diff -r 8a770e8d745a -r 76b2facf14a2 PLCOpenEditor.py
--- a/PLCOpenEditor.py	Mon Jan 28 11:15:24 2008 +0100
+++ b/PLCOpenEditor.py	Mon Jan 28 11:42:17 2008 +0100
@@ -1371,7 +1371,10 @@
                     self.RefreshToolBar()
     
     def OnProjectTreeRightUp(self, event):
-        cursor_pos = event.GetPosition()
+        if wx.Platform == '__WXMSW__':
+            cursor_pos = event.GetPoint()
+        else:
+            cursor_pos = event.GetPosition()
         selected = self.ProjectTree.GetSelection()
         if self.ProjectTree.GetPyData(selected) == ITEM_POU:
             name = self.ProjectTree.GetItemText(selected)