>I'm using a combobox
>
>

>
>*Init
>this.visible=.f.
>this.style = 2
>SELECT myTable
>SCAN 
>this.AddItem(TRIM(myField))
>ENDSCAN 
>this.DisplayCount = this.ListCount
>
>
>*GotFocus
>Keyboard '{ALT+DNARROW}' Plain Clear
>

>
>The control is made visible and receives focus by the click event of another control.
>
>If the mouse does not enter the area of the dropdown, the up/down arrows work; sometimes the mouse wheel works.
>
>If the mouse enters the dropdown area, the mouse will highlight a list item; up/down arrows may change displayvalue, but will not move the highlighted item.
>
>I have searched, but am unable to find this behavior previously discussed.
>
>TIA
>
>dg

See if this thread Thread ID: 1281871 can be of help.