Thank you, Ondrej, it works and it is pretty easy. Summary: Let's say you have class TMyPageControl which consists of TMyTabSheet classes (TWinControls). uses ... PropEdits, ...; TMyTabSheet = class(TWinControl) ... protected procedure HookSelection(const ASelection: TPersistentSelectionList); ... end; constructor TMyTabSheet.Create(TheOwner: TComponent); begin ... GlobalDesignHook.AddHandlerSetSelection(@HookSelection); end; procedure TMyTabSheet.HookSelection(const ASelection: TPersistentSelectionList); begin if assigned(FMyPageControl) and (ASelection.IndexOf(self)>=0) then FMyPageControl.TabIndex:= FMyPageControl.Pages.IndexOf(self); end; ______________________________________________________________
Od: Ondrej Pokorny <laza...@kluug.net> Komu: Lazarus mailing list <lazarus@lists.lazarus.freepascal.org> Datum: 22.05.2016 12:56 Předmět: Re: [Lazarus] Detect that component selected in OI.
Instead, do what Howard suggested (although not directly): In your component's design-time package, register a SetSelection hook ("GlobalDesignHook.AddHandlerSetSelection(@OnComponentSelection);"). Then in OnComponentSelection you check if your own component is in the new selection and do whatever you want.
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