setVolume method

int setVolume(
  1. int usVolume
)

Implementation

int setVolume(int usVolume) => (ptr.ref.vtable + 30)
    .cast<Pointer<NativeFunction<Int32 Function(Pointer, Uint16 usVolume)>>>()
    .value
    .asFunction<
        int Function(Pointer, int usVolume)>()(ptr.ref.lpVtbl, usVolume);