pwsz string confusion

I have never posted before so I am sorry if I am not clear. I am trying to use a third party DLL written in c++ on 2005 and all I have is some very poor documentation. I am dynamically linking to the DLL and using the Ordinal value read from Dependency walker to get a pointer to a method in the DLL. Such as (LPFNDDLLZC) 开发者_JAVA百科GetProcAddress(hHILCdll, (LPCSTR)15);

My code is written in C++ compiled in Microsoft VS 6.0, I can not turn on the UNICODE defines or I will break existing code.

The documentation for the DLL says all string arguments are pwsz which I believe means pointer to a wide char string null terminated.

I have tried passing in a pointer to an unsigned short, BSTR and various other things and the DLL crashes on the string. I am totally lost as to why, I believe it has to do with my pwsz string construction and I'm lost as to how to fix this. I have read so may articles related but nothing works.

Can anyone help? I can post code if need be.

Thanks.

You could use MultiByteToWideChar to turn your LPSTR into an LPWSTR which should solve your problem.

Thanks to everyone. I did finally get a copy of the DLL source and my problem wasn't my string construction it was the poor documentation. Turns out they are using double pointers, fixes a ton of things!