addDays method
Implementation
void addDays(int days) {
final hr = ptr.ref.vtable
.elementAt(54)
.cast<
Pointer<
NativeFunction<
HRESULT Function(VTablePointer lpVtbl, Int32 days)>>>()
.value
.asFunction<int Function(VTablePointer lpVtbl, int days)>()(
ptr.ref.lpVtbl, days);
if (FAILED(hr)) throwWindowsException(hr);
}