Work with strings.
Work with strings
This API is written for the international environment. In an international environment, strings in CIMPLICITY software can be multi-byte strings. If you want your code to conform to international standards, GE Fanuc recommends that you do the following when working with strings:
Use the TCHAR macros found in TCHAR.H.
Declare string buffers as TCHAR. Declare string pointers as TCHAR* or LPTSTR.
Wrap string and character constants with the _T() macro.
Use the _tcs...() functions in place of the str...() functions. For example, use _tcslen() in place of strlen().
Be careful when incrementing a pointer through a string. Remember that a logical character may occupy one or two TCHAR units. So replace code that looks like this:
for (cp = string; *cp != '\0'; ++cp)
with code that looks like this:
TCHAR const *cp;
for (cp = string; *cp != _T('\0'); cp = _tcsinc(cp))
Avoid using a variable to hold the value of a logical character. Instead, use a pointer to a character in the string. In particular, avoid the _tcsnextc() macro, because the value it § Use the functions _tccpy() and _tccmp() and string pointers instead of the = and == operators on characters.
Use GetStringTypeEx() instead of the character classification macros such as _istalpha().
Use CharUpper() and CharLower() instead of _toupper() and _tolower().
Microsoft has several good papers on writing international code on its Developer Network CD and its web site. To find documentation on the web site, go to http://msdn.microsoft.com/default.asp and search for MBBCS.
For documentation on globalization, go to http://www.microsoft.com/globaldev/.
The following book is also available:
Schmitt, David A., Internationalization Programming for Microsoft ® Windows ®, ISBN 1-57231-956-9
For more information about this book, go to http://mspress.microsoft.com/books/2323.htm.
Point Management API overview.