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NotifyNetworkConnectivityHintChange function (netioapi.h)

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Registers an application-defined callback function, to be called when the aggregate network connectivity level and cost hints change.

Syntax

IPHLPAPI_DLL_LINKAGE _NETIOAPI_SUCCESS_ NETIOAPI_API NotifyNetworkConnectivityHintChange(
  [in]  PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK Callback,
  [in]  PVOID                                      CallerContext,
  [in]  BOOLEAN                                    InitialNotification,
  [out] PHANDLE                                    NotificationHandle
);

Parameters

[in] Callback

A function pointer of type PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK, which points to your application-defined callback function. The callback function will be invoked when a network connectivity level or cost change occurs.

[in] CallerContext

The user-specific caller context. This context will be supplied to the callback function.

[in] InitialNotification

True if an initialization notification should be provided, otherwise false.

[out] NotificationHandle

A pointer to a HANDLE. The function sets the value to a handle to the notification registration.

Return value

If the function succeeds, the return value is NO_ERROR. Otherwise, an error code is returned.

Remarks

To deregister for change notifications, call the CancelMibChangeNotify2 function, passing the NotificationHandle parameter returned by NotifyNetworkConnectivityHintChange.

Requirements

Requirement Value
Minimum supported client Windows 10, version 2004 (10.0; Build 19041)
Minimum supported server Windows Server, version 2004 (10.0; Build 19041)
Target Platform Windows
Header netioapi.h (include Iphlpapi.h)
Library Iphlpapi.lib
DLL Iphlpapi.dll

See also