winform设置竖向的tabcontrol

要设置竖向的TabControl，可以使用如下代码：

public class VerticalTabControl : TabControl
{
    protected override void OnHandleCreated(EventArgs e)
    {
        base.OnHandleCreated(e);

        if (!DesignMode && Alignment == TabAlignment.Left)
        {
            var style = NativeMethods.SendMessage(Handle, NativeMethods.TCM_GETEXTENDEDSTYLE, IntPtr.Zero, IntPtr.Zero);
            style |= NativeMethods.TCS_VERTICAL | NativeMethods.TCS_TABS | NativeMethods.TCS_MULTILINE;
            NativeMethods.SendMessage(Handle, NativeMethods.TCM_SETEXTENDEDSTYLE, IntPtr.Zero, (IntPtr)style);
        }
    }

    private static class NativeMethods
    {
        public const int TCM_GETEXTENDEDSTYLE = 0x4D0;
        public const int TCM_SETEXTENDEDSTYLE = 0x4D1;
        public const int TCS_VERTICAL = 0x0080;
        public const int TCS_TABS = 0x0000;
        public const int TCS_MULTILINE = 0x0200;

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);
    }
}

然后在窗体中使用VerticalTabControl替换原来的TabControl即可。

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