GdkGLProc ()

void        (*GdkGLProc)                    (void);

gdk_gl_query_extension ()

gboolean    gdk_gl_query_extension          (void);

Indicates whether the window system supports the OpenGL extension (GLX, WGL, etc.).

gdk_gl_query_extension_for_display ()

gboolean    gdk_gl_query_extension_for_display
                                            (GdkDisplay *display);

Indicates whether the window system supports the OpenGL extension (GLX, WGL, etc.).

gdk_gl_query_version ()

gboolean    gdk_gl_query_version            (int *major,
                                             int *minor);

Returns the version numbers of the OpenGL extension to the window system.

In the X Window System, it returns the GLX version.

In the Microsoft Windows, it returns the Windows version.

gdk_gl_query_version_for_display ()

gboolean    gdk_gl_query_version_for_display
                                            (GdkDisplay *display,
                                             int *major,
                                             int *minor);

Returns the version numbers of the OpenGL extension to the window system.

In the X Window System, it returns the GLX version.

In the Microsoft Windows, it returns the Windows version.

gdk_gl_query_gl_extension ()

gboolean    gdk_gl_query_gl_extension       (const char *extension);

Determines whether a given OpenGL extension is supported.

There must be a valid current rendering context to call gdk_gl_query_gl_extension().

gdk_gl_query_gl_extension() returns information about OpenGL extensions only. This means that window system dependent extensions (for example, GLX extensions) are not reported by gdk_gl_query_gl_extension().

gdk_gl_get_proc_address ()

GdkGLProc   gdk_gl_get_proc_address         (const char *proc_name);

Returns the address of the OpenGL, GLU, or GLX function.