KSMETHOD_ITEM_IRP_STORAGE macro (ks.h)

This macro accesses a pointer to the relevant KSMETHOD_ITEM. Note that this pointer is only set when using KsMethodHandlerWithAllocator.

Syntax

void KSMETHOD_ITEM_IRP_STORAGE(
  [in]  Irp
);

[in] Irp

Specifies the IRP passed to the handler routine.

None

The pointer to a KSMETHOD_ITEM structure is extracted from Irp->Tail.Overlay.DriverContext. Parameters in DriverContext are initialized by KsMethodHandler and KsMethodHandlerWithAllocator.

The macro is defined as follows:

#define KSMETHOD_ITEM_IRP_STORAGE(Irp)  (*(const KSMETHOD_ITEM**)&(Irp)->;Tail.Overlay.DriverContext[3])

Requirement	Value
Target Platform	Desktop
Header	ks.h (include Ks.h)