Need help in developing an auto hide sidebar

I was doing something like you said this morning.

1. Add a panel and name it "ObjectExplorerPanel".
2. Add a button "pinButton" (for pinning and un-pinning) and set it's text to "pin", within the above panel.
3. Add a button "explorerCloseButton" (for closing the sidebar) within the above panel.
4. Add a button out of the panel "ShowOExpButton".

And do the code as it is here.

namespace Mero
{
    public partial class MeroMain : Form
    {
        public MeroMain()
        {
            InitializeComponent();
        }

        private void explorerCloseButton_Click(object sender, EventArgs e)
        {
            this.ObjectExplorerPanel.Hide();
        }

        private void objectExplorerToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.ObjectExplorerPanel.Show();
        }

        private void pinButton_Click(object sender, EventArgs e)
        {
            if (this.pinButton.Text == "pin")
            {
                this.pinButton.Text = "unpin";
                this.pinButton.BackgroundImage = Properties.Resources.unpin;
                this.ObjectExplorerPanel.Size = new Size(0, 438);
                this.showOExpButton.BringToFront();
            }
            else if (this.pinButton.Text == "unpin")
            {
                this.pinButton.Text = "pin";
                this.pinButton.BackgroundImage = Properties.Resources.pin;
                this.ObjectExplorerPanel.Size = new Size(200, 438);
            }
        }

        private void showOExpButton_Click(object sender, EventArgs e)
        {
            this.ObjectExplorerPanel.Size = new Size(200, 438);
            this.showOExpButton.SendToBack();
        }

        private void ObjectExplorerPanel_MouseLeave(object sender, EventArgs e)
        {
            if (this.pinButton.Text == "unpin")
            {
                this.ObjectExplorerPanel.Size = new Size(0, 438);
                this.showOExpButton.BringToFront();
            }
        }
    }
}

I could not upload the file so, i pasted the code over here.


Hope this helps.