Added support for keyboard shortcuts to Fl_Input_ derived widgets (STR #1770). Code added for Fluid. Documentation updated.

This commit must be considered partial because there is no shortcut handling for Fl_Text_Display derived widgets or Fl_Value_Input which is derived form Fl_Valuator.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6109 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Input_.H

@@ -58,6 +58,7 @@ class FL_EXPORT Fl_Input_ : public Fl_Widget {
   int xscroll_, yscroll_;
   int mu_p;
   int maximum_size_;
+  int shortcut_;
 
   uchar erase_cursor_only;
   uchar textfont_;
@@ -119,6 +120,9 @@ public:
   int undo();
   int copy_cuts();
 
+  int shortcut() const {return shortcut_;}
+  void shortcut(int s) {shortcut_ = s;}
+
   Fl_Font textfont() const {return (Fl_Font)textfont_;}
   void textfont(uchar s) {textfont_ = s;}
   uchar textsize() const {return textsize_;}