Gets the default value of @param as a pointer to a #GValue.
The #GValue will remain value for the life of @param.
Return: a pointer to a #GValue which must not be modified
2.38
See Implementation
Gets the default value of @param as a pointer to a #GValue.
The #GValue will remain value for the life of @param.
Return: a pointer to a #GValue which must not be modified