GetUsage method
Implementation
int GetUsage(Pointer<Int32> pfut) => ptr.ref.vtable
.elementAt(4)
.cast<
Pointer<
NativeFunction<Int32 Function(Pointer, Pointer<Int32> pfut)>>>()
.value
.asFunction<
int Function(Pointer, Pointer<Int32> pfut)>()(ptr.ref.lpVtbl, pfut);