Re: drawing on the window background

[Michael Rothwell <rothwell holly-springs nc us>]

To answer my own question,

gtk_widget_set_app_paintable(window, TRUE);

-M

On Sun, 2002-01-06 at 15:10, Michael Rothwell wrote:
> Hi there,
>
> Below is a snippet of a program that creates a GtkWindow and draws an
> image onto it. the problem is, I can see the image get painted, then
> overdrawn with grey. It stays grey until I 'expose' part of the window.
> How can I avoid the gray overdraw?
>
> /******************************************************************
>  * main
>  ******************************************************************/
> int
> main(int argc, char **argv)
> {
>       gtk_init(&argc,&argv);  
>
>       tmp     = gdk_pixbuf_new_from_file("14b.jpg");
>       pix_bkg = gdk_pixbuf_scale_simple(tmp,
>               640,480,
>               GDK_INTERP_BILINEAR);
>       gdk_pixbuf_unref(tmp);
>
>       window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>       
>       gtk_window_set_default_size(GTK_WIDGET(window), 640, 480);
>       
>       gtk_signal_connect(GTK_OBJECT(window),"expose_event",w_expose,NULL);
>
>       gtk_widget_show(GTK_WIDGET(window));
>
>       gtk_main();
> };
>
>
> /******************************************************************
>  * w_expose
>  ******************************************************************/
> static int
> w_expose (GtkWidget *widget, GdkEventExpose *event)
> {
>
>       gdk_pixbuf_render_to_drawable_alpha(
>               pix_bkg,
>               window->window,
>               0,0,
>               0,0,
>               640,480,
>               GDK_PIXBUF_ALPHA_BILEVEL,
>               0,
>               GDK_RGB_DITHER_NONE,
>               0,0);
>
> };
>
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