问如何消除TabControl上的差距？

EN

    //HACK: to ensure that the tabpage draws correctly (the border will get clipped and
    // and gradient fill will match correctly with the tabcontrol).  Unfortunately, there is no good way to determine
    // the padding used on the tabpage.
    // I would like to use the following below, but GetMargins is busted in the theming API:
    //VisualStyleRenderer visualStyleRenderer = new VisualStyleRenderer(VisualStyleElement.Tab.Pane.Normal);
    //Padding themePadding = visualStyleRenderer.GetMargins(e.Graphics, MarginProperty.ContentMargins);