getCount method
Implementation
int getCount(Pointer<Uint32> pCount) => (ptr.ref.vtable + 4)
.cast<
Pointer<
NativeFunction<
Int32 Function(Pointer, Pointer<Uint32> pCount)>>>()
.value
.asFunction<int Function(Pointer, Pointer<Uint32> pCount)>()(
ptr.ref.lpVtbl, pCount);