Function gtk_source_sys::gtk_source_gutter_renderer_query_tooltip

pub unsafe extern "C" fn gtk_source_gutter_renderer_query_tooltip(
    renderer: *mut GtkSourceGutterRenderer, 
    iter: *mut GtkTextIter, 
    area: *mut GdkRectangle, 
    x: c_int, 
    y: c_int, 
    tooltip: *mut GtkTooltip
) -> gboolean