protected override void PostParse()
{
base.PostParse();
_value.Set(0.0f);
_thumbMaterial = idE.DeclManager.FindMaterial(_thumbMaterialName);
_thumbMaterial.Sort = (float) MaterialSort.Gui;
_thumbWidth = _thumbMaterial.ImageWidth;
_thumbHeight = _thumbMaterial.ImageHeight;
this.Flags |= WindowFlags.HoldCapture | WindowFlags.CanFocus;
InitCvar();
}