IOCTL_SERIAL_GET_COMMSTATUS (Windows Embedded CE 6.0)

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

See Also

Reference

Serial Port Driver IOCTLs
COM_Open
DeviceIoControl
SERIAL_DEV_STATUS