Trackbar constructor

Trackbar(String name, Window parent, int max, { int? value, })

Implementation

Trackbar(this.name, this.parent, this.max, {int? value}) {
  cvRunArena((arena) {
    final ppname = parent.name.toNativeUtf8(allocator: arena).cast<ffi.Char>();
    final cname = name.toNativeUtf8(allocator: arena).cast<ffi.Char>();
    cvRun(() => chighgui.Trackbar_Create(ppname, cname, max));
    if (value != null) {
      pos = value;
    }
  });
}