C#

[DllImport("user32.dll", EntryPoint = "OpenClipboard", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool OpenClipboard(IntPtr hWnd);

[DllImport("user32.dll", EntryPoint = "GetClipboardData", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern IntPtr GetClipboardData(int uFormat);

[DllImport("user32.dll", EntryPoint = "EnumClipboardFormats", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern int EnumClipboardFormats(int i);

private void button1_Click(object sender, EventArgs e)
 {
     //Copy the contents of the rich textbox to the clipboard
     richTextBox1.Copy();

     //Open the clipboard
     if (OpenClipboard(this.Handle))
     {
         //int i = 0;
         //bool done = false;
         //int[] formats = new int [10];
         //while (! done)
         //{
         //    formats[i] =  EnumClipboardFormats(i);
         //    if (formats[i] == 0) done = true;
         //    i++;
         //}

         Metafile MF = new Metafile(GetClipboardData(2), true);
         MF.Save("C:\\Temp\\MF.bmp", ImageFormat.Bmp);
     }

 }