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Report From: Delphi-BCB/Midas/TClientDataSet    [ Add a report in this area ]  
Report #:  90009   Status: Closed
TClientDataset failure when string contains unicode(UTF-8) character
Project:  Delphi Build #:  12.0.3420.21218
Version:    12.3 Submitted By:   Hartmut von Hoff
Report Type:  Crash / Data loss / Total failure Date Reported:  11/29/2010 3:34:39 AM
Severity:    Critical / Show Stopper Last Updated: 11/30/2010 6:26:23 PM
Platform:    All platforms Internal Tracking #:  
Resolution: Test Case Error (Resolution Comments) Resolved in Build: : None
Duplicate of:  None
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Description
TClientDataset failure when string contains unicode(UTF-8) character. If you write some kind of UTF-8 characters into a TDBGrid which has a TClientDataSet linked via DataSource, after post the character will be shown as '???'.
Steps to Reproduce:
See sample application.
1. Copy the cyrillic word of the TEdit component into clipboard.
2. Press the 'Create DataSet' button.
3. Paste the word from the clipboard into the DBGrid-Cell and post it.
Workarounds
Nothing
Attachment
90009.zip
Comments

Tomohiro Takahashi at 11/29/2010 6:06:12 PM -
In my environment(Delphi 2009(12.0.3420.21218) on Vista(Japanese Edition)), I rebuild your project and run it.
But, I can not reproduce your issue. It works fine.

Any othe information to reproduce your issue?

Hartmut von Hoff at 11/30/2010 3:01:33 AM -
We tried it on German (European) XP-Professional(32-Bit) and on Win7 (64-Bit). Maybe we have to configure anything on language/region-options? But other components are working fine, it only happens with TClientDataSet.

Tomohiro Takahashi at 11/30/2010 6:25:16 PM -
In your application, you use TStringField for TClientDataSet.
But, we need to use TWideStringField when handling Unicode(e.g., Russian, Japanese, Chinese etc...) characters.
So, please try assign TWideStringField.

Tomohiro Takahashi at 11/30/2010 5:29:21 PM -
Indeed, if I download only 'Project2.exe' you attached and run it on WinXP(English), I can reproduce your issue.
I will test this case with other Delphi versions and OSs.

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