RegisterClass

[Stephen Diebel]

I want to use Streaming to save an object I create. (See sample code
below.)

RegisterClass gives me an error:
Incompatible types: 'tagWNDCLASSA' and 'Class reference'

What do I need to do?

Thanks,

SDiebel

TaClass = Class(TPersistent)
end;

initialization
RegisterClass(TaClass);

[Xavier Pacheco (TeamB)]

I don't get that error at all in a small test app. Sounds like
something else is going on. Perhaps the TaClass is being redefined by
another unit?
-- x

Xavier Pacheco (TeamB)
Xapware Technologies Inc.
www.xapware.com
www.xapxone.com - Tips, search engine and articles

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[Robert Cerny]

Stephen Diebel wrote in message <3AC90924...@natc-ht.com>...

>I want to use Streaming to save an object I create. (See sample code
>below.)
>
>RegisterClass gives me an error:
>Incompatible types: 'tagWNDCLASSA' and 'Class reference'
>

Hm? RegisterClass can't give you this error. It's compiler that gives you
this error.

>
>TaClass = Class(TPersistent)
>end;
>
>initialization
>RegisterClass(TaClass);
>

Seems like you added "windows" into uses clause in implemetation section.
The solution is to either move "windows" into uses clause of interface
section or rename your class.

--
Robert

[Alex Yackimoff]

Try this:

Classes.ReqisterClass(TaClass);

--
Alex Yackimoff

[Roger Morton]

In <3AC90924...@natc-ht.com>, Stephen Diebel wrote:
>
> RegisterClass gives me an error:
> Incompatible types: 'tagWNDCLASSA' and 'Class reference'
>

Stephen

Try

Classes.RegisterClass(TaClass)

You've got Windows after Classes in your Uses clause. There are
duplicated declarations.

Roger Morton
roger....@bigfoot.com

[Ron Davis]

This problem cropped for me when I added "Windows" to the uses clause. I
got rid of the error by using "Classes.RegisterClass" instead of just
"RegisterClass".

Stephen Diebel wrote:

--
Ron Davis
Custom Software Engineering

[Colin Wilson]

'windows.pas' has a function called RegisterClass that conflicts with
the VCL one.

Just make sure that 'windows' is the *first* thing in your uses list.
If you say:

uses Classes, SysUtils, Windows

you will get the problem you're seeing.

But if you say:

uses Windows, Classes, SysUtils

The problem will go away.

Colin
e-mail :co...@wilsonc.demon.co.uk
web: http://www.wilsonc.demon.co.uk/delphi.htm

[Robert Surcouf]

Thank you Colin. You're so right. It worked for me.