[Inkscape-devel] [Inkscape- Devel][Recolor] Default Arguments Compiling Error

Hi, I have been trying to write a function with a default argument.

The function: void recolor_wheel_nodes_init(GtkWidget *widget , int obj_list_size = RECOLOR_MAX_OBJECTS ) { ..... }

This gives the following error: expected ';', ',' or ')' before '=' token

Aren't default arguments allowed in GTK ? I bet I've seen them at a few places in the codebase before.