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IOCTL_SERIAL_GET_COMMSTATUS (Windows Embedded CE 6.0)

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1/6/2010

This IOCTL clears pending communications errors and returns the current communication status. The DeviceIoControl function executes this IOCTL.

Parameters

  • dwOpenData
    [in] Handle returned from a call to the COM_Open function.
  • dwCode
    [in] Set to this IOCTL: IOCTL_SERIAL_GET_COMMSTATUS.
  • pBufIn
    Ignored.
  • dwLenIn
    Ignored.
  • pBufOut
    [out] Pointer to a SERIAL_DEV_STATUS structure to contain the returned status information.
  • dwLenOut
    [out] Greater than or equal to sizeof(SERIAL_DEV_STATUS).
  • pdwActualOut
    [out] Pointer to a DWORD variable to return the length of the returned data. Set to sizeof(SERIAL_DEV_STATUS) if there is no error.

Return Values

Returns TRUE if successful. Returns FALSE otherwise. To get extended error information, call GetLastError.

Requirements

Header pegdser.h
Windows Embedded CE Windows CE 1.0 and later

See Also

Reference

Serial Port Driver IOCTLs
COM_Open
DeviceIoControl
SERIAL_DEV_STATUS