[CODE]
private void FrmSchede_Load(object sender, EventArgs e)
        {
            FrmPalette frmPalette = new FrmPalette();
            this.AddOwnedForm(frmPalette);
            frmPalette.Show();
            pictureBox1.AllowDrop = true;
        }

        private void pictureBox1_DragDrop(object sender, DragEventArgs e)
        {
            Graphics g = pictureBox1.CreateGraphics();
            g.DrawImage((Image)e.Data.GetData(DataFormats.Bitmap), new Point(e.X - this.Left, e.Y - this.Top));
        }

        private void pictureBox1_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
            {
                e.Effect = DragDropEffects.Copy;
            }
            else
            {
                e.Effect= DragDropEffects.None;
            }
        }
[/CODE]