Touch Information
| Target | Gesture | Action | 
|---|---|---|
| Input Field | Tap | If the drop down is not open, expand the drop down list. Otherwise, close the drop down list. If hints, title or messages exist in a notewindow, pop up the notewindow. | 
| Arrow Button | Tap | If the drop down is not open, expand the drop down list. Otherwise, close the drop down list. | 
| Option Item | Tap | Tap on an option item in the drop down list to select. | 
Disabled option items receive no highlight and are not selectable.
Keyboard Information
| Target | Key | Action | 
|---|---|---|
| Option item | Enter | Select the highlighted choice from the drop down. | 
| Input field | Enter | Set the input text as the value. | 
| Drop down | UpArrow or DownArrow | Highlight the option item on the drop down list in the direction of the arrow. If the drop down is not open, expand the drop down list. | 
| Drop down | Esc | Collapse the drop down list. If the drop down is already closed, do nothing. | 
| Combobox | Tab In | Set focus to the combobox. If hints, title or messages exist in a notewindow, pop up the notewindow. | 
Disabled option items receive no highlight and are not selectable.