gentry
widget with GTK.COMBO_BOX_TEXT.GET_CHILD and  attach signal "changed" to
gentry widget.

But now the problem is that when COMBO_BOX_TEXT are open twice or more
the scroll buttons are lost. I have checked and it is a problem with
GTK.COMBO_BOX_TEXT.GTK_NEW_WITH_ENTRY not with the signal "changed".
With GTK.COMBO_BOX_TEXT.GTK_NEW there is no problem.

Is there any way to force the scroll buttons in COMBO_BOX_TEXT? Or to
set the number of shown elements?

Thanks in advance.
Regards





On 01/27/2016 03:31 PM, Jose Alberto Fernandez Parejo wrote:
> Hello,
>
> We are developing an application in GtkAda3.8.1 and I have to insert a
> GTK.COMBO_BOX_TEXT with a large number of elements.
>
> I am trying to develop a search mechanism to once the GTK.COMBO_BOX_TEXT
> is opened if the user press a key the elements starting with that key
> are shown in the GTK.COMBO_BOX_TEXT.
> For implementing this mechanism, we are defining and connecting the
> signal "key_press_event" in a GTK.HANDLERS.RETURN_CALLBACK callback but
> the signal is only triggered when the GTK.COMBO_BOX_TEXT is focused but
> not when it is opened.
> We have tried to connect to signals "popup" and "popdown" and these
> signals are not triggered.
>
> Is there any way to capture a key_pressed  or popup signal when the
> GTK.COMBO_BOX_TEXT is opened? Or do you know other way to implement a
> COMBO_BOX_TEXT search mechanism?
>
>
> Thanks in advance.
> Regards
>
>
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Evite imprimir este mensaje si no es estrictamente necesario.

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