Gets the offset of the private data for instances of @g_class.
This is how many bytes you should add to the instance pointer of a class in order to get the private data for the type represented by @g_class.
You can only call this function after you have registered a private data area for @g_class using g_type_class_add_private().
the offset, in bytes
2.38
See Implementation
Gets the offset of the private data for instances of @g_class.
This is how many bytes you should add to the instance pointer of a class in order to get the private data for the type represented by @g_class.
You can only call this function after you have registered a private data area for @g_class using g_type_class_add_private().