display->primary_surface->SetColor(display->primary_surface,r,g,b,a);
display->primary_surface->DrawRectangle(display->primary_surface,menu_x,menu_y,menu_w,menu_h);
display->primary_surface->DrawLine(display->primary_surface,menu_x+display_faktor_x*display->max_x/2,menu_y+display_faktor_y,menu_x+display_faktor_x*display->max_x/2,menu_y+display_faktor_y*display->max_y-display_faktor_y);
display->primary_surface->SetColor(display->primary_surface,r,g,b,a);
display->primary_surface->DrawRectangle(display->primary_surface,menu_x,menu_y,menu_w,menu_h);
display->primary_surface->DrawLine(display->primary_surface,menu_x+display_faktor_x*display->max_x/2,menu_y+display_faktor_y,menu_x+display_faktor_x*display->max_x/2,menu_y+display_faktor_y*display->max_y-display_faktor_y);