Add:gui/internal:some comments

git-svn-id: https://navit.svn.sourceforge.net/svnroot/navit/trunk@1004 ffa7fe5e-494d-0410-b361-a75ebd5db220

diff --git a/navit/src/gui/internal/gui_internal.c b/navit/src/gui/internal/gui_internal.c
index 503613a..8c4e147 100644 (file)
--- a/navit/src/gui/internal/gui_internal.c
+++ b/navit/src/gui/internal/gui_internal.c
@@ -230,9 +230,13 @@ gui_internal_button(struct gui_priv *this, int pressed, int button, struct point
 {
        struct graphics *gra=this->gra;
        struct point pnt;
-       if (!this->menu) {
-               if (!navit_handle_button(this->nav, pressed, button, p, NULL))
+       
+       // if still on the map (not in the menu, yet):
+       if (!this->menu) {      
+               // check whether the position of the mouse changed during press/release OR if it is the scrollwheel 
+               if (!navit_handle_button(this->nav, pressed, button, p, NULL) || button >=4)
                        return;
+               // draw menu
                this->menu++;
                graphics_draw_mode(gra, draw_mode_begin);
                gui_internal_clear(this);
@@ -240,6 +244,8 @@ gui_internal_button(struct gui_priv *this, int pressed, int button, struct point
                graphics_draw_mode(gra, draw_mode_end);
                return;
        }
+       
+       // if already in the menu:
        if (pressed) {
                graphics_draw_mode(gra, draw_mode_begin);
                gui_internal_highlight(this, p);