| PHONEBUTTONSTATE_UP | 0x00000001 | 
| PHONEBUTTONSTATE_DOWN | 0x00000002 | 
| Values | The PHONEBUTTONSTATE constants have the following values: | 
| PhoneButtonState_up The button is in the "up" state. | |
| PhoneButtonState_down The button is in the "down" state (i.e., pressed down). | |
| Extensibility | The high order 16 bits can be assigned for device specific extensions. The low order 16 bits are reserved. | 
| Comments | None. | 
| See Also | Functions:  phoneGetDevCaps, phoneSetStatusMessages, phoneGetStatusMessages Messages: PHONE_BUTTON Data Types: PHONECAPS |