Resize and place a background image

[Rúben Rodrigues <ruben_gr live com pt>]

Hi,

I'm trying to make something like this 
http://www.kksou.com/php-gtk2/sample-codes/place-a-background-image-in-GtkWindow-Part-6-align-bottom-right-GdkDrawable-draw_pixbuf.php
 
but in C language. For now i just want to fill background image to it's 
cointainer (GtkLayout), because the container is bigger than image, 
image is displayed in tiles...

So, i make something like this:

// Load model drawing from file.
     if((pixbuf = gdk_pixbuf_new_from_file("background.png", &error)) == 
NULL) {
                 g_print("Error.\n");
                 return -1;
     }


void on_layout_Home_expose_event(GtkWidget *widget, GdkEvent *event, 
gpointer   user_data){
     GtkAllocation allocation;
     GtkWidget    *homeWindow;
     GdkPixmap    *background;
     GtkStyle    *style;

     int w = gdk_pixbuf_get_width(pixbuf);
     int h = gdk_pixbuf_get_height(pixbuf);

     gtk_widget_get_allocation(GTK_WIDGET(widget),&allocation);


     // Set picture as background.
     homeWindow = GTK_WIDGET(gtk_builder_get_object(builder, 
"layout_Home"));

     gdk_pixbuf_render_pixmap_and_mask (pixbuf, &background, NULL, 0);
     style = gtk_style_new ();
     //style->bg_pixmap[0] = background;
gdk_draw_pixbuf(style->bg_pixmap[0],NULL,pixbuf,0,0,allocation.width-w-10,allocation.height-h-10,-1,-1,GDK_RGB_DITHER_NONE,0,0);
    gtk_widget_set_style (GTK_WIDGET(homeWindow), GTK_STYLE(style));

//    if(gtk_container_get_children(widget) != NULL){
//        gtk_widget_send_expose (gtk_container_get_children(widget),event);
//    }

     return TRUE;

}

But this doesn't work.. and it's normal that program return everytime to 
expose_event?

Thanks


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