Moves forward to the next toggle (on or off) of the context class. If no
matching context class toggles are found, returns %FALSE, otherwise %TRUE.
Does not return toggles located at @iter, only toggles after @iter. Sets
@iter to the location of the toggle, or to the end of the buffer if no
toggle is found.
See the #GtkSourceBuffer description for the list of default context classes.
Moves forward to the next toggle (on or off) of the context class. If no matching context class toggles are found, returns %FALSE, otherwise %TRUE. Does not return toggles located at @iter, only toggles after @iter. Sets @iter to the location of the toggle, or to the end of the buffer if no toggle is found.
See the #GtkSourceBuffer description for the list of default context classes.