When do we use drop-down list? and when do we use combo box? For example, I have a page for users to send a message. In that page, I have a text field for "Subject", a textarea for the body of the "Message", and the message can be sent to only one of the designated list of people. The message is sent after the user clicks on the "SEND" button. The designated list of people for users to select, which is a field for "To", should be a drop-down list or a combo box?
Combo boxes allow editing - hence the name a combination of text and drop down inputs. If you want to limit the input to specific choices and not let the user edit or enter additional ones, then use a drop down list.
Tom Blough<br /> <blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Cum catapultae proscriptae erunt tum soli proscripti catapultas habebunt.<hr></blockquote>