that would be the open Event, left Part gets Triggered by the Click like you said and the right part gets triggered by the open Event, here is the code from Flex
/** * Opens the UIComponent object specified by the <code>popUp</code> property. */ public function open():void { openWithEvent(null); } /** * @private */ private function openWithEvent(trigger:Event = null):void { if (!showingPopUp && enabled) { displayPopUp(true); var cbde:DropdownEvent = new DropdownEvent(DropdownEvent.OPEN); cbde.triggerEvent = trigger; dispatchEvent(cbde); } } ----- Original Message ---- From: Glenn Williams <[EMAIL PROTECTED]> To: flexcoders@yahoogroups.com Sent: Saturday, January 26, 2008 12:26:04 PM Subject: [flexcoders] Re: PopUpButton Events Sorry when I said right hand button I meant the component button on the right hand side of the PopUpButton Component (not mouse button), the one with the arrow that triggers the second UIcomponent to be created. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ