namespace callbacks {
-void OnDestroy( ui::Widget, gpointer );
-void OnExportClicked( ui::Button, gpointer );
-void OnAddMaterial( ui::Button, gpointer );
-void OnRemoveMaterial( ui::Button, gpointer );
-void OnExportMatClicked( ui::Button button, gpointer );
+ void OnDestroy(ui::Widget, gpointer);
+
+ void OnExportClicked(ui::Button, gpointer);
+
+ void OnAddMaterial(ui::Button, gpointer);
+
+ void OnRemoveMaterial(ui::Button, gpointer);
+
+ void OnExportMatClicked(ui::Button button, gpointer);
} // callbacks