--- a/graphics/FBD_Objects.py	Fri Sep 05 18:12:23 2008 +0200
+++ b/graphics/FBD_Objects.py	Fri Sep 05 18:13:18 2008 +0200
@@ -64,9 +64,12 @@
         block.Outputs = [output.Clone(block) for output in self.Outputs]
         return block
     
-    # Destructor
-    def __del__(self):
+    def Flush(self):
+        for input in self.Inputs:
+            input.Flush()
         self.Inputs = []
+        for output in self.Outputs:
+            output.Flush()
         self.Outputs = []
     
     # Returns the RedrawRect
@@ -434,10 +437,13 @@
             variable.Output = self.Output.Clone(variable)
         return variable
     
-    # Destructor
-    def __del__(self):
-        self.Input = None
-        self.Output = None
+    def Flush(self):
+        if self.Input is not None:
+            self.Input.Flush()
+            self.Input = None
+        if self.Output is not None:
+            self.Output.Flush()
+            self.Output = None
     
     # Returns the RedrawRect
     def GetRedrawRect(self, movex = 0, movey = 0):
@@ -672,9 +678,10 @@
         self.RefreshConnectors()
         self.RefreshNameSize()
     
-    # Destructor
-    def __del__(self):
-        self.Connector = None
+    def Flush(self):
+        if self.Connector:
+            self.Connector.Flush()
+            self.Connector = None
     
     # Returns the RedrawRect
     def GetRedrawRect(self, movex = 0, movey = 0):