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-rw-r--r--src/widgets/toolbox.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/widgets/toolbox.h b/src/widgets/toolbox.h
index a1dc0770b..47a5639de 100644
--- a/src/widgets/toolbox.h
+++ b/src/widgets/toolbox.h
@@ -82,7 +82,7 @@ public:
* @param callback function to invoke when changes are pushed.
* @param cbData data to be passed on to the callback function.
*/
- PrefPusher( GtkToggleAction *act, Glib::ustring const &path, void (*callback)(GObject*) = 0, GObject *cbData = 0 );
+ PrefPusher( GtkToggleAction *act, Glib::ustring const &path, void (*callback)(GObject*) = nullptr, GObject *cbData = nullptr );
/**
* Destructor that unregisters the preference callback.
@@ -135,7 +135,7 @@ void delete_connection(GObject * /*obj*/, sigc::connection *connection);
gdouble lower, gdouble upper, gdouble step, gdouble page,
gchar const** descrLabels, gdouble const* descrValues, guint descrCount,
void (*callback)(GtkAdjustment *, GObject *),
- Inkscape::UI::Widget::UnitTracker *unit_tracker = NULL,
+ Inkscape::UI::Widget::UnitTracker *unit_tracker = nullptr,
gdouble climb = 0.1, guint digits = 3, double factor = 1.0 );
#endif /* !SEEN_TOOLBOX_H */