//// "$Id: Fl_Gl_Window.H 4288 2005-04-16 00:13:17Z mike $"//// OpenGL header file for the Fast Light Tool Kit (FLTK).//// Copyright 1998-2005 by Bill Spitzak and others.//// This library is free software; you can redistribute it and/or// modify it under the terms of the GNU Library General Public// License as published by the Free Software Foundation; either// version 2 of the License, or (at your option) any later version.//// This library is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU// Library General Public License for more details.//// You should have received a copy of the GNU Library General Public// License along with this library; if not, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307// USA.//// Please report all bugs and problems on the following page:////     http://www.fltk.org/str.php//#ifndef Fl_Gl_Window_H#define Fl_Gl_Window_H#include "Fl_Window.H"#ifndef GLContexttypedef void* GLContext; // actually a GLXContext or HGLDC#endifclass Fl_Gl_Choice; // structure to hold result of glXChooseVisualclass FL_EXPORT Fl_Gl_Window : public Fl_Window {  int mode_;  const int *alist;  Fl_Gl_Choice *g;  GLContext context_;  char valid_;  char damage1_; // damage() of back buffer  virtual void draw_overlay();  void init();  void *overlay;  void make_overlay();  friend class _Fl_Gl_Overlay;  static int can_do(int, const int *);  int mode(int, const int *);public:  void show();  void show(int a, char **b) {Fl_Window::show(a,b);}  void flush();  void hide();  void resize(int,int,int,int);  char valid() const {return valid_;}  void valid(char v) {valid_ = v;}  void invalidate();  static int can_do(int m) {return can_do(m,0);}  static int can_do(const int *m) {return can_do(0, m);}  int can_do() {return can_do(mode_,alist);}  Fl_Mode mode() const {return (Fl_Mode)mode_;}  int mode(int a) {return mode(a,0);}  int mode(const int *a) {return mode(0, a);}  void* context() const {return context_;}  void context(void*, int destroy_flag = 0);  void make_current();  void swap_buffers();  void ortho();  int can_do_overlay();  void redraw_overlay();  void hide_overlay();  void make_overlay_current();  ~Fl_Gl_Window();  Fl_Gl_Window(int W, int H, const char *l=0) : Fl_Window(W,H,l) {init();}  Fl_Gl_Window(int X, int Y, int W, int H, const char *l=0)    : Fl_Window(X,Y,W,H,l) {init();}};#endif//// End of "$Id: Fl_Gl_Window.H 4288 2005-04-16 00:13:17Z mike $".//