Thanks for responding Marcia

None that I have put it. There are code in the init() but is CodeBook62 codes. I have put all the porperties using properties sheet.

>This same form if I add the autocomplete combobox class, if just opened and closed without any changes, will ask for the changes to be saved.
>
>Do you have code in the Init() of the combo box that sets the ListIndex or the Value? This will dirty the buffer.