Add a ccallback type which is used to invoke callbacks passed to a vfunc

Used when overriding methods like gtk_container_forall wich pass in a
callback that needs to be executed on internal children:
    def do_forall(self, callback, userdata):
        callback(self.custom_child, userdata)

https://bugzilla.gnome.org/show_bug.cgi?id=644926

Co-authored-by: Tomeu Vizoso <tomeu.vizoso@collabora.co.uk>
Co-authored-by: Simon Schampijer <simon@laptop.org>

Signed-off-by: Martin Pitt <martinpitt@gnome.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/gi/pygi-invoke.h b/gi/pygi-invoke.h
index 0aa75806..051bc8d6 100644
--- a/gi/pygi-invoke.h
+++ b/gi/pygi-invoke.h
@@ -30,6 +30,9 @@
 #include "pygi-invoke-state-struct.h"
 G_BEGIN_DECLS
 
+PyObject *pygi_callable_info_invoke (GIBaseInfo *info, PyObject *py_args,
+                                     PyObject *kwargs, PyGICallableCache *cache,
+                                     GCallback function_ptr, gpointer user_data);
 PyObject *_wrap_g_callable_info_invoke (PyGIBaseInfo *self, PyObject *py_args,
                                         PyObject *kwargs);