How do I convert a *char to _TCHAR?

This is what I tried but it didn't do anything.

Mult开发者_如何学GoiByteToWideChar(CP_ACP, MB_COMPOSITE, optarg, -1, localdir, 0);

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in the start of the function add: "USES_CONVERSION;" and it allows you to use the macros: "A2T", "T2A" ... so you need A2T enjoy

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Actually you can use many way: 1. wstreamstring << szYourCharStar;

1. _bstr_t bstr = szYourCharStar;

Those way can minumize your effort of resource management, if you use other way, you might need to free up the resource.

For instance:

_com_util::Convert_To_WCHAR ?? forget the name.