Re: Getting a GDK_CONFIGURE event from a GtkImage

["Jim George" <jimgeorge gmail com>]

On 6/26/07, Jim George <jimgeorge gmail com> wrote:
> > >[...] caused an infinite loop, because I'm trying to
> > >do the following:
> > >
> > >gboolean solar_cal_pixbuf_resize(GtkWidget *widget, GtkAllocation
> > >*alloc, gpointer user_data)
> > >{
> > >  GtkImage *img_widget = user_data;
> > >  GdkPixbuf *pixbuf = gtk_image_get_pixbuf(img_widget);
> > >  if (pixbuf) g_object_unref(pixbuf);
> > >  pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, alloc->width,
> > >alloc->height);
> > >  gtk_image_set_from_pixbuf(img_widget, pixbuf);
> > >}
> > >
> > >The call to gtk_image_set_from_pixbuf causes a size-alloc to be
> > >emitted, leading to the infinite loop. I don't see why the
> > >size-request signal is not being emitted.
> >
> > Just put a call to g_signal_handlers_block_by_func() before
> > gtk_Image_set_from_pixbuf(), and then after, a call to
> > g_signal_handlers_unblock_by_func().  There may be a more elegant way
> > of handling that, but this'll work.
> >
> >         -brian
>
> Thanks, Brian, it works now.

I'll take that back, the handler keeps getting called even if I block
it before calling gtk_image_set_from_pixbuf. If I disconnect it, it
doesn't get called again. Seems like the allocate-event occurs with
some delay after gtk_image_set_from_pixbuf is called.