SetCommConfig function (winbase.h)

Sets the current configuration of a communications device.

Syntax

BOOL SetCommConfig(
  [in] HANDLE       hCommDev,
  [in] LPCOMMCONFIG lpCC,
  [in] DWORD        dwSize
);

[in] hCommDev

A handle to the open communications device. The CreateFile function returns this handle.

[in] lpCC

A pointer to a COMMCONFIG structure.

[in] dwSize

The size of the structure pointed to by lpCC, in bytes.

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.

Requirement	Value
Minimum supported client	Windows XP [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2003 [desktop apps \| UWP apps]
Target Platform	Windows
Header	winbase.h (include Windows.h)
Library	Kernel32.lib
DLL	Kernel32.dll