Dropdown Combo Scroll Bar ?????

Greetings

I'm trying to capture the scroll bar up/down button press when a TComboBox
is DROPPED DOWN and am failing.  I've even tried to get the windows API
messages and used WM_Scroll, again with no success.

The existing events won't do as I want to execute my procedure when the
ComboBox ScrollBar Down button is pressed.

Could someone please explain how to get round this, thanks in advance

Amir Gul
(Astrac Ltd)