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Unregisters an ETW event provider.
All event providers registered by a component must be unregistered before the component unloads. If a DLL registers an event provider and then unloads without unregistering the event provider, the process may crash.
Syntax
ULONG EVNTAPI EventUnregister(
[in] REGHANDLE RegHandle
);
Parameters
[in] RegHandle
Event provider registration handle returned by EventRegister.
Return value
Returns ERROR_SUCCESS if successful.
Remarks
If EventRegister fails, it returns a zero-valued RegHandle. ETW APIs such as EventWrite and EventUnregister will safely accept a zero-valued RegHandle value, do nothing, and return immediately. Callers do not need to check for a zero-valued RegHandle before calling EventWrite or EventUnregister.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | evntprov.h |
| Library | Advapi32.lib |
| DLL | Advapi32.dll |