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  #1  
Old 01-23-2007, 01:33 AM
delsq delsq is offline
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Default delphi

Hi,

After destroy can we use object before null in delphi?
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  #2  
Old 01-23-2007, 02:12 AM
Norrit Norrit is offline
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Default RE: delphi

After driving can we use car before washing in garage?

In other words: What do you mean ???

Objective reality is a delirium caused by lack of alcohol in blood.
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  #3  
Old 01-23-2007, 02:28 AM
daltamira daltamira is offline
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Default RE: delphi

No, you cannot. After destroying the object, the reference to this one is lost, this way, you cannot use it again.
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  #4  
Old 01-26-2007, 11:07 AM
digitiger digitiger is offline
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Default RE: delphi

First thing is that normally you should not destroy the objects in delphi until and unless you are sure as what you want to do and why. Delphi provides another method "FREE" for this, which will first check if object is not already freed and then only try to destroy that.

Even better one is FreeAndNil() which first checks if object is valid and then free it if required and then also sets its pointer to NIL.

Comming back to your question as using object after destroying it and before it is null. The moment any object is destroyed its pointer become invalid and thus cannot be used at all.

Hope it helps and if it does then do accept the answere

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Sunil
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