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LINEDEVSTATUS

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This structure describes the current status of a line device.

typedef struct linedevstatus_tag {
  DWORD dwTotalSize;
  DWORD dwNeededSize;
  DWORD dwUsedSize;
  DWORD dwNumOpens;
  DWORD dwOpenMediaModes;
  DWORD dwNumActiveCalls;
  DWORD dwNumOnHoldCalls;
  DWORD dwNumOnHoldPendCalls;
  DWORD dwLineFeatures;
  DWORD dwNumCallCompletions;
  DWORD dwRingMode;
  DWORD dwSignalLevel;
  DWORD dwBatteryLevel;
  DWORD dwRoamMode;
  DWORD dwDevStatusFlags;
  DWORD dwTerminalModesSize;
  DWORD dwTerminalModesOffset;
  DWORD dwDevSpecificSize;
  DWORD dwDevSpecificOffset;
} LINEDEVSTATUS, FAR* LPLINEDEVSTATUS;

Members

  • dwTotalSize
    Total size in bytes allocated to this data structure.
  • dwNeededSize**
    Size, in bytes, for this data structure that is needed to hold all the returned data.
  • dwUsedSize**
    Size, in bytes, of the portion of this data structure that contains useful data.
  • dwNumOpens**
    Number of active opens on the line device.
  • dwOpenMediaModes**
    Value that specifies a bit array that indicates for which media modes the line device is currently open.
  • dwNumActiveCalls**
    Number of calls on the line in call states other than idle, onhold, onholdpendingtransfer, and onholdpendingconference.
  • dwNumOnHoldCalls**
    Number of calls on the line in the onhold state.
  • dwNumOnHoldPendCalls**
    Number of calls on the line in the onholdpendingtransfer or onholdpendingconference state.
  • dwLineFeatures**
    Value that specifies the line-related API functions that are currently available on this line. It uses LINEFEATURE.
  • dwNumCallCompletions**
    Number of outstanding call completion requests on the line.
  • dwRingMode**
    Current ring mode on the line device.
  • dwSignalLevel**
    Current signal level of the connection on the line. This is a value in the range 0x00000000 (weakest signal) to 0x0000FFFF (strongest signal).
  • dwBatteryLevel**
    Current battery level of the line device hardware. This is a value in the range 0x00000000 (battery empty) to 0x0000FFFF (battery full).
  • dwRoamMode**
    Specifies the current roam mode of the line device. It uses LINEROAMMODE.
  • dwDevStatusFlags**
    Size, in bytes, of this data structure that contains useful data, of type It uses LINEDEVSTATUSFLAGS.
  • dwTerminalModesSize
    Size, in bytes, of the variably sized device field that contains an array with DWORD-sized entries.
  • dwTerminalModesOffset**
    Offset, in bytes, from the beginning of this data structure. This array is indexed by terminal identifiers, in the range from zero to dwNumTerminals minus one. Each entry in the array specifies the current terminal modes for the corresponding terminal set using the lineSetTerminal function for this line. It uses LINETERMMODE.
  • dwDevSpecificSize
    Size, in bytes, of the variably sized device-specific field.
  • dwDevSpecificOffset**
    Offset, in bytes, from the beginning of this data structure.

Remarks

Device-specific extensions should use the DevSpecific (dwDevSpecificSize and dwDevSpecificOffset) variably sized area of this data structure.

The members dwAvailableMediaModes through dwAppInfoOffset are available only to applications that open the line device with an API version of 2.0 or later.

Requirements

OS Versions: Windows CE 1.0 and later.
Header: Tapi.h.

 Last updated on Saturday, April 10, 2004

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