C++ convert UnicodeString into String

Question

Please help me somebody to convert unicodestring into string

This is how i am getting unicodestring

UnicodeString _str = OpenDialog1->FileName;

Or if it possible to write into file unicode string with ifstream or something like that?

Thanks

Answer 1

Depending on your needs, assign the UnicodeString to an AnsiString or a UTF8String, and then write that to your file instead of the original UnicodeString itself:

UnicodeString _str = OpenDialog1->FileName; 
AnsiString _astr = _str;

Or:

UnicodeString _str = OpenDialog1->FileName; 
UTF8String _ustr = _str;

To pass an AnsiString/UTF8String to an STL function, you have to either:

1) use the c_str() method:

stream << _astr.c_str();

2) construct a temp std::string:

stream << std::string(_astr.c_str(), _astr.Length());

3) in the case of AnsiString only, specify the VCL_IOSTREAM define in your project to enable AnsiString's own <<< and >> operators:

stream << _astr;