/usr/include/FL/Fl_Gl_Window.H is in libfltk1.1-dev 1.1.10-17.
This file is owned by root:root, with mode 0o644.
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// "$Id: Fl_Gl_Window.H 5322 2006-08-17 09:49:43Z matt $"
//
// 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 GLContext
typedef void* GLContext; // actually a GLXContext or HGLDC
#endif
class Fl_Gl_Choice; // structure to hold result of glXChooseVisual
class FL_EXPORT Fl_Gl_Window : public Fl_Window {
int mode_;
const int *alist;
Fl_Gl_Choice *g;
GLContext context_;
char valid_f_;
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_f_ & 1;}
void valid(char v) {if (v) valid_f_ |= 1; else valid_f_ &= 0xfe;}
void invalidate();
char context_valid() const {return valid_f_ & 2;}
void context_valid(char v) {if (v) valid_f_ |= 2; else valid_f_ &= 0xfd;}
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 5322 2006-08-17 09:49:43Z matt $".
//
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