程序片段---- stringToLPCWSTR

http://blog.csdn.net/jfkidear/article/details/26363711

LPCWSTR stringToLPCWSTR(std::string orig)
{
	size_t origsize = orig.length() + 1;
	const size_t newsize = 100;
	size_t convertedChars = 0;
	wchar_t *wcstring = (wchar_t *)malloc(sizeof(wchar_t)*(orig.length() - 1));
	mbstowcs_s(&convertedChars, wcstring, origsize, orig.c_str(), _TRUNCATE);
	return wcstring;
}