How to disable keypress in combox?

[musa.biralo]

Hi there,
I am trying to let user just to click the dropdown of the combox and
select an item. I am trying to disable any key (not allowing to type)
except the Enter, Arrows and Escape keys. Please help me or point me
where I can find those information.

It will be very great if we could just allow the sequence of the keys
that matches the text of cobox. For example, if the combo box has
musabiralo then allowing "m" then "u" and so for but not allowing "a"
"b" or "u" "m"....

Any help will be big help.
Thanks

MusaBiralo

 

[musa.biralo]

Forgot to add, using the listbox is my last option or changing the
Style to 1 of combobox.
Thanks.