Converting between WCHAR* to wstring without use of constructor

Question

I have a wchar array I need to write data into using a winapi function, and I want to get it in a std::wstring , I know std::wstring t(wText); works but I can't have it declared in an an if statement because it wouldn't exist outside that scope. Also I can't call the constructor in this fashion:

    WCHAR wText[256];

    std::wstring t = L"";
    if (somecondition)
    {
        t = t(wText); 
    }

What can I do? I want the wstring to be equal to "" when the condition is not met and when it is met I want to get a WCHAR array into it.

Answer 1

你可以通过调用表达式中的构造函数来构造一个临时的std::wstring对象：

t = std::wstring(wText);