extern void (*vid_menudrawfn)(void);
extern void (*vid_menukeyfn)(int key);
-extern int vid_hidden;
-extern int vid_activewindow;
+extern qboolean vid_hidden;
+extern qboolean vid_activewindow;
extern cvar_t vid_hardwaregammasupported;
-extern int vid_usinghwgamma;
+extern qboolean vid_usinghwgamma;
extern cvar_t vid_fullscreen;
extern cvar_t vid_width;
extern qboolean isG200;
extern qboolean isRagePro;
-// LordHavoc: GLX_SGI_video_sync and WGL_EXT_swap_control
+// LordHavoc: GLX_SGI_swap_control and WGL_EXT_swap_control
extern int gl_videosyncavailable;
-int GL_OpenLibrary(const char *name);
-void GL_CloseLibrary(void);
void *GL_GetProcAddress(const char *name);
int GL_CheckExtension(const char *name, const dllfunction_t *funcs, const char *disableparm, int silent);