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Deleting linked components

I have component1 that has another component2 as a published property.

In the IDE:

I set this property of component1 so that it links (points to) component2.

So far so good.

Now, when I delete component2 the property in component1 still points to component2 and causes serious problems with the IDE reporting memory access violations.

Do I need to clear the property in component1 that points to (the now deleted) component2.

And if so how do I do that, do I need component2 to have knowledge of component1?

rarigo

Hi zebada,

A piece of code would be nice. Don't you think so?

Tchau,
Reginaldo

zebada

ASKER

Here's sample code that demonstrates the problem:

1. Place both components on a form, from the "My stuff" palette page.
2. Set the property "other" of Image1 to Other1.
3. Delete Other1 from the form.
4. BANG!

unit Image1;

interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ExtCtrls;

type
TOther = class(TImage)
end;

TImage1 = class(TImage)
private
Fother: TOther;
procedure Setother(const Value: TOther);
{ Private declarations }
protected
{ Protected declarations }
public
{ Public declarations }
published
{ Published declarations }
property other: TOther read Fother write Setother;
end;

procedure Register;

implementation

procedure Register;
begin
RegisterComponents('My Stuff', [TImage1,TOther]);
end;

{ TImage1 }

procedure TImage1.Setother(const Value: TOther);
begin
Fother := Value;
end;

end.

ASKER CERTIFIED SOLUTION

Greyman

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zebada

ASKER

Perfect :)