winforms - Restore WindowState from Minimized

Question

Is there an easy method to restore a minimized form to its previous state, either Normal or Maximized? I'm expecting the same functionality as clicking the taskbar (or right-clicking and choosing restore).

So far, I have this, but if the form was previously maximized, it still comes back as a normal window.

if (docView.WindowState == FormWindowState.Minimized)
    docView.WindowState = FormWindowState.Normal;

Do I have to handle the state change in the form to remember the previous state?

question from:https://stackoverflow.com/questions/354445/restore-windowstate-from-minimized

Answer 1

I use the following extension method:

using System.Runtime.InteropServices;

namespace System.Windows.Forms
{
    public static class Extensions
    {
        [DllImport( "user32.dll" )]
        private static extern int ShowWindow( IntPtr hWnd, uint Msg );

        private const uint SW_RESTORE = 0x09;

        public static void Restore( this Form form )
        {
            if (form.WindowState == FormWindowState.Minimized)
            {
                ShowWindow(form.Handle, SW_RESTORE);
            }
        }
    }
}

Then call form.Restore() in my code.