Don't grab navkeys with modifiers, as the app may want them. STR #3104

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10261 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Group.H

@@ -30,8 +30,13 @@
   The Fl_Group class is the FLTK container widget. It maintains
   an array of child widgets. These children can themselves be any widget
   including Fl_Group. The most important subclass of Fl_Group
-  is Fl_Window, however groups can also be used to control radio buttons 
+  is Fl_Window, however groups can also be used to control radio buttons
   or to enforce resize behavior.
+
+  The tab and arrow keys are used to move the focus between widgets of
+  this group, and to other groups. The only modifier grabbed is shift
+  (for shift-tab), so that ctrl-tab, alt-up, and such are free
+  for the app to use as shortcuts.
 */
 class FL_EXPORT Fl_Group : public Fl_Widget {
 

src/Fl_Group.cxx

@@ -122,8 +122,10 @@ static int send(Fl_Widget* o, int event) {
 }
 
 // translate the current keystroke into up/down/left/right for navigation:
-#define ctrl(x) (x^0x40)
 static int navkey() {
+  // The app may want these for hotkeys, check key state
+  if (Fl::event_state(FL_CTRL | FL_ALT | FL_META)) return 0;
+
   switch (Fl::event_key()) {
   case 0: // not an FL_KEYBOARD/FL_SHORTCUT event
     break;