IVdsAsync::QueryStatus method (vds.h)

[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]

Returns when the asynchronous operation is in progress, or has either finished successfully or failed.

Syntax

HRESULT QueryStatus(
  [out] HRESULT *pHrResult,
  [out] ULONG   *pulPercentCompleted
);

Parameters

[out] pHrResult

The address of an HRESULT for the asynchronous operation passed in by the caller. If the operation is in progress, the value is VDS_E_OPERATION_PENDING. If the operation has finished, the value is the returned HRESULT of the operation.

[out] pulPercentCompleted

The address of a ULONG passed in by the caller, representing the status of the asynchronous operation, given as a percentage. If the operation is in progress, the value is between 0 and 99. If the operation has finished, the value is 100. If the progress of the operation cannot be estimated, the value is 0.

Return value

This method can return standard HRESULT values, such as E_INVALIDARG or E_OUTOFMEMORY, and VDS-specific return values. It can also return converted system error codes using the HRESULT_FROM_WIN32 macro. Errors can originate from VDS itself or from the underlying VDS provider that is being used. Possible return values include the following.

Remarks

The QueryStatus method does not wait for the operation to complete before returning.

Requirements

See also

IVdsAsync