pub unsafe extern "C" fn gdk_surface_create_gl_context(
surface: *mut GdkSurface,
error: *mut *mut GError,
) -> *mut GdkGLContext
pub unsafe extern "C" fn gdk_surface_create_gl_context(
surface: *mut GdkSurface,
error: *mut *mut GError,
) -> *mut GdkGLContext