IBackgroundCopyCallback::JobModification method (bits.h)
BITS calls your implementation of the JobModification method when the job has been modified. The service generates this event when bytes are transferred, files have been added to the job, properties have been modified, or the state of the job has changed.
HRESULT JobModification( IBackgroundCopyJob *pJob, DWORD dwReserved );
Contains the methods for accessing property, progress, and state information of the job. Do not release pJob; BITS releases the interface when the JobModification method returns.
Reserved for future use.
This method should return S_OK.
Your implementation may not receive all modification events under maximum resource load conditions.
BITS generates a high volume of modification events; consider creating a timer and polling for state and progress information or limiting your use of this callback. If you use this callback, keep your implementation short.
BITS does not generate a modify event when the state of the job changes to BG_JOB_STATE_ERROR or BG_JOB_STATE_TRANSFERRED.
See the example code for the IBackgroundCopyCallback interface.
|Minimum supported client||Windows XP|
|Minimum supported server||Windows Server 2003|