Function gtk_source_sys::gtk_source_gutter_renderer_query_activatable

pub unsafe extern "C" fn gtk_source_gutter_renderer_query_activatable(
    renderer: *mut GtkSourceGutterRenderer, 
    iter: *mut GtkTextIter, 
    area: *mut GdkRectangle, 
    event: *mut GdkEvent
) -> gboolean