PHONECAPS structure (tapi.h)
The PHONECAPS structure describes the capabilities of a phone device. The phoneGetDevCaps and TSPI_phoneGetDevCaps functions return this structure.
Syntax
typedef struct phonecaps_tag {
DWORD dwTotalSize;
DWORD dwNeededSize;
DWORD dwUsedSize;
DWORD dwProviderInfoSize;
DWORD dwProviderInfoOffset;
DWORD dwPhoneInfoSize;
DWORD dwPhoneInfoOffset;
DWORD dwPermanentPhoneID;
DWORD dwPhoneNameSize;
DWORD dwPhoneNameOffset;
DWORD dwStringFormat;
DWORD dwPhoneStates;
DWORD dwHookSwitchDevs;
DWORD dwHandsetHookSwitchModes;
DWORD dwSpeakerHookSwitchModes;
DWORD dwHeadsetHookSwitchModes;
DWORD dwVolumeFlags;
DWORD dwGainFlags;
DWORD dwDisplayNumRows;
DWORD dwDisplayNumColumns;
DWORD dwNumRingModes;
DWORD dwNumButtonLamps;
DWORD dwButtonModesSize;
DWORD dwButtonModesOffset;
DWORD dwButtonFunctionsSize;
DWORD dwButtonFunctionsOffset;
DWORD dwLampModesSize;
DWORD dwLampModesOffset;
DWORD dwNumSetData;
DWORD dwSetDataSize;
DWORD dwSetDataOffset;
DWORD dwNumGetData;
DWORD dwGetDataSize;
DWORD dwGetDataOffset;
DWORD dwDevSpecificSize;
DWORD dwDevSpecificOffset;
DWORD dwDeviceClassesSize;
DWORD dwDeviceClassesOffset;
DWORD dwPhoneFeatures;
DWORD dwSettableHandsetHookSwitchModes;
DWORD dwSettableSpeakerHookSwitchModes;
DWORD dwSettableHeadsetHookSwitchModes;
DWORD dwMonitoredHandsetHookSwitchModes;
DWORD dwMonitoredSpeakerHookSwitchModes;
DWORD dwMonitoredHeadsetHookSwitchModes;
GUID PermanentPhoneGuid;
} PHONECAPS, *LPPHONECAPS;
Members
dwTotalSize
Total size allocated to this data structure, in bytes.
dwNeededSize
Size for this data structure that is needed to hold all the returned information, in bytes.
dwUsedSize
Size of the portion of this data structure that contains useful information, in bytes.
dwProviderInfoSize
Size of the provider-specific information, in bytes. If the provider-specific information is a pointer to a string, the size must include the null terminator.
dwProviderInfoOffset
Offset from the beginning of the structure to the variably sized field containing service provider-specific information.
This member provides information about the provider hardware and/or software, such as the vendor name and version numbers of hardware and software. This information can be useful when a user needs to call customer service with problems regarding the provider. The size of the field is specified by dwProviderInfoSize.
dwPhoneInfoSize
Size of the phone-specific information, in bytes. If the phone-specific information is a pointer to a string, the size must include the null terminator.
dwPhoneInfoOffset
Offset from the beginning of the structure to the variably sized device field containing phone-specific information.
This member provides information about the attached phone device, such as the phone device manufacturer, the model name, the software version, and so on. This information can be useful when a user needs to call customer service with problems regarding the phone. The size of the field is specified by dwPhoneInfoSize.
dwPermanentPhoneID
Permanent identifier by which the phone device is known in the system's configuration.
dwPhoneNameSize
Size of the configurable name for the phone, including the null terminator, in bytes.
dwPhoneNameOffset
Offset from the beginning of the structure to the variably sized device field containing a user configurable name for this phone device. This name can be configured by the user when configuring the phone device's service provider and is provided for the user's convenience. The size of the field is specified by dwPhoneNameSize.
dwStringFormat
String format to be used with this phone device. This member uses one of the STRINGFORMAT_ Constants.
dwPhoneStates
State changes for this phone device for which the application can be notified in a PHONE_STATE message. This member one or more of the PHONESTATE_ Constants.
dwHookSwitchDevs
Phone's hookswitch devices. This member uses one of the PHONEHOOKSWITCHDEV_ Constants.
dwHandsetHookSwitchModes
Hookswitch mode of the handset. The member is only meaningful if the hookswitch device is listed in dwHookSwitchDevs. It uses one of the PHONEHOOKSWITCHMODE_ Constants.
dwSpeakerHookSwitchModes
Hookswitch mode of the speaker. The member is only meaningful if the hookswitch device is listed in dwHookSwitchDevs. It uses one of the PHONEHOOKSWITCHMODE_ Constants.
dwHeadsetHookSwitchModes
Hookswitch mode of the headset. The member is only meaningful if the hookswitch device is listed in dwHookSwitchDevs. It uses one of the PHONEHOOKSWITCHMODE_ Constants.
dwVolumeFlags
Volume-setting capabilities of the phone device's speaker components. If the bit in position PHONEHOOKSWITCHDEV_ is TRUE, the volume of the corresponding hookswitch device's speaker component can be adjusted with phoneSetVolume.
dwGainFlags
Gain-setting capabilities of the phone device's microphone components. If the bit position PHONEHOOKSWITCHDEV_ is TRUE, the volume of the corresponding hookswitch device's microphone component can be adjusted with phoneSetGain.
dwDisplayNumRows
Display capabilities of the phone device by describing the number of rows in the phone display. The dwDisplayNumRows and dwDisplayNumColumns members are both zero for a phone device without a display.
dwDisplayNumColumns
Display capabilities of the phone device by describing the number of columns in the phone display. The dwDisplayNumRows and dwDisplayNumColumns members are both zero for a phone device without a display.
dwNumRingModes
Ring capabilities of the phone device. The phone is able to ring with dwNumRingModes different ring patterns, identified as 1, 2, through dwNumRingModes minus one. If the value of this member is 0, applications have no control over the ring mode of the phone. If the value of this member is greater than 0, it indicates the number of ring modes in addition to silence that are supported by the service provider. A value of 0 in the lpdwRingMode parameter of phoneGetRing or the dwRingMode parameter of phoneSetRing indicates silence (the phone is not ringing or should not be rung), and dwRingMode values of 1 to dwNumRingModes are valid ring modes for the phone device.
dwNumButtonLamps
Number of button/lamps on the phone device that are detectable in TAPI. Button/lamps are identified by their identifier. Valid button/lamp identifiers range from zero to dwNumButtonLamps minus one. The keypad buttons '0', through '9', '*', and '#' are assigned the identifiers 0 through 12.
dwButtonModesSize
Size of the button modes array, in bytes.
dwButtonModesOffset
Offset from the beginning of this structure to the variably sized field containing the button modes of the phone's buttons. The array is indexed by button/lamp identifier. This array uses the PHONEBUTTONMODE_ Constants. The size of the array is specified by dwButtonModesSize.
dwButtonFunctionsSize
Size of the button functions field, in bytes.
dwButtonFunctionsOffset
Offset from the beginning of this structure to the variably sized field containing the button functions of the phone's buttons. The array is indexed by button/lamp identifier. This array uses the PHONEBUTTONFUNCTION_ Constants. The size of the array is specified by dwButtonFunctionsSize.
dwLampModesSize
Size of the lamp modes array, in bytes.
dwLampModesOffset
Offset from the beginning of this structure to the variably sized field containing the lamp modes of the phone's lamps. The array is indexed by button/lamp identifier. This array uses the PHONELAMPMODE_ Constants. The size of the array is specified by dwLampModesSize.
dwNumSetData
Number of different download areas in the phone device. The different areas are referred to using the data IDs 0, 1, , dwNumSetData minus one. If this member is zero, the phone does not support the download capability.
dwSetDataSize
Size of the data size array, in bytes.
dwSetDataOffset
Offset from the beginning of this structure to the variably sized field containing the sizes (in bytes) of the phone's download data areas. This is an array with DWORD-sized elements indexed by data identifier. The size of the array is specified by dwSetDataSize.
dwNumGetData
Number of different upload areas in the phone device. The different areas are referred to using the data IDs 0, 1, , dwNumGetData minus one. If this field is zero, the phone does not support the upload capability.
dwGetDataSize
Size of the data size array, in bytes.
dwGetDataOffset
Offset from the beginning of this structure to the variably sized field containing the sizes (in bytes) of the phone's upload data areas. This is an array with DWORD-sized elements indexed by data identifier. The size of the array is specified by dwGetDataSize.
dwDevSpecificSize
Size of the device-specific field, in bytes. If the device specific information is a pointer to a string, the size must include the null terminator.
dwDevSpecificOffset
Offset from the beginning of this structure to the variably sized device-specific field. The size of the field is specified by dwDevSpecificSize.
dwDeviceClassesSize
Size of the supported device class identifiers, in bytes.
dwDeviceClassesOffset
Offset from the beginning of this structure to a string consisting of the device class identifiers supported on this device for use with phoneGetID. The identifiers are separated by NULLs, and the last identifier in the list is followed by two NULLs. The size of the field is specified by dwDeviceClassesSize.
dwPhoneFeatures
Flags that indicate which Telephony API functions can be invoked on the phone. A zero indicates the corresponding feature is not implemented and can never be invoked by the application on the phone; a one indicates the feature may be invoked depending on the device state and other factors. This member uses PHONEFEATURE_ Constants.
dwSettableHandsetHookSwitchModes
PHONEHOOKSWITCHMODE_ values that can be set on the handset using phoneSetHookSwitch.
dwSettableSpeakerHookSwitchModes
PHONEHOOKSWITCHMODE_ values that can be set on the speakerphone using phoneSetHookSwitch.
dwSettableHeadsetHookSwitchModes
PHONEHOOKSWITCHMODE_ values that can be set on the headset using phoneSetHookSwitch.
dwMonitoredHandsetHookSwitchModes
PHONEHOOKSWITCHMODE_ values that can be detected and reported for the handset in a PHONE_STATE message and by phoneGetHookSwitch.
dwMonitoredSpeakerHookSwitchModes
PHONEHOOKSWITCHMODE_ values that can be detected and reported for the speakerphone in a PHONE_STATE message and by phoneSetHookSwitch.
dwMonitoredHeadsetHookSwitchModes
PHONEHOOKSWITCHMODE_ values that can be detected and reported for the headset in a PHONE_STATE message and by phoneSetHookSwitch.
PermanentPhoneGuid
The GUID permanently associated with this phone.
Remarks
Device-specific extensions should use the DevSpecific (dwDevSpecificSize and dwDevSpecificOffset) variably sized area of this data structure.
The members dwDeviceClassesSize through dwMonitoredHeadsetHookSwitchModes are available only to applications that open the phone device with an API version of 2.0 or later.
Requirements
| Requirement | Value |
|---|---|
| Header | tapi.h |