This post originated from an RSS feed registered with .NET Buzz by -. Original Post: C#: Rahmenfarbe beim Panel ändern Feed Title: Norbert Eder - Living .NET Feed URL: http://feeds.feedburner.com/NorbertEder-Livingnet Feed Description: Copyright (c)2005, 2006 by Norbert Eder Latest .NET Buzz Posts Latest .NET Buzz Posts by - Latest Posts From Norbert Eder - Living .NET

public partial class PanelEx : Panel
{
    [DllImport("user32.dll")]
    private static extern IntPtr GetWindowDC(IntPtr hwnd);
    [DllImport("user32.dll")]
    private static extern int ReleaseDC(IntPtr hwnd, IntPtr hdc);

    private Color _borderColor = Color.Black;
    private int _borderWidth = 1;

    public int BorderWidth
    {
        get { return _borderWidth; }
        set { _borderWidth = value; }
    }

    public Color BorderColor
    {
        get { return _borderColor; }
        set { _borderColor = value; }
    }

    public PanelEx()
    {
        this.InitializeComponent();

        SetStyle
            (ControlStyles.DoubleBuffer,
            true);
        SetStyle
            (ControlStyles.AllPaintingInWmPaint,
            false);
        SetStyle
            (ControlStyles.ResizeRedraw,
            true);
        SetStyle
            (ControlStyles.UserPaint,
            true);
        SetStyle
            (ControlStyles.SupportsTransparentBackColor,
            true);

    }

    protected override void OnPaint(PaintEventArgs e)
    {
        base.OnPaint(e);

        if (this.BorderStyle == BorderStyle.FixedSingle)
        {
            IntPtr hDC = GetWindowDC(this.Handle);
            Graphics g = Graphics.FromHdc(hDC);

            ControlPaint.DrawBorder(
                g, 
                new Rectangle(0, 0, this.Width, this.Height), 
                _borderColor, 
                _borderWidth, 
                ButtonBorderStyle.Solid, 
                _borderColor, 
                _borderWidth, 
                ButtonBorderStyle.Solid, 
                _borderColor, 
                _borderWidth, 
                ButtonBorderStyle.Solid, 
                _borderColor, 
                _borderWidth, 
                ButtonBorderStyle.Solid);
            g.Dispose();
            ReleaseDC(Handle, hDC);
        }
    }
}