Sets the time-out parameters for all read and write operations on a specified communications device.

BOOLEAN SetCommTimeouts(
  COMMHANDLE hComm,                  // handle to comm device
  LPCOMMTIMEOUTS lpCommTimeouts      // time-out values
);

Parameters

hComm

[in] Handle to the communications device. OpenComm returns this handle.

lpCommTimeouts

[in] Pointer to a COMMTIMEOUTS structure that contains the new time-out values.

Return Values

Non-zero

Success.

0 (zero)

Failure. To determine the status, call GetLastRtError.

Status

E_BUSY

An I/O operation is already in progress.

E_DISCONNECTED

COMM channel is closed.

E_PARAM

Invalid parameter.

Requirements