Hi Antonio.
I download lastest version of FWPPC.
COMBOBOX is work now.
I try use STYLE CBS_DROPDOWN, and some character from previous Combo value is appended to end of current value ,if COMBOBOX lost focus (click to next get box for example).
Length of previous value must be more than length of current value.
If STYLE CBS_DROPDOWN not set COMBOBOX work good.
Regards
Andrej.