diff -r a375e31bf312 -r c1298e7ffe3a dialogs/FindInPouDialog.py
--- a/dialogs/FindInPouDialog.py	Sun Mar 05 00:38:25 2017 +0000
+++ b/dialogs/FindInPouDialog.py	Fri Mar 24 12:07:47 2017 +0000
@@ -1,39 +1,45 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
-#based on the plcopen standard. 
+# This file is part of Beremiz, a Integrated Development Environment for
+# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
 #
-#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
+# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
 #
-#See COPYING file for copyrights details.
+# See COPYING file for copyrights details.
 #
-#This library is free software; you can redistribute it and/or
-#modify it under the terms of the GNU General Public
-#License as published by the Free Software Foundation; either
-#version 2.1 of the License, or (at your option) any later version.
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
 #
-#This library is distributed in the hope that it will be useful,
-#but WITHOUT ANY WARRANTY; without even the implied warranty of
-#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-#General Public License for more details.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
 #
-#You should have received a copy of the GNU General Public
-#License along with this library; if not, write to the Free Software
-#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 import wx
+from plcopen.plcopen import *
 
-class FindInPouDialog(wx.Frame):
+class FindInPouDialog(wx.Dialog):
 
+    def _init_icon(self, parent):
+        if parent and parent.icon:
+                self.SetIcon(parent.icon)
+
+    
     def __init__(self, parent):
-        wx.Frame.__init__(self, parent, title=_("Find"), 
-              size=wx.Size(400, 250), style=wx.CAPTION|
+        wx.Dialog.__init__(self, parent, title=_("Find"),         
+              size=wx.Size(500, 280), style=wx.CAPTION|
                                             wx.CLOSE_BOX|
                                             wx.CLIP_CHILDREN|
-                                            wx.RESIZE_BORDER|
-                                            wx.STAY_ON_TOP)
+                                            wx.RESIZE_BORDER)
         
+        self._init_icon(parent)
         panel = wx.Panel(self, style=wx.TAB_TRAVERSAL)
         
         main_sizer = wx.FlexGridSizer(cols=1, hgap=5, rows=2, vgap=5)
@@ -53,6 +59,7 @@
         
         self.FindPattern = wx.TextCtrl(panel)
         self.Bind(wx.EVT_TEXT, self.OnFindPatternChanged, self.FindPattern)
+        self.Bind(wx.EVT_CHAR_HOOK, self.OnEscapeKey)
         patterns_sizer.AddWindow(self.FindPattern, flag=wx.GROW)
         
         params_sizer = wx.BoxSizer(wx.HORIZONTAL)
@@ -101,16 +108,21 @@
         self.Bind(wx.EVT_BUTTON, self.OnFindButton, self.FindButton)
         buttons_sizer.AddWindow(self.FindButton, border=5, flag=wx.RIGHT)
         
-        self.CloseButton = wx.Button(panel, label=("Close"))
+        self.CloseButton = wx.Button(panel, label=_("Close"))
         self.Bind(wx.EVT_BUTTON, self.OnCloseButton, self.CloseButton)
         buttons_sizer.AddWindow(self.CloseButton)
+
+        self.StatusLabel = wx.StaticText(panel, label= "")
+        controls_sizer.AddWindow(self.StatusLabel, flag=wx.ALIGN_CENTER_VERTICAL)
         
         panel.SetSizer(main_sizer)
+        main_sizer.Fit(self)
         
         self.ParentWindow = parent
         
         self.Bind(wx.EVT_CLOSE, self.OnCloseFrame)
-        
+        self.infosPrev = {}
+        self.criteria = {}
         self.FindPattern.SetFocus()
         self.RefreshButtonsState()
     
@@ -126,17 +138,41 @@
         self.Hide()
         event.Skip()
 
+    def OnEscapeKey(self, event):
+        keycode = event.GetKeyCode()
+        if keycode == wx.WXK_ESCAPE:
+            self.OnCloseButton(event)
+        else:
+            event.Skip()
+
     def OnFindPatternChanged(self, event):
         self.RefreshButtonsState()
         event.Skip()
 
+    def SetStatusText(self, msg):
+        self.StatusLabel.SetLabel(msg)
+        self.Layout()
+        
     def OnFindButton(self, event):
         infos = {
             "find_pattern": self.FindPattern.GetValue(),
             "wrap": self.WrapSearch.GetValue(),
             "case_sensitive": self.CaseSensitive.GetValue(),
-            "regular_expression": self.RegularExpressions.GetValue()}
-        wx.CallAfter(self.ParentWindow.FindInPou,
-            {True: 1, False:-1}[self.Forward.GetValue()],
-            infos)
+            "regular_expression": self.RegularExpressions.GetValue(),
+            "filter": "all"}
+
+        if self.infosPrev != infos:
+            self.infosPrev = infos
+            message = ""
+            try:
+                self.criteria = infos
+                CompilePattern(self.criteria)
+            except:
+                self.criteria.clear()
+                message = _("Syntax error in regular expression of pattern to search!")
+            self.SetStatusText(message)
+        if len(self.criteria) > 0:
+            wx.CallAfter(self.ParentWindow.FindInPou,
+                {True: 1, False:-1}[self.Forward.GetValue()],
+                self.criteria)
         event.Skip()