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Re: [TSVN] Another refactoring opportunity?

From: SteveKing <steveking_at_gmx.ch>
Date: 2005-01-04 19:29:42 CET

Will Dean wrote:

> Ignore the template for a moment, as it's not really relevant - the new
> class is just another Dialog-ish class sitting in the derivation chain
> (is that a proper C++ term?) This could either be something like CWnd
> -> CDialog -> CStandAloneDialog -> CAddDlg (or whatever) or CWnd ->
> CDialog -> CResizableDialog -> CStandAlongDialog -> CAddDlg
> There's no problem any and/or all of these CWnd-derived classes having
> their own message maps (for example CResizableDialog has its own message
> map, which doesn't clash with the message maps in the TSVN dialogs.
> All that the templating does is allow me to have one set of code which
> implements:
> CStandAloneDialogDerivedDirectlyFromCDialog
> and
> CStandAloneDialogDerivedFromCResizableDialog
> without having to have to write the code twice. (The compiler probably
> generates it twice)

Ah ok, I see. Then I'm definitely +1 to implement the dialogs that way.
Saves us a lot of trouble and cleans up the dialog sources a little bit.

> I'll have a go at extending it's scope a bit more. What's particularly
> annoying about this 'boring code' is that the 'IsIconic' case (the
> majority of the code) seems to never be actually used on an
> Explorer-shell style machine (unless you kill the shell and *then*
> minimise the app.) WinNT 3.51 support, anybody? (Win9x might be
> different, too.)

I wondered about that too. But I did that exactly as it was mentioned in
the MSDN docs. When I once tried to step throught the code, the
breakpoint was never hit no matter what I tried. But I thought that
there must be a use for it - I just haven't found it yet. Otherwise the
MSDN wouldn't tell us to do it that way?
(or the MSDN is just outdated ;)


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Received on Tue Jan 4 19:30:22 2005

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