VLViewport (Four Developers Pack) for Windows

The description of VLViewport (Four Developers Pack) - Play With New Friends

Auto adjust extent mode handles even dynamically added controls(controls that you add to the viewport control at runtime).Key FeaturesAutomatic adjustment of viewport extentAutomatically display or hide scrollbarsAutomatic scrolling of view port when user tabs through the contained controlsAutomatic filling of control's container, with margins on all sizes, on container resizesControl margins beyond the right most and bottom most contained controls