Hi Thorsten wrote:
"David Turner" <dkturner@telkomsa.net> wrote in message news:30053.165.165.239.17.1078382983.squirrel@webmail.telkomsa.net... [snip]
The only real problem with "why not" is that gui widgets have shallow copy semantics.
And why is that a problem?
Because it's surprising to the user (I think). More to the point, there is a very real problem with creating popup windows. Remember that the window acts as a factory for all other widgets, including popup (child) windows. If I were to use the "why not" syntax, I would have to pass in the owner window as the first parameter of the constructor, as in: window w; button b(w, "Click here"); w.contain(b); Now consider creating a popup window. The natural syntax is: window w; window p(w); But now I've invoked the copy constructor of p, which isn't what I wanted. The way to make it work properly is to force new windows to be constructed with a title: window w("Example Window"); window p(w, "Popup Window"); This is probably the "best" approach, but it still leaves some room for user error. Regards David Turner