Re: How to add a GtkWidget to an existing X-Window Widget hierarchy?

[Kevin DeKorte <kdekorte yahoo com>]

On Friday 01 April 2005 03:19 pm, Marcel Ruff wrote:
> Hi Kevin,
>
> thank you for the feedback.
>
> But your code snippet fails in my case, see below:
>
> Kevin DeKorte wrote:
> > On Thursday 31 March 2005 12:21 pm, Marcel Ruff wrote:
> > > Hi,
> > >
> > > i'm running on Linux 2.6.8 with gtk-2 and gcc 3.3.4
> > >
> > > I have an existing X-Window application (Motif)
> > > to which i want to add a GtkWidget.
> > >
> > > I have for example plain X:
> > >
> > >  ----------------------------------------
> > >  Widget w_form = ...
> > >  guint32 xid = XtWindow(w_form);
> > >  ----------------------------------------
> > >
> > > To add a gtk+ VBOX child to the above w_form i'm trying now since hours
> > > approaches like:
> > >
> > >  ----------------------------------------
> > >  ...
> > >  gtk_init(&argc, &argv);
> > >
> > >  Display *xdisplay = XtDisplay(w_form);
> > >  GdkDisplay *gdkDisplay = gdk_x11_lookup_xdisplay(xdisplay);
> > >  GdkWindow* gdkWindow = gdk_window_foreign_new_for_display(gdkDisplay,
> > > xid);
> > >
> > >  vbox = gtk_vbox_new (FALSE, 0);
> > >  gtk_container_add(GTK_CONTAINER(gdkWindow), vbox);
> > >  ----------------------------------------
> > >
> > > with no success.
> > > How can i expand my X-Window Widgets with GtkWidgets?
> > >
> > > Thank you for some help,
> > >
> > > Marcel
> > >
> > > PS: In fact i want to embed mozilla into my X app using
> > > the gtk_socket_new() and gtk_plug_new(xid) approach in
> > > the same executable. Is this possible? Is there a more simple approach?
> > > We had a first running approach with gtk_plug_new(xid)running
> > > under gtk-1.2 but this embedding fails with gtk-2 for some unknown
> > > reason (nothing is displayed without any error message).
> >
> > Marcel,
> >
> > I have the same issue in mplayerplug-in in that I cannot use a
> > gtk_plug_new in gtk2 (although it works in gtk1). I worked around it with
> > this code (many hours of bashing around to get something working, and it
> > turns out to be simple). A GTK_WINDOW_POPUP is an undecorated window.
> >
> >     GtkWidget *gtkwidget;
> >
> >     gtkwidget = gtk_window_new(GTK_WINDOW_POPUP);
> >
> >     XReparentWindow(GDK_WINDOW_XDISPLAY(gtkwidget->window),
> >                     GDK_WINDOW_XWINDOW(gtkwidget->window), x_window, 0,0);
>
> The above line results in:
>
> Gdk-WARNING **: gdkdrawable-x11.c:970 drawable is not a pixmap or window
> Segmentation fault
>
> What could be the reason (x_window is a XtWindow(XmForm Widget), the same
> result when i try a XtWindow(XmDrawingArea Widget)).


Are you sure you are using it right...

I guess I might have missed one thing...

you have to have the gtkwidget shown.

gtk_widget_show(gtkwidget) for the XReparent to work

And the Window that comes into the SetWindow command from Mozilla is a 
structure.  

NPError nsPluginInstance::SetWindow(NPWindow * aWindow)

aWindow->window  is the actual X window handle.

Look at the SetWindow method in mplayerplug-in. It has everything you need.

http://mplayerplug-in.sf.net

This might also come in handy

        gtk_widget_set_size_request(gtkwidget, aWindow->width,
                                    aWindow->height);


Something like this perhaps?

        GtkWidget *gtkwidget;

        gtkwidget = gtk_window_new(GTK_WINDOW_POPUP);
        gtk_widget_set_size_request(gtkwidget, aWindow->width,
                                    aWindow->height);
        gtk_widget_show(gtkwidget);

        XReparentWindow(GDK_WINDOW_XDISPLAY(gtkwidget->window),
                        GDK_WINDOW_XWINDOW(gtkwidget->window), x_window, 0,0);




Kevin


> thanks
> Marcel
>
> PS: I have posted a bug to bugzilla about the gtk_vbox_new():
> Bug 172348
> http://bugzilla.gnome.org
>
> >     gtk_widget_map(gtkwidget);
> >
> >
> >     Where "x_window" is a X window id.
> >
> > Kevin
> >
> > Visit: http://mplayerplug-in.sf.net
> >
> >
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