|Microsoft DirectX 9.0|
This topic applies to Windows XP Service Pack 1 only.
The SetAllocator method specifies an allocator-presenter for the VMR as an IUnknown pointer.
This method is provided for Automation clients. C++ applications can also use the _SetAllocator method, which takes an IVMRSurfaceAllocator pointer.
HRESULT SetAllocator( IUnknown *pAllocPresent, long ID = -1 );
[in] Pointer to the IUnknown interface of the allocator-presenter object.
[in] Optionally, specifies an identifier (ID) for the allocator-presenter object. The default value of -1 indicates that the MSVidVideoRenderer object will create an ID when it builds the filter graph. In that case, the MSVidVideoRenderer object uses the lower 32 bits of the allocator-presenter's IUnknown interface pointer as the ID. Note that the ID is for application use; the VMR does not use it.
Returns an HRESULT value. Possible values include the following.