From: Abdij Bhat (Abdij.Bhat@kshema.com)
Date: Thu May 22 2003 - 02:55:35 EDT
We have a GUI software that is running on win NT/2K/XP/95/98/ME. The
software is developed using Visual Studio 6 and has a common source code
base for all supported Win OS.
The GUI software interacts with a hardware to get running data to be
displayed on the UI. The GUI is to be internationalized. The Hardware does
not understand UNICODE and can understand only ASCII. The minimum language
support of the GUI software are Chinese, Dutch, French, German, Italian,
Japanese, Portuguese, Spanish, UK Eng.
We tried having our own protocol (including Unicode BOM) to achieve this.
What we did was to push a byte stream of Unicode characters. This did not
work well since the hardware truncated the Unicode string to the first NULL
Then we tried to Ascii encode the string (i.e. if the Unicode string was
"In", the Unicode string would be "42 00 69 00", the ASCII encoded string
would be "34 32 30 30 36 39 30 30". Thus we are encoding 4 as 34 (ASCII
value), 2 as 32, 0 as 30 etc..). But I do not like the idea. This has
various pitfalls. ( Interested parties can contact me for more details!).
Also the problem is that the Hardware is an intelligent device and stores
some of the Unicode Strings. Since previous versions of GUI were Ascii and
there are huge installations of the software/hardware, chances are that
there will be hardwares having Ascii strings in them even if we migrate the
UI to Unicode. We should be thus able to handle a mix of Unicode and Ascii
Hence after a typical brainstorming session we decided to not throw Unicode
strings at the hardware at all, instead convert them to Ascii as send. We
thought of using WideCharToMultiByte() and MultiByteToWideChar() API's to do
the same. These functions use CodePage to do the conversions.
Do you think it is a wise idea to use this method?
Also since the Application can switch between languages, will there be any
And what CodePages do I use for each of these (Chinese, Dutch, French,
German, Italian, Japanese, Portuguese, Spanish, UK Eng.) languages?
Thanks and Regards,
Phone:+91 80 860 3600 (Extension 2102)
Fax: +91 80 860 3372
This archive was generated by hypermail 2.1.5 : Thu May 22 2003 - 04:15:50 EDT