Hi,

I have used TNotebook in a (commercial) project of mine. All worked well, till recently.

Now, I get an error "OnPageChange" property not found when loading the control in the DFM.

Since this is the only useful event for this control, why on earth was it removed ?

The only thing the user can do with this control, is switch tabs. If you remove the event which is triggered when the tabs are switched, how am I supposed to react on the user activating another tab ?

Michael.

I don't remember that OnPageChange was ever removed. TNotebook on the other hand was removed because it was implemented in a completely wrong way and it was substituted with a correct implementation.

From your comments it seams to me that you were using TNotebook like a

TPageControl, in this case you need to remove your TNotebook and use TPageControl instead:
http://wiki.lazarus.freepascal.org/Lazarus_0.9.30_release_notes#TNotebook_and_TPage

The correct TNotebook doesn't need a OnPageChange property because the user cannot change pages, this can only be done in code.

Are you sure about that error message?

TNotebook = class(TCustomNotebook)
..

   published

..

     property OnPageChanged;

Mark Morgan Lloyd wrote

Are you sure about that error message? ?TNotebook = class(TCustomNotebook)

Obviously you are not using Lazarus SVN.

Very. And I'm using trunk lazarus.

Michael.

Whether I am using it or not is not relevant, I was referring to 0.9.30 sources to check the property name. Which is OnPageChanged, not OnPageChange.