diff --git a/src/gui_qt/graphs/graphwindow.py b/src/gui_qt/graphs/graphwindow.py
index 029d9ff..e0a63f0 100644
--- a/src/gui_qt/graphs/graphwindow.py
+++ b/src/gui_qt/graphs/graphwindow.py
@@ -48,6 +48,7 @@ class QGraphWindow(QtWidgets.QGraphicsView, Ui_GraphWindow):
         self.real_plots = {}
         self.imag_plots = {}
         self.error_plots = {}
+        self.drawings = {}
 
         self._special_needs = []
         self._external_items = []
@@ -343,6 +344,10 @@ class QGraphWindow(QtWidgets.QGraphicsView, Ui_GraphWindow):
 
         return True
 
+    def addDrawing(self, obj):
+        self.drawings[obj.id] = obj
+        self.graphic.addItem(obj.drawing)
+
     def closeEvent(self, evt: QtGui.QCloseEvent):
         if not self.closable:
             evt.ignore()