WSACloseEvent function (winsock2.h)

Article
02/22/2024

The WSACloseEvent function closes an open event object handle.

Syntax

BOOL WSAAPI WSACloseEvent(
  [in] WSAEVENT hEvent
);

Parameters

[in] hEvent

Object handle identifying the open event.

Return value

If the function succeeds, the return value is TRUE.

If the function fails, the return value is FALSE. To get extended error information, call WSAGetLastError.

Error code	Meaning
WSANOTINITIALISED	A successful WSAStartup call must occur before using this function.
WSAENETDOWN	The network subsystem has failed.
WSAEINPROGRESS	A blocking Windows Sockets 1.1 call is in progress, or the service provider is still processing a callback function.
WSA_INVALID_HANDLE	The hEvent is not a valid event object handle.

Remarks

The WSACloseEvent function closes the handle to an event object and frees resources associated with the event object. This function is used to close a handle created by the WSACreateEvent function. Once the handle to the event object is closed, further references to this handle will fail with the error WSA_INVALID_HANDLE.

Windows Phone 8: This function is supported for Windows Phone Store apps on Windows Phone 8 and later.

Windows 8.1 and Windows Server 2012 R2: This function is supported for Windows Store apps on Windows 8.1, Windows Server 2012 R2, and later.

Requirements

Requirement	Value
Minimum supported client	Windows 8.1, Windows Vista [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2003 [desktop apps \| UWP apps]
Target Platform	Windows
Header	winsock2.h
Library	Ws2_32.lib
DLL	Ws2_32.dll