Set a GtkSourceViewMarkTooltipFunc used to set tooltip on marks from the given mark category. If you also specified a function with gtk_source_view_set_mark_category_tooltip_markup_func() the markup variant takes precedence. Since 2.8
a mark category.
a GtkSourceViewMarkTooltipFunc or NULL.
user data which will be passed to func.
a function to free the memory allocated for user_data or NULL if you do not want to supply such a function.
See Implementation
Set a GtkSourceViewMarkTooltipFunc used to set tooltip on marks from the given mark category. If you also specified a function with gtk_source_view_set_mark_category_tooltip_markup_func() the markup variant takes precedence. Since 2.8