Navigate to the previous visited page.
It is a programming error to call this function when no previous page is available.
This function is for use when creating pages of the %GTK_ASSISTANT_PAGE_CUSTOM type.
See Implementation
Navigate to the previous visited page.
It is a programming error to call this function when no previous page is available.
This function is for use when creating pages of the %GTK_ASSISTANT_PAGE_CUSTOM type.