std::string与LPCTSTR/LPWSTR互转

std::string ConvertLPCTSTRToString(LPCTSTR lpctstr) {
	int length = lstrlen(lpctstr);
	int size = WideCharToMultiByte(CP_UTF8, 0, lpctstr, length, nullptr, 0, nullptr, nullptr);
	if (size == 0) {
		// 转换失败处理
		return "";
	}

	std::string str(size, '\0');
	WideCharToMultiByte(CP_UTF8, 0, lpctstr, length + 1, &str[0], size, nullptr, nullptr);

	return str;
}

LPWSTR ConvertToLPWSTR(const std::string& s)
{
	LPWSTR ws = new wchar_t[s.size() + 1]; // +1 for zero at the end
	copy(s.begin(), s.end(), ws);
	ws[s.size()] = 0; // zero at the end
	return ws;
}
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