Aborting a Create()

[Neal]

How can I abort the creation of a form, from inside of the FormCreate
method?

I want to build a class that is smart enough to know if it should create
itself.

Neal

[Steve Zimmelman]

I believe the OnCreate event actually takes place just after the Form is
created, so that is probably not the place to abort. You might think about
creating a class that controls the creation of other classes based on
whatever criteria you see fit. That would make more sense than to try to
abort a creation in the creation event.

-Steve-

Neal <ne...@msengineering.net> wrote in message
news:7v7qf1$mj...@forums.borland.com...

[Wayne Niddery (TeamB)]

Neal wrote in message <7v7qf1$mj...@forums.borland.com>...

>How can I abort the creation of a form, from inside of the FormCreate
>method?
>
>I want to build a class that is smart enough to know if it should create
>itself.

Don't call Create unless you want it created. Once the process is started,
it is difficult to stop it because a lot of processes are involved (both in
your code and within Windows).

Create a method in this form that you can call instead, that method can
*first* check the criteria and only Show the form if required.

--
Wayne Niddery - WinWright Consulting
RADBooks - http://members.home.net/wniddery/
You have a Right to Free Speech, but not the right to make me listen, nor to
use my property as your soapbox.

[Xavier Pacheco (TeamB)]

Neal,
As Steve mentioned, the OnCreate occurs after the form is created.
Do this, override the create constructor, then abort before calling
inherited Create(). This will prevent the form from being created.
--- x
==============================
Xavier Pacheco (TeamB)
xav...@xapware.com

Sorry but TeamB cannot answer support
questions received via email.

[Tim Jarvis]

Raising an exception in the constructor will abort the construction. That
way you can handle the exception in the function that is creating the form
if required.

Rgds Tim.

[Xavier Pacheco (TeamB)]

Actually, you can even raise a silent exception such as EAbort.

[Neal]

I tried creating an overridden TForm.Create() method, but Delphi didn't like
the signature. I was unable to figure out the signature of the Create() is.

SO...what would the signature (prototype) of the TForm.Create() method look
like?

THanks,

Neal

Xavier Pacheco (TeamB) wrote in message
<381893e6...@forums.inprise.com>...

>Neal,
> As Steve mentioned, the OnCreate occurs after the form is created.
>Do this, override the create constructor, then abort before calling
>inherited Create(). This will prevent the form from being created.

[Tim Jarvis]

In the public section

Constructor Create(Owner : TComponent);Override;

Rgds Tim.

Neal <ne...@msengineering.net> wrote in message

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