Re: Forcing Image redraw

[Simon Fuhrmann <simonfuhrmann gmx de>]

Hi!

As far as I know it is generally a bad thing to call any Gtk function
from a thread but the main thread (where the toolkit lives). I suggest
to store the pixbuf at some common place, notify the main thread about
updated data (use Glib::Dispatcher for that), and set the image in the
main thread.

Hope that helps,
Simon

jody wrote:
> Hi
> I have a gtkmm application containing a Gtk::Image.
> In a different thread a pixbuf is created at irregular
> but frequent intervals and the image's set()-method with this pixbuf is called
> 
> The thread has knowledge of the applications Gtk:Window (m_pWin)
> and of the Gtk::Image (m_pImg). After having created the Pixbuf and
> set it i do the following:
> 
>     m_pImg->queue_draw();
> 
>     Glib::RefPtr<Gdk::Window> win = m_pWin->get_window();
>     if (win != NULL) {
>         Gdk::Rectangle r(0, 0, iW, iH);
>         win->invalidate_rect(r, false);
>     }
> 
> But the image is only refreshed whenever i move the mouse.
> Is there any way i can really force the image to be repainted immediately
> after i fill its PixBuf?
> 
> Thank You
>   Jody
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