[Glade-users] Loading widgets from XML file using libglade

[Lukasz Gromotowicz]

As far as I can see, the Gtk-Critical fault says that you can not put the
widget onto another parent because it already has a parent. The second
parameter in the glade_xml_new() is for the root widget node. Try this:

page1xml=glade_xml_new("./page1.glade","mainvbox",NULL);

and then

rightpanevbox= glade_xml_get_widget(page1xml,"mainvbox");

Hope it works,
good luck.

LUK (gromot)



2009/12/16 Andrew Wood <ajwood at theiet.org>

> Im having problems getting libglade to load widgets from an XML file.
> My aim is to have a GtkVBox in a window - the window is made in code not
> Glade, and the contents of the vbox will be loaded from Glade files such
> that the contents of the vbox can change as the app runs.
>
> To test it out I created 2 Glade XML files page1.glade and page2.glade
> each have the following hierarchy:  GtkWindow->GtkVBox->GtkLabel
>
> The label contains the text "Page1" or "Page2" accordingly. I want to
> load the GtkVBox from either file and use it to 'replace' a manually
> created vbox which is in code.
>
> In the code which is just a short 'main' file Ive declared the following:
>
> GladeXML* page1xml;
> GladeXML* page2xml;
>
> GtkWidget* mainwindow;
> GtkWidget* rightpanescrollview;
> GtkWidget* rightpanevbox;
>
> page1xml=glade_xml_new("./page1.glade",NULL,NULL);
> rightpanevbox= glade_xml_get_widget(page1xml,"mainvbox");
>
>
> gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(rightpanescrollview),rightpanevbox);
>
> The rightpanevbox is then put into the window.
>
> But when the app runs the label from Glade doesnt appear and the
> following is printed on the console:
>
> (a.out:3894): Gtk-CRITICAL **: gtk_scrolled_window_add_with_viewport:
> assertion `child->parent == NULL' failed
> I tried decalring in code a GtkWindow and loading the top-level window
> widget from the XML file but again I got an error similar but slightly
> different suggesting that no widgets are actually being found in the file.
>
> The file itself is found because it throws up an error if I change the
> filename in the call to  glade_xml_new but it seemingly cant find
> anything in that file.
>
> Any suggestions? I can post the entire main code file if it would help
> its not very long.
>
> Thanks
> Andrew
>
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