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Diffstat (limited to 'src/Fl_Gl_Window_Driver.H')
| -rw-r--r-- | src/Fl_Gl_Window_Driver.H | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Fl_Gl_Window_Driver.H b/src/Fl_Gl_Window_Driver.H index 79f696905..ee3332545 100644 --- a/src/Fl_Gl_Window_Driver.H +++ b/src/Fl_Gl_Window_Driver.H @@ -70,7 +70,7 @@ public: virtual void resize(int /*is_a_resize*/, int /*w*/, int /*h*/) {} virtual char swap_type(); virtual void swap_interval(int) { } - virtual int swap_interval() { return -1; } + virtual int swap_interval() const { return -1; } virtual int flush_begin(char&) {return 0;} virtual void gl_hide_before(void *&) {} // the default implementation may be enough static Fl_Gl_Choice *find_begin(int m, const int *alistp); |