Move dnd and character-composition related functions from Fl_System_Driver to Fl_Screen_Driver

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11489 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 7 insertions, 0 deletions

diff --git a/FL/Fl_Screen_Driver.H b/FL/Fl_Screen_Driver.H
index cd847684e..752b701b2 100644
--- a/FL/Fl_Screen_Driver.H
+++ b/FL/Fl_Screen_Driver.H
@@ -98,6 +98,13 @@ public:
   virtual int has_marked_text() { return 0; }
   virtual void reset_marked_text() {}
   virtual void insertion_point_location(int x, int y, int height) {}
+  // implement so text-editing widgets support dead keys
+  virtual int compose(int &del) {del = 0; return 0;}
+  // default implementation may be enough
+  virtual void compose_reset();
+  // implement to support drag-n-drop. use_selection = 1 means the GUI is welcome to display
+  // the selected text during the D&D operation
+  virtual int dnd(int use_selection = 0) {return 0;}
 };