George,

I don't see this in any version of VFP starting with VFP6SP5. Either some steps to duplicate the problem are missing or there's a difference in VFP environment.

>Hi, all -
>
>We have a very interesting little problem, which we can replicate. I was wondering if anyone else can verify that this is happening...
>
>There is a (baseclass) combobox, named "Combo1" on a (baseclass) form. It is the only control on the form.
>
>Combo1.When:
>

>RETURN .F.
>

>
>Combo1.Init:
>

>LOCAL ln1, lc1, i
>
>CREATE CURSOR cTemp1 (x C(10))
>FOR i = 1 TO 20
>	APPEND BLANK
>	REPLACE x WITH 'Value ' + ALLTRIM(STR(RECNO()))
>NEXT i
>ln1 = 3
>
>SCAN
>	this.AddItem(x)
>	IF RECNO() = ln1
>		lc1 = x
>	ENDIF
>ENDSCAN
>GO TOP
>this.Value = lc1
>this.Refresh()
>

>
>Next, we run the form.
>
>I would expect that the value of Combo1 cannot change, since the When( ) method returns false. This is not the case. The user can click on the center of Combo1, then drag out of Combo1 (either up or down). This changes the value, a little. Usually only a few values up or down.
>
>This is very scary behavior, as we have hundreds of forms with comboboxes on them, and the default behavior of the framework we are using is to have:
>

>RETURN thisform.editing
>

>in the When clause of all objects, and to only allow editing at certain times.
>
>Can anyone else replicate this (assumed) bug?
>
>BTW, this behavior can be replicated in the following versions of VFP:
>

>Visual FoxPro 06.00.8862.00 for Windows [May 11 2000 08:51:23] Product ID 82898-815-2171467-96032
>
>Visual FoxPro 07.00.0000.9465 for Windows [Jan  4 2002 02:58:33] Product ID 55181-015-6159696-03285
>
>Visual FoxPro 08.00.0000.2021 for Windows [Aug 21 2002 12:54:57] Product ID 55181-270-5446961-03615
>

>Thanks for looking.
>
>- George