How do I use WTL::CHyperLink?

I am trying to use WTL::CHyperLink in order to display a clickable link on my application.

According to this article, I need to attach it to a Static Text control.

So, in my GUI, I have now created a static text control with an ID of IDC_LINK

In my DDX MAP:

BEGIN_DDX_MAP(MyDialog)
    DDX_CONTROL_HANDLE(IDC_LINK, m_link)
END_DDX_MAP()

and as a member variable:

CHyperLink m_link;

However, I am always left with this:

Error C2679: Binary Operator '=': No operator accepting a right-hand operant of type 'ATL::CWindow' (or no suitable conversion possible)

Does anyone know what I am doing wrong?

Solution

WTL CHyperLink is a custom control implementation class and unlike other classes like CEdit, which are thin HWND wrappers, you cannot initialize the control by using assignment operator with window handle (which is what DDX_CONTROL_HANDLE map tries to do) and by just manipulating window handle only in general. You are supposed to either create a control window from scratch (CHyperLink::Create), or take a pre-created static control and subclass it using CHyperLink::SubclassWindow.

With static control already existing in the dialog template, which is supposed to back your hyperlink, you can try DDX_CONTROL macro instead of DDX_CONTROL_HANDLE because it attempts to initialize by subclassing using SubclassWindow call.

Non-DDX initialization code snippet is here: SubclassWindow + SetHyperLink calls in WM_INITDIALOG handler.

You asked a similar question before: Error when trying to hook up a control with DDX_CONTROL And at that time you confused the same two DDX macros the other way...