[Glade-users] Loading widgets from XML file using libglade
dhk
dhkuhl at optonline.net
Wed Dec 16 18:37:28 EST 2009
Andrew Wood wrote:
> Ah. The rightpanevbox is inside the right portion of an HPane. I want
> the left side of the HPane to stay the same (declared in code) but the
> contents of the right side to change (and be loaded from Glade).
>
>
> The page1.glade file is as follows. I dont actually want that 'window1'
> but I cant seem to find a way of setting the top level as just a vbox.
>
> <?xml version="1.0"?>
> <glade-interface>
> <!-- interface-requires gtk+ 2.16 -->
> <!-- interface-naming-policy project-wide -->
> <widget class="GtkWindow" id="window1">
> <child>
> <widget class="GtkVBox" id="mainvbox">
> <property name="visible">True</property>
> <property name="orientation">vertical</property>
> <child>
> <widget class="GtkLabel" id="label1">
> <property name="visible">True</property>
> <property name="label" translatable="yes">PAGE1</property>
> </widget>
> <packing>
> <property name="position">0</property>
> </packing>
> </child>
> </widget>
> </child>
> </widget>
> </glade-interface>
>
>
>
> David López Luengo wrote:
>> The problem comes because your rightpanevbox widget is already inside
>> another widget. Are you sure that in the mainvbox file definition,
>> rightpanevbox is the top widget? If you post the xml would help a lot.
>> It seems to be an easy-to-solve problem :-)
>>
>> Good luck!
>>
>>
>> --
>> David
>>
>>
>> 2009/12/16 Andrew Wood <ajwood at theiet.org <mailto: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
>>
>> _______________________________________________
>> Glade-users maillist - Glade-users at lists.ximian.com
>> <mailto:Glade-users at lists.ximian.com>
>> http://lists.ximian.com/mailman/listinfo/glade-users
>>
>>
>>
>>
>> --
>> David
>>
>> ______________________________________________________________________
>> This email has been scanned by the MessageLabs Email Security System.
>> For more information please visit http://www.messagelabs.com/email
>> ______________________________________________________________________
>
>
> David López Luengo wrote:
>> The problem comes because your rightpanevbox widget is already inside
>> another widget. Are you sure that in the mainvbox file definition,
>> rightpanevbox is the top widget? If you post the xml would help a lot.
>> It seems to be an easy-to-solve problem :-)
>>
>> Good luck!
>>
>>
>> --
>> David
>>
>>
>> 2009/12/16 Andrew Wood <ajwood at theiet.org <mailto: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
>>
>> _______________________________________________
>> Glade-users maillist - Glade-users at lists.ximian.com
>> <mailto:Glade-users at lists.ximian.com>
>> http://lists.ximian.com/mailman/listinfo/glade-users
>>
>>
>>
>>
>> --
>> David
>>
>> ______________________________________________________________________
>> This email has been scanned by the MessageLabs Email Security System.
>> For more information please visit http://www.messagelabs.com/email
>> ______________________________________________________________________
>
> _______________________________________________
> Glade-users maillist - Glade-users at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/glade-users
>
I wrote a function getGladeWidget() to get the widget I want out of the
glade xml file. Once I have it I add it to a container. I'm not sure
how efficient it is, but it works.
I use it like this.
wid=getGladeWidget(filename, "menubar1", TRUE);
gtk_container_add(GTK_CONTAINER(vbox), wid);
The getGladeWidget() function is defined as follows.
GtkWidget *getGladeWidget(gchar *filename, gchar *glade_widget_id,
gboolean connect) {
GladeXML *xml=NULL;
GladeInterface *iface=NULL;
GladeWidgetInfo *info=NULL;
GtkWidget *rwidget=NULL; /* the return widget */
xml=glade_xml_new(filename, glade_widget_id, NULL);
iface=glade_parser_parse_file((filename, NULL);
if (!iface) {
g_object_unref(G_OBJECT(xml));
g_error("%s:%d getGladeWidget() iface is NULL.\n", __FILE__, __LINE__);
}
info=(GladeWidgetInfo *)g_hash_table_lookup(iface->names,
glade_widget_id);
rwidget=glade_xml_build_widget(xml, info);
gtk_widget_show(rwidget);
if(connect==TRUE) {
glade_xml_signal_autoconnect(xml); // Connect the Signals
}
glade_interface_destroy(iface);
g_object_unref(G_OBJECT(xml));
return rwidget;
}
Good Luck.
dhk
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