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PHONESTATE_ Constants
The PHONESTATE_ bit-flag constants describe various status items for a phone
device.
PHONESTATE_OTHER
Phone-status items other than those listed below have changed. The application
should check the current phone status to determine which items have changed.
PHONESTATE_CONNECTED
The connection between the phone device and TAPI was just made. This happens
when TAPI is first invoked or when the wire connecting the phone to the PC is
plugged in with TAPI active.
PHONESTATE_DISCONNECTED
The connection between the phone device and TAPI was just broken. This happens
when the wire connecting the phone set to the PC is unplugged while TAPI is
active.
PHONESTATE_OWNER
The number of owners for the phone device.
PHONESTATE_MONITORS
The number of monitors for the phone device.
PHONESTATE_DISPLAY
The display of the phone has changed.
PHONESTATE_LAMP
A lamp of the phone has changed.
PHONESTATE_RINGMODE
The ring mode of the phone has changed.
PHONESTATE_RINGVOLUME
The ring volume of the phone has changed.
PHONESTATE_HANDSETHOOKSWITCH
The handset hookswitch state has changed.
PHONESTATE_HANDSETVOLUME
The handset's speaker volume setting has changed.
PHONESTATE_HANDSETGAIN
The handset's microphone gain setting has changed.
PHONESTATE_SPEAKERHOOKSWITCH
The speakerphone's hookswitch state has changed.
PHONESTATE_SPEAKERVOLUME
The speakerphone's speaker volume setting has changed.
PHONESTATE_SPEAKERGAIN
The speakerphone's microphone gain setting state has changed.
PHONESTATE_HEADSETHOOKSWITCH
The headset's hookswitch state has changed.
PHONESTATE_HEADSETVOLUME
The headset's speaker volume setting has changed.
PHONESTATE_HEADSETGAIN
The headset's microphone gain setting has changed.
PHONESTATE_SUSPEND
The application's use of the phone is temporarily suspended.
PHONESTATE_RESUME
The application's use of the phone device is resumed after having been
suspended for some time.
PHONESTATE_DEVSPECIFIC
The phone's device-specific information has changed.
PHONESTATE_REINIT
Items have changed in the configuration of phone devices. To become aware of
these changes (as for the appearance of new phone devices), the application
should reinitialize its use of TAPI.
PHONESTATE_CAPSCHANGE
Indicates that, due to configuration changes made by the user or other
circumstances, one or more of the fields in the PHONECAPS structure have changed. The application should use phoneGetDevCaps to read the updated structure. If a service provider sends a PHONE_STATE message containing this value to TAPI, TAPI will pass it along to
applications that have negotiated TAPI version 0x00010004 or above; applications
negotiating a previous API version will receive PHONE_STATE messages specifying
PHONESTATE_REINIT, requiring them to shutdown and reinitialize their connection to TAPI
to obtain the updated information.
PHONESTATE_REMOVED
Indicates that the device is being removed from the system by the service
provider (most likely through user action, through a control panel or similar
utility). A PHONE_STATE message with this value will normally be immediately followed by a PHONE_CLOSE message on the device. Subsequent attempts to access the device prior to TAPI
being reinitialized will result in PHONEERR_NODEVICE being returned to the
application. If a service provider sends a PHONE_STATE message containing this
value to TAPI, TAPI will pass it along to applications that have negotiated TAPI
version 0x00010004 or above; applications negotiating a previous API version
will not receive any notification.
No extensibility. All 32 bits are reserved.
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