--- a/Viewer.py	Fri Dec 04 15:22:57 2009 +0100
+++ b/Viewer.py	Fri Dec 04 15:25:36 2009 +0100
@@ -1101,6 +1101,22 @@
 #                           Popup menu functions
 #-------------------------------------------------------------------------------
 
+    def PopupForceMenu(self):
+        iec_path = self.GetElementIECPath(self.SelectedElement)
+        if iec_path is not None:
+            menu = wx.Menu(title='')
+            new_id = wx.NewId()
+            AppendMenu(menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=_("Force value"))
+            #self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(base_type), id=new_id)
+            new_id = wx.NewId()
+            AppendMenu(menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=_("Release value"))
+            #self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(base_type), id=new_id)
+            if self.SelectedElement.IsForced():
+                menu.Enable(new_id, True)
+            else:
+                menu.Enable(new_id, False)
+            self.PopupMenu(menu)
+
     def PopupBlockMenu(self, connector = None):
         if connector is not None and connector.IsCompatible("BOOL"):
             type = self.Controler.GetEditedElementType(self.TagName, self.Debug)

--- a/graphics/GraphicCommons.py	Fri Dec 04 15:22:57 2009 +0100
+++ b/graphics/GraphicCommons.py	Fri Dec 04 15:25:36 2009 +0100
@@ -185,22 +185,30 @@
     def __init__(self):
         self.LastValue = None
         self.Value = None
+        self.LastForced = False
+        self.Forced = False
         self.Inhibited = False
     
     def Inhibit(self, inhibit):
         self.Inhibited = inhibit
         if not inhibit and self.LastValue is not None:
+            self.Forced = self.LastForced
             self.SetValue(self.LastValue)
             self.LastValue = None
         
-    def NewValue(self, tick, value):
+    def NewValue(self, tick, value, forced=False):
         if self.Inhibited:
             self.LastValue = value
+            self.LastForced = forced
         else:
+            self.Forced = forced
             self.SetValue(value)
 
     def SetValue(self, value):
         self.Value = value
+        
+    def IsForced(self):
+        return self.Forced
 
 #-------------------------------------------------------------------------------
 #                               Debug Viewer Class
@@ -665,6 +673,8 @@
         wx.CallAfter(self.Parent.SetCurrentCursor, 0)
         self.SetSelected(True)
         self.oldPos = None
+        if self.Parent.Debug:
+            self.Parent.PopupForceMenu()
 
     # Method called when a LeftDClick event have been generated
     def OnLeftDClick(self, event, dc, scaling):