How to make global value for URL->bstrVal?

I am currently using this function inside my program.

void CBar::DocumentComplete(IDispatch *pDisp, VARIANT *URL)

How to make the BSTR value inside URL->bstrVal available for the whole program? I need to access the url开发者_开发百科 value from other function.

When you use this function (call it), you have the URL and can access the bstrVal member.