DoDi Thank you very much, You explain much better then me :)
Main problem constructor not finished construction, I mean how to handle
Self(TExLookUp) construction is finished? I have to wait, when
self(TExLookUp) has created, and load self's properties loaded from,
form resources (from .lfm) , then I can to use TExLookUp's properties,
for child control, or some one else
I need similar a "TExLookUp.creatED" event, so I can now, class created
and ready for use. This is not importend just my this component, other
example,
was write previous message:
TxItem = class(TCollectionItem)
FName : string;
property Name : string read Fname write Fname;
....
constructor Tx.Create(Collection: TCollection);
begin
inherited Create(Collection);
.....
FName := 'XItem' + IntToStr(Index); --> FName is Item's name,
TCollection.Index is always 0(zero). Collection added, so it has a index
number from TCollectionItem, but TCollection not known this. I need
unique FName, and "Index" property. I can get index if TCollection.CreatED;
@DoDi: "TExLookUp.OnCreate handler" how to add this? if add it my self,
where to triggered or its just example
"AFAIK" what mean this word? english is not mine language, I'm using
dictionary while writeing message.
Thank you
I hope I can translate my problem about create method
05-03-2014 08:29 tarihinde, Hans-Peter Diettrich yazdı:
FreeMan schrieb:
constructor TExLookUp.Create(AOwner: TComponent);
begin inherited Create(AOwner);
Self.OnChange := @EditChange;
set more Self properties here!
FGrid := TRxDBGrid.Create(Self);
FGrid.Parent := Self.Parent;
FGrid.Left := Self.Left;
FGrid.Top := Self.Heigh + 10;
FGrid.Width := 150;
FGrid.visible := False;
...
Please remember that you are in the TExLooUp constructor. Finish
initialization of this component, before assigning Self.whatever to
the FGrid.
When the TExtLookUp is initialized from the form resource, you have to
wait until this has been done. In this case I'd move the FGrid related
part into the TExLookUp.OnCreate handler, which AFAIK is called
*after* the TExtLookUp has been created and fully initialized.
Or put the code into ExtLookUp.SetParent, as Mattias suggests. But
this solution depends on the order, how the TExtLookUp properties are
initialized from the form resource. When Parent is set before Left,
Height etc., this solution doesn't work either.
DoDi
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