Unified Automation Forum

Hello all,

Thank you for let me write in this forum.

I am running a piece of code like this:

//"input_BSTR" parameter is a BSTR type variable
auto var_bstrt = _bstr_t(input_BSTR);
auto var_wchart = static_cast<wchar_t*>(var_bstrt);
auto var_wchart_2 = var_wchart;

//This next line of code is the one giving me problems
UaString result_UaString = var_wchart_2;

I am passing into "input_BSTR" a string with Japanese characters. When I read the "result_UaString" the Japanese characters on it have been modified.

So, my questions are:

- Is there a way to convert a BSTR (or _bstr_t) string to a UaString string without changing the Japanese characters? So, in my code, this would be convert "input_BSTR" (or "var_bstrt") to "result_UaString"

- If the previous point is not possible, would it be possible to convert from a std::wstring to a UaString (without changing the Japanese characters inside)?

Thank you very much for your help. It is really appreciated.
Best regards,

Ignacio

Hello Ignacio,

you can use the constructor of the UaString class taking an UTF-16 encoded string.
see: https://documentation.unified-automation.com/uasdkcpp/1.7.7/html/classUaString.html#a60619d72a3dab1c4ee0e75442742c124

example: Let's have a look at the first character "オ" with the unicode number U+30AA
The UTF-16 encoded data in memory is hex 30 AA - used in BSTR.
The UTF-8 encoded data in memory is hex E3 82 AA - used in UaString.
see also https://unicode-table.com/en/30AA/

If you can't see the "オートメーション" string in you IDE / debugger that is because your IDE does not know how decode the UaString for the watch window. However if you look at the content you should see the UTF-8 encoded data.

Thank you really much for your help, I'll appreciate it. Now we have more knowledge about how to do it thanks to your answer. Best regards,

Ignacio