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From: mkb@rover.ri.cmu.edu (Mike Blackwell)
Newsgroups: comp.sys.mac.programmer
Subject: Another C++/MacApp question: Each()
Message-ID: <10615@pt.cs.cmu.edu>
Date: 30 Sep 90 18:20:33 GMT
Reply-To: mkb@rover.ri.cmu.edu (Mike Blackwell)
Organization: Carnegie-Mellon University, CS/RI
Lines: 37

I have another question about using MacApp with C++, involving the Each
method. I'm aware that this is discussed briefly in the August MacTutor, but
I still can't figure it out. It is also apparently discussed in the MacApp
2.0 final docs, but due to a screwup, I only have the beta docs and I'm
still trying to get that fixed.

I'm going through the 2.0 tutorial, but coding in C++. The problem I have
stems from the following Object Pascal:

PROCEDURE TIconDocument.RedrawViews;
    PROCEDURE InvalidateView (aView: TView)
    BEGIN
        aView.ForceRedraw;
    END;
BEGIN
    ForAllViewsDo(InvalidateView);
END;

I realize I need to use static links to get the parameters passed in C++,
and I've been trying variations on the theme:

pascal void InvalidateView(TView *aView)
{
    aView->ForceRedraw();
}

typedef pascal void (*DoToView)(Tview *aView, void *DoToView_StaticLink);

pascal void TIconDocument::RedrawViews(void)
{
    ForAllViewsDo((DoToView)InvalidateView);
}

... but I can't seem to divine the correct syntax. Any help in this matter
will be greatly appreciated (and I hope I get my docs soon!).

		Mike Blackwell		mkb@rover.ri.cmu.edu