- First, make sure that your system use the correct "System Local" language of the Non-English characters you use in DataEase:

The system locale determines the default character set (letters, symbols, and numbers) and font used to enter and display information in programs that don't use Unicode (like DataEase). This allows non-Unicode programs to run on your computer using the specified language. Selecting a different language for the system locale doesn't affect the language in menus and dialog boxes for Windows or other programs that do use Unicode.

1. From the 'Search box' in the start menu   of your computer, type in "Region";

2. From the Region box, go to the "Administrative" tab and make sure that the current system locale is set for the correct language. If not, click on the "Change System Local" button and change the language;

      3. Click OK and restart your computer.

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- Now, DataEase Application part. You need to make sure that DataEase use the correct character encoding (CharSet) of your language.
(If you want to read more about that:  https://en.wikipedia.org/wiki/Character_encoding )

      1. Go to your application folder and open the file "RDRRAAAA.INI" ( in a notepad);

      2. In the [Interface] section, you will find two properties called "InitialCodepage" and "ApplicationCharset";




3. Make sure that these 2 settings are set with the correct values of your language according to the below table: 

Charset Name	Charset Value	Code-Page ID
ANSI_CHARSET	0	1252
DEFAULT_CHARSET	1	0
SYMBOL_CHARSET	2	0
SHIFTJIS_CHARSET	128	932
HANGUL_CHARSET	129	949
GB2312_CHARSET	134	936
CHINESEBIG5_CHARSET	136	950
GREEK_CHARSET	161	1253
TURKISH_CHARSET	162	1254
HEBREW_CHARSET	177	1255
ARABIC_CHARSET	178	1256
BALTIC_CHARSET	186	1257
RUSSIAN_CHARSET	204	1251
THAI_CHARSET	222	874
EE_CHARSET	238	1250
OEM_CHARSET	255	0

Source: https://msdn.microsoft.com/en-gb/library/cc194829....

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For example:

If you use Russian, first make sure that the Local System is set to Russian (Russia), and then change the two properties in RDRRAAAA.INI of the application to be:

InitialCodepage=1251
ApplicationCharset=204

Try out and test your application you will find that you can write Russian characters into HtmlEdit and text fields

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Thai (Thailand) as well:

InitialCodepage=874
ApplicationCharset=222



.. and Arabic:

InitialCodepage=1256
ApplicationCharset=178