LINEINITIALIZEEXPARAMS

The LINEINITIZALIZEEXPARAMS structure describes parameters supplied when making calls using LINEINITIALIZEEX.

typedef struct lineinitializeexparams_tag {
  DWORD  dwTotalSize;
  DWORD  dwNeededSize;
  DWORD  dwUsedSize;
  DWORD  dwOptions;

 union
 {
  HANDLE  hEvent;
  HANDLE  hCompletionPort;
 } Handles;

  DWORD  dwCompletionKey;

} LINEINITIALIZEEXPARAMS, FAR *LPLINEINITIALIZEEXPARAMS;

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.

dwOptions

One of the LINEINITIALIZEEXOPTION_ Constants. Specifies the event notification mechanism the application desires to use.

hEvent

If dwOptions specifies LINEINITIALIZEEXOPTION_USEEVENT, TAPI returns the event handle in this field.

hCompletionPort

If dwOptions specifies LINEINITIALIZEEXOPTION_USECOMPLETIONPORT, the application must specify in this field the handle of an existing completion port opened using CreateIoCompletionPort.

dwCompletionKey

If dwOptions specifies LINEINITIALIZEEXOPTION_USECOMPLETIONPORT, the application must specify in this field a value that is returned through the lpCompletionKey parameter of GetQueuedCompletionStatus to identify the completion message as a telephony message.

Remarks

See lineInitializeEx for further information on these options.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later.
  Version: Requires TAPI 2.0 or later.
  Header: Declared in Tapi.h.

See Also

lineInitializeEx