SetCommTimeouts

The SetCommTimeouts function sets the time-out parameters for all read and write operations on a specified communications device.

BOOL SetCommTimeouts(
  HANDLE hFile,                  // handle to comm device
  LPCOMMTIMEOUTS lpCommTimeouts  // pointer to comm time-out structure
);
 

Parameters

hFile

Handle to the communications device. The CreateFile function returns this handle.

lpCommTimeouts

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

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winbase.h.
  Import Library: Use kernel32.lib.

See Also

Communications Overview, Communication Functions, COMMTIMEOUTS, GetCommTimeouts, ReadFile, ReadFileEx, WriteFile, WriteFileEx