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Unregisters a doorbell notification.
Syntax
HRESULT
WINAPI
HdvUnregisterDoorbell(
HDV_DEVICE Requestor,
HDV_PCI_BAR_SELECTOR BarIndex,
UINT64 BarOffset,
UINT64 TriggerValue,
UINT64 Flags
);
Parameters
Requestor
A void pointer representing a handle to the device requesting to unregister the doorbell.
BarIndex
A HDV_PCI_BAR_SELECTOR specifying index of the BAR containing the address to unregister.
BarOffset
The address offset within the BAR.
TriggerValue
The value that when written will trigger the doorbell.
Flags
Specifies doorbell behaviors.
Return Value
If the function succeeds, the return value is S_OK.
If the function fails, the return value is an HRESULT error code.
Requirements
| Parameter | Description |
|---|---|
| Minimum supported client | Windows 10, version 1607 |
| Minimum supported server | Windows Server 2016 |
| Target Platform | Windows |
| Library | vmdevicehost.lib |
| Dll | vmdevicehost.dll |