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PHONESTATUS
The PHONESTATUS structure describes the current status of a phone device.
typedef struct phonestatus_tag {
DWORD dwTotalSize;
DWORD dwNeededSize;
DWORD dwUsedSize;
DWORD dwStatusFlags;
DWORD dwNumOwners;
DWORD dwNumMonitors;
DWORD dwRingMode;
DWORD dwRingVolume;
DWORD dwHandsetHookSwitchMode;
DWORD dwHandsetVolume;
DWORD dwHandsetGain;
DWORD dwSpeakerHookSwitchMode;
DWORD dwSpeakerVolume;
DWORD dwSpeakerGain;
DWORD dwHeadsetHookSwitchMode;
DWORD dwHeadsetVolume;
DWORD dwHeadsetGain;
DWORD dwDisplaySize;
DWORD dwDisplayOffset;
DWORD dwLampModesSize;
DWORD dwLampModesOffset;
DWORD dwOwnerNameSize;
DWORD dwOwnerNameOffset;
DWORD dwDevSpecificSize;
DWORD dwDevSpecificOffset;
DWORD dwPhoneFeatures;
} PHONESTATUS, FAR *LPPHONESTATUS;
Members
dwTotalSize
The total size in bytes allocated to this data structure.
dwNeededSize
The size in bytes for this data structure that is needed to hold all the
returned information.
dwUsedSize
The size in bytes of the portion of this data structure that contains useful
information.
dwStatusFlags
This field provides a set of status flags for this phone device. This
parameter uses the following PHONESTATUSFLAGS_ constants:
PHONESTATUSFLAGS_CONNECTED
Specifies whether the phone is currently connected to TAPI. TRUE if connected;
FALSE otherwise.
PHONESTATUSFLAGS_SUSPENDED
Specifies whether TAPI's manipulation of the phone device is suspended. TRUE
if suspended; FALSE otherwise. An application's use of a phone device may be
temporarily suspended when the switch wants to manipulate the phone in a way that
cannot tolerate interference from the application.
dwNumOwners
The number of application modules with owner privilege for the phone.
dwNumMonitors
The number of application modules with monitor privilege for the phone.
dwRingMode
The current ring mode of a phone device.
dwRingVolume
The current ring volume of a phone device. This is a value between 0x00000000
(silence) and 0x0000FFFF (maximum volume).
dwHandsetHookSwitchMode
The current hookswitch mode of the phone's handset. This parameter uses the
following PHONEHOOKSWITCHMODE_ constants:
PHONEHOOKSWITCHMODE_ONHOOK
The device's microphone and speaker are both onhook.
PHONEHOOKSWITCHMODE_MIC
The device's microphone is active, the speaker is mute.
PHONEHOOKSWITCHMODE_SPEAKER
The device's speaker is active, the microphone is mute.
PHONEHOOKSWITCHMODE_MICSPEAKER
The device's microphone and speaker are both active.
dwHandsetVolume
The current speaker volume of the phone's handset device. This is a value
between 0x00000000 (silence) and 0x0000FFFF (maximum volume).
dwHandsetGain
The current microphone gain of the phone's handset device. This is a value
between 0x00000000 (silence) and 0x0000FFFF (maximum gain).
dwSpeakerHookSwitchMode
The current hookswitch mode of the phone's speakerphone. This parameter uses
the following PHONEHOOKSWITCHMODE_ constants:
PHONEHOOKSWITCHMODE_ONHOOK
The device's microphone and speaker are both onhook.
PHONEHOOKSWITCHMODE_MIC
The device's microphone is active, the speaker is mute.
PHONEHOOKSWITCHMODE_SPEAKER
The device's speaker is active, the microphone is mute.
PHONEHOOKSWITCHMODE_MICSPEAKER
The device's microphone and speaker are both active.
dwSpeakerVolume
The current speaker volume of the phone's speaker device. This is a value
between 0x00000000 (silence) and 0x0000FFFF (maximum volume).
dwSpeakerGain
The current microphone gain of the phone's speaker device. This is a value
between 0x00000000 (silence) and 0x0000FFFF (maximum gain).
dwHeadsetHookSwitchMode
The current hookswitch mode of the phone's headset. This parameter uses the
following PHONEHOOKSWITCHMODE_ constants:
PHONEHOOKSWITCHMODE_ONHOOK
The device's microphone and speaker are both onhook.
PHONEHOOKSWITCHMODE_MIC
The device's microphone is active, the speaker is mute.
PHONEHOOKSWITCHMODE_SPEAKER
The device's speaker is active, the microphone is mute.
PHONEHOOKSWITCHMODE_MICSPEAKER
The device's microphone and speaker are both active.
dwHeadsetVolume
The current speaker volume of the phone's headset device. This is a value
between 0x00000000 (silence) and 0x0000FFFF (maximum volume).
dwHeadsetGain
The current microphone gain of the phone's headset device. This is a value
between 0x00000000 (silence) and 0x0000FFFF (maximum gain).
dwDisplaySize
dwDisplayOffset
The size in bytes of the variably sized field containing the phone's current
display information, and the offset in bytes, from the beginning of this data
structure.
dwLampModesSize
dwLampModesOffset
The size in bytes of the variably sized field containing the phone's current
lamp modes, and the offset in bytes from the beginning of this data structure.
dwOwnerNameSize
dwOwnerNameOffset
The size in bytes of the variably sized field containing the name of the
application that is the current owner of the phone device, and the offset in bytes
from the beginning of this data structure. The name is the application name
provided by the application when it invoked with phoneInitialize or phoneInitializeEx . If no application name was supplied, the application's file name is used
instead. If the phone currently has no owner, dwOwnerNameSize is zero.
dwDevSpecificSize
dwDevSpecificOffset
The size in bytes of the variably sized device-specific field, and the offset
in bytes from the beginning of this data structure
dwPhoneFeatures
These flags indicate which Telephony API functions can be invoked on the
phone, considering the availability of the feature in the device capabilities, the
current device state, and device ownership of the invoking application. A zero
indicates the corresponding feature cannot be invoked by the application on the
phone in its current state; a one indicates the feature can be invoked. This
field uses PHONEFEATURE_ constants.
Remarks
Device-specific extensions should use the DevSpecific (dwDevSpecificSize and dwDevSpecificOffset) variably sized area of this data structure.
The dwPhoneFeatures member is available only to applications that open the phone device with an
API version of 0x00020000 or greater.
See Also
phoneInitialize, phoneInitializeEx
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