>Columns, headers and pages cannot (visualy) be subclassed.
>Why is this and how should one deal with this?
>
>Example: when a user clicks a page in a pageframe i want its caption to turn bold so the user can see he/she has seen the page.
>I now have 'This.FontBold=.T.' in the Click() of all the applications pages (about 70 pages total). Now the user decided he/she doesn't want the page's caption to turn bold but red. Now i have to change the code at 70 places! This cannot be the goal of OOP.
>

Well... if you followed rule number one this will be easy!

You should NOT use the base classes directly. Subclass EVERY base class. Then use those classes in your ap.

So, if you did the above... you are using MyPageFrame as opposed to the pageframe base class.

In the MyPageFrame class you put your code in the click event...

thisform.FontBold = .t.

Now... that code will be in EVERY page frame you use... as long as you use MyPageFrame when you build your forms.

So, see how simple it would be to change it to...

thiform.ForeColor = rgb(255,0,0)

??????????????

BOb