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lineSendUSSD

Windows Mobile 6.5
A version of this page is also available for
4/8/2010

Use the lineSendUSSD function to send an Unstructured Supplementary Service Data (USSD) message.


LONG WINAPI lineSendUSSD(
  HLINE hLine,
  const BYTE * const lpbUSSD,
  DWORD dwUSSDSize,
  DWORD dwFlags
);

hLine

The line device handle. The line device handle must have been previously obtained by a call to lineOpen with the proper TAPI device ID specified and a device-specific extension version successfully negotiated with lineNegotiateExtVersion.

lpbUSSD

Points to a USSD command to send.

dwUSSDSize

The size in bytes of the USSD command.

dwFlags

Indicates special flags pertaining to the USSD command. Possible values are listed in the following table.

Value Description

LINEUSSDFLAG_ENDSESSION

Mobile is ending the USSD session.

Returns a positive request identifier if the function is completed asynchronously, or a negative error number if an error occurs. The dwParam2 parameter of the corresponding LINE_REPLY message is zero if the function succeeds or it is a negative error number if an error occurs. The following are possible return values:

  • LINEERR_INVALLINEHANDLE
  • LINEERR_NOMEM
  • LINEERR_OPERATIONUNAVAIL
  • LINEERR_OPERATIONFAILED
  • LINEERR_RESOURCEUNAVAIL
  • LINEERR_INVALPOINTER
  • LINEERR_INVALPARAM
  • LINEERR_UNINITIALIZED

This is a privileged function.

The lineSendUSSD function sends only UNICODE formatted messages and does not support binary messages. Not implemented for CDMA.

Headerextapi.h
Librarycellcore.lib
Windows Embedded CEWindows CE 3.0 and later
Windows MobilePocket PC 2002 and later, Smartphone 2002 and later

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