fix error if non-latin character was entered in initial value in
data type element

Traceback (most recent call last):
File "/home/beremiz/editors/DataTypeEditor.py", line 575, in OnStructureElementsGridCellChange
value = self.StructureElementsTable.GetValue(row, col)
File "/home/beremiz/editors/DataTypeEditor.py", line 80, in GetValue
return str(value)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2: ordinal not in range(128)
Traceback (most recent call last):
File "/home/beremiz/editors/DataTypeEditor.py", line 80, in GetValue
return str(value)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2: ordinal not in range(128)
Traceback (most recent call last):
File "/home/beremiz/editors/DataTypeEditor.py", line 80, in GetValue
return str(value)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2: ordinal not in range(128)

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from editors.TextViewer import TextViewer

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from plcopen.plcopen import TestTextElement

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class IECCodeViewer(TextViewer):

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    def __del__(self):

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        TextViewer.__del__(self)

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        if getattr(self, "_OnClose"):

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            self._OnClose(self)

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    def Paste(self):

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        if self.Controler is not None:

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            TextViewer.Paste(self)

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    def Search(self, criteria):

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        return [((self.TagName, "body", 0),) + result for result in TestTextElement(self.Editor.GetText(), criteria)]