PHONEBUTTONSTATE
These bit-flag constants describe the button's positions.
The following table shows the PHONEBUTTONSTATE constants.
| Value | Description |
|---|---|
| PHONEBUTTONSTATE_DOWN = 0x00000002 | The button is in the "down" state. That is, pressed down. |
| PHONEBUTTONSTATE_UNAVAIL = 0x00000008 | Indicates that the up or down state of the button is not known to the service provider, and will not become known at a future time. TAPI versions 1.4 and later. |
| PHONEBUTTONSTATE_UNKNOWN = 0x00000004 | Indicates that the up or down state of the button is not known at this time, but may become known at a future time. TAPI versions 1.4 and later. |
| PHONEBUTTONSTATE_UP = 0x00000001 | The button is in the "up" state. |
Remarks
These constants cannot be extended. All 32 bits are reserved.
For backward compatibility, it is the responsibility of the service provider to examine the negotiated API version on the phone, and to not use those PHONEBUTTONSTATE constants that the negotiated version does not support.
Requirements
OS Versions: Windows CE 3.0 and later.
Header: Tapi.h.
Last updated on Saturday, April 10, 2004
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