new Component with TCollection cannot edit in OI

[webcss]

Hi,

I've created a new nonvisual TComponent descent with a TCollection descent. Collection is a published property of my component.
When I drop the component on a form and try to edit the collection, Error "Collection=nil" shows.
Collection is created in component's constructor.

What am I doing wrong?

[Blaazen]

Because I saw the same error and I found this post without reply I give here explanation.

This error simply happens when TCollection is not created.
Example:

If declaration is like this:

Code: [Select]

TItem = class (...)
  ...

TItems = class (TCollection)
  ...

TMyComponent = class (TComponent)
  FItems: TItems;
  ...
  constructor Create;
  ...

then constructor must be like this:

Code: [Select]

constructor TMyComponent.Create;
begin
  inherited Create;
  FItems:=TCollection.Create(TItem);  //error occurs without this line
end;