Scroll event notification

[Tremorblue]

I want to know when the scroll bar on a form is moved so I can perform and update.

I am using code similar to this to capture the event
In the header file.

void virtual __fastcall WMVScroll( TMessage &Message );

BEGIN_MESSAGE_MAP
MESSAGE_HANDLER(WM_VSCROLL,TMessage,WMVScroll)
END_MESSAGE_MAP(TForm);

I call the function in the main CPP file.

void __fastcall TFormLabel::WMVScroll( TMessage &Message )
{}

The problem is that this captures the event and the scroll bar does not move.

I want to know the event has occured but not effect it.
Any help much appreciated.

/Tremor.