Add Scrollbar.Value Fixed Rect.Contract by margin Move some UI structs to System so they can be used by Tools Move viewport to QAbstractScrollArea Add Scrollbar.PageStep, SingleStep Add BaseScrollWidget.OnScrollChangedf Add MarginProperty Connect SliderMoved Explicitly mark out of memory errors Prevent frameless window stuff messing with popups/tooltips Widget.OnDoubleClick calls OnMousePress by default Drag.Execute returns a DropAction Add Drag.SetImage Add smooth scrolling to BaseScrollWidget Create ScrollExperiment.cs Compatibility fix