Question

I want to convert LPTSTR to string or char * to be able to write it to file using ofstream.

Any Ideas?

Answer 1

Most solutions presented in the other threads unnecessarily convert to an obsolete encoding instead of an Unicode encoding. Simply use reinterpret_cast<const char*> to write UTF-16 files, or convert to UTF-8 using WideCharToMultiByte.

To depart a bit from the question, using LPTSTR instead of LPWSTR doesn’t make much sense nowadays since the old 9x series of Windows is completely obsolete and unsupported. Simply use LPWSTR and the accompanying “wide character” (i.e., UTF-16 code unit) types like WCHAR or wchar_t everywhere.

Here is an example that (I hope) writes UTF-16 or UTF-32 (the latter on Linux/OS X):

#include <fstream>
#include <string>

int main() {
  std::ofstream stream("test.txt");  // better use L"test.txt" on Windows if possible
  std::wstring string = L"Test\n";
  stream.write(reinterpret_cast<const char*>(string.data()), string.size() * sizeof(wchar_t));
}