Re: Q: how to stop a drawingarea from being drawn?

[Kevin DeKorte <kdekorte yahoo com>]

I may be wrong here but try this

Set the return value of the signal handler to gboolean

example:
gboolean gtkwin_draw(GtkWidget * widget, GdkEventExpose *event, mystruct *s)

And set the return value to TRUE

I believe TRUE means that you handled all the drawing and it should not be 
forwarded to the default method.

Kevin


On Friday 20 February 2004 09:09 am, Johan Knol wrote:
> Hi All,
>
> I have an empty drawingarea (live_display.image) who's xwinid I pass on
> to SDL:
>
>    // set the env var for SDL to embed in
>    live_display.xwinid=GDK_WINDOW_XWINDOW(live_display.image->window);
>    sprintf (env, "SDL_WINDOWID=%d", live_display.xwinid);
>    putenv(env);
>
>    // Initialize the SDL library (video subsystem)
>    if ( SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) == -1) {
>      fprintf(stderr,"Couldn't initialize SDL video subsystem\n");
>      return(0);
>    }
>
> That works *perfectly*. However, every resize of its toplevel parent
> sends a "draw" signal that clears the drawingarea (because it's empty)
> and after that SDL refreshes it. That causes an anoying flickering. I
> can connect to that signal, but since the signal function returns void,
> how do I prevent that from happening?
>
> TIA
> Johan
>
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