Analog Clock - Draw clocks arm over a Label

Question

I\'m using WinForms to create a clock. The problem is the clocks hand is going under my panel/label. I tried to paint the hand on top of my panel/label but I wasn\'t success

Answer 1

Don't use a TextBox to show the text, draw the text yourself.

The drawings which you draw on the Graphics object of a Control will be drawn on surface of the control and can not be drawn over the child controls or other stacked controls. So in above code instead of using a TextBox to show the text, you should draw text using TextRenderer.DrawText.

Example

Handle Tick event of a timer with Interval set to 1000 and call pictureBox1.Invalidate(); in the Tick event handler. Then in handle Paint event of the picture box this way:

private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
    var g = e.Graphics;
    g.SmoothingMode = SmoothingMode.AntiAlias;
    g.Clear(Color.White);
    var r1 = this.pictureBox1.ClientRectangle;
    r1.Inflate(-3, -3);
    g.DrawEllipse(Pens.Black, r1);
    var r2 = r1;
    r2.Inflate(-5, -5);
    TextRenderer.DrawText(g, DateTime.Now.ToString("HH:mm:ss"), this.Font,
        new Rectangle(r1.Left, r1.Top + 2 * r1.Height / 3, r1.Width, r1.Height / 3),
        Color.Black);
    e.Graphics.TranslateTransform(r2.Left + r2.Width / 2, r2.Top + r2.Height / 2);
    var c = g.BeginContainer();
    g.SmoothingMode = SmoothingMode.AntiAlias;
    e.Graphics.RotateTransform(DateTime.Now.Hour * 30f + DateTime.Now.Minute / 2f);
    g.FillEllipse(Brushes.Black, -5, -5, 10, 10);
    using (var p = new Pen(Color.Black, 4))
        g.DrawLine(p, 0, 0, 0, -r2.Height / 2 + 30);
    g.EndContainer(c);
    c = g.BeginContainer();
    g.SmoothingMode = SmoothingMode.AntiAlias;
    e.Graphics.RotateTransform(DateTime.Now.Minute * 6);
    using (var p = new Pen(Color.Black, 2))
        g.DrawLine(p, 0, 0, 0, -r2.Height / 2 + 10);
    g.EndContainer(c);
    c = g.BeginContainer();
    g.SmoothingMode = SmoothingMode.AntiAlias;
    e.Graphics.RotateTransform(DateTime.Now.Second * 6);
    using (var p = new Pen(Color.Red, 2))
        g.DrawLine(p, 0, 10, 0, -r2.Height / 2 + 15);
    g.EndContainer(c);
}

Then the result would be like this: