about overloading operators

[joaquim]

i always fail with overloading operators...i use C++11 for be more easy.
can anyone explain to me how overloading operator?

inside of class label:

HWND& operator=(const label &test)
    {
        return this->hwnd;
    }

how i use it:

SetWindowText(label1, "left mouse button down");

- SetWindowText() is for change the window caption;
- label1 is 1 instance of label.
the SetWindowText() function, 1st parameter must recive a HWND value. but i mistake with overloading operator

[tabstop]

The operator = is generally used for assignment because, well, it's the assignment operator. So presumably you would want to do some sort of assigning.

You labeled your second snippet as "how I use it" but you don't use it in the snippet (the = character does not appear anywhere), so why you think it is relevant is anybody's guess.

EDIT: Or did you want a conversion operator? That has a different name. If this is true, then IMO the correct answer is to forget about conversions and provide a getter for the hwnd member:

SetWindowText(label1.GetHWND(), "left mouse button down");