I can't seems to pass the program arguments in the Project->Settings->Debug->Program arguements text box as type wchar_t. I have come to this conclusion because the wchar_t variable i am trying to define is not being defined with the input that is in the program arguements box. My code is as follows: wchar_t fileName[256]; void CreateFileName( wchar_t *fn ) { swprintf( fileName, L"%ls", fn); //show names wprintf(L"File Name = %ls\n", fileName ); } int main(int argc, wchar_t* argv[]) { CreateFileName(argv[0]); } if I do the following, it works fine. int main(int argc, wchar_t* argv[]) { wchar_t* name = L"firstfile"; CreateFileName(name); return 0; } I have enable unicode by including #define UNICODE and _UNICODE, i'm using visual C++ 6.0 btw. Thanks in advance for any help.

int main(int argc, wchar_t* argv[])
Should be:
int wmain(int argc, wchar_t* argv[])

Using wmain

thanks, that should do the trick.