[lazarus] Is NIL constant?

[DMo2]

----- Original Message ----- 
From: "Marc Weustink" <marc.weustink at cuperus.nl>
To: <lazarus at miraclec.com>
Sent: Thursday, September 25, 2003 1:30 PM
Subject: RE: [lazarus] Is NIL constant?


> + From: DMo2 [mailto:madarzoo at o2.pl]
> + Sent: woensdag 24 september 2003 20:58
> + 
> + I can't compile program like this
> + LINE 218:
> +     property Bitmap: TBitmap read FBitmap write SetBitmap default nil;
> + 
> + (218,67) Error: Property can't have a default value
> 
> If I recall it correctly, you can't use the default clause.

But why not with TBitmap, with other properties  I may use default value
> 
> + (218,70) Error: The default value of a property must be constant
> + 
> + I suppose that declaration of  NIL is different
> 
> It has nothing to do with nil.

Maybe TBitmap is different, I can't see it

> 
>  
> + I can remove this, but I want know why?
> + 
> 
> Marc
> 
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Darek