Re: Clear A Pixmap

[nahuel9728 <nahuelsgk hotmail com>]

Thaxs Yeti for the answer but Sorry I'm not able to do it. I explain a little
bit what im doing and i would like to do:
main(){
mem_map=gtk_drawing_area_new();
gtk_signal_connect (GTK_OBJECT (mem_map), "expose_event",(GtkSignalFunc)
expose_event, NULL);
gtk_signal_connect
(GTK_OBJECT(mem_map),"configure_event",(GtkSignalFunc)configure_event,
NULL);
gtk_signal_connect (GTK_OBJECT (mem_map),
"button_press_event",(GtkSignalFunc)         button_press_event, NULL);
/*A button to erase all the drawed and paint things*/
boton = gtk_button_new_with_label ("Clear and paint");
gtk_signal_connect_object (GTK_OBJECT (boton), "clicked",GTK_SIGNAL_FUNC
(clear_and_paint),GTK_OBJECT (main_window));
show....
}

void expose_event(){
        gdk_draw_pixmap
}

void clear_and_pain(GtkWidget *widget, GdkEventExpose *event){
        /*HERE!!!!!!!! I WANNA CLEAN ALL MY DRAWED AREA*/
       gtk_widget_queue_draw_area(GTK_WIDGET(mem_map),0,0,910,440);
        /*This up should clean all the area??? */
     
        /*And later draw things.....*/
        draw_brush();
}
Any idea anyone....??? Has done somthing similar????

David NeÄas (Yeti)-2 wrote:
> On Thu, May 31, 2007 at 03:35:07PM -0700, nahuel9728 wrote:
> > I explain my thing... I have a pixmap, a drawing area. 
> > There are events that draw on it. But i have a button that must clear,
> > erase
> > all the painted on the drawing area.
> > Any idea how to make it happen????
>
> Make the drawing area repaint (e.g. with gtk_widget_queue_draw())
> and just do not draw anything there in the "expose-event"
> handler this time.
>
> Yeti
>
> --
> http://gwyddion.net/
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