Romanian character not read properly in editbox of activex control in vc++.

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VC++

I have a vc++ based ActiveX control which has edit box which shows "?" While typing romanian s cedilla.I am using GetWindowText() to get the text. Its legacy project and multibyte is set as charater type in project settings.Only S/T cedilla I am seeing this issue.

What I have tried:

On copy paste of the text to editbox, it is printed properly but on save it becomes "?" again.