This has probably been asked before but I can't seem to find the solution:

std::string GetPath()

{

char buffer[MAX_PATH];

::GetSystemDirectory(buffer,MAX_PATH);

strcat(buffer,"\\version.dll");

return std::string(buffer);

}

This returns an error stating:

argument of type "char *" is incompatible with parameter of type "LPWSTR"

So yeah. Anyone got an answer?

解决方案

You need to use the ansi version:

std::string GetPath()

{

char buffer[MAX_PATH] = {};

::GetSystemDirectoryA(buffer,_countof(buffer)); // notice the A

strcat(buffer,"\\version.dll");

return std::string(buffer);

}

Or use unicode:

std::wstring GetPath()

{

wchar_t buffer[MAX_PATH] = {};

::GetSystemDirectoryW(buffer,_countof(buffer)); // notice the W, or drop the W to get it "by default"

wcscat(buffer,L"\\version.dll");

return std::wstring(buffer);

}

Rather than call the A/W versions explicitly you can drop the A/W and configure the whole project to use ansi/unicode instead. All this will do is change some #defines to replace foo with fooA/W.

Notice that you should use _countof() to avoid incorrect sizes depending on the buffers type too.