Using Fl_Plugin feature to automatically draw OpenGL (sub)windows. No extra coding needs to be done. Just call Fl_Printer::print_widget(...). The Fl_Gl_Printer device can (and should) be removed or at least made inaccessible.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7280 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 13 insertions, 6 deletions

diff --git a/FL/Fl_Widget.H b/FL/Fl_Widget.H
index 95351f9f2..a3a2d6ad6 100644
--- a/FL/Fl_Widget.H
+++ b/FL/Fl_Widget.H
@@ -930,16 +930,23 @@ public:
       \note This method is provided to avoid dynamic_cast.
       \todo More documentation ...
    */
-  virtual Fl_Group* as_group() const {return 0;}
+  virtual Fl_Group* as_group() {return 0;}
 
   /** Returns an Fl_Window pointer if this widget is an Fl_Window.
+   
+   \retval NULL if this widget is not derived from Fl_Window.
+   \note This method is provided to avoid dynamic_cast.
+   \todo More documentation ...
+   */
+  virtual Fl_Window* as_window() {return 0;}
   
-      \retval NULL if this widget is not derived from Fl_Window.
-      \note This method is provided to avoid dynamic_cast.
-      \todo More documentation ...
+  /** Returns an Fl_Gl_Window pointer if this widget is an Fl_Gl_Window.   
+   \retval NULL if this widget is not derived from Fl_Gl_Window.
+   \note This method is provided to avoid dynamic_cast.
+   \todo More documentation ...
    */
-  virtual Fl_Window* as_window() const {return 0;}
-
+  virtual class Fl_Gl_Window* as_gl_window() {return 0;}
+  
   /** For back compatibility only.
       \deprecated Use selection_color() instead.
   */