Navigate to the next page.
It is a programming error to call this function when there is no next page.
This function is for use when creating pages of the #GTK_ASSISTANT_PAGE_CUSTOM type.
3.0
See Implementation
Navigate to the next page.
It is a programming error to call this function when there is no next page.
This function is for use when creating pages of the #GTK_ASSISTANT_PAGE_CUSTOM type.