Event when a window gets maximized/un-maximized

Question

Is there an event that is fired when you maximize a Form or un-maximize it?

Before you say Resize or SizeChanged: Those get only fired if t

Answer 1

Another little addition in order to check for the restore to the original dimension and position after the maximization:

protected override void WndProc(ref Message m)
{
    base.WndProc(ref m);

    // WM_SYSCOMMAND
    if (m.Msg == 0x0112)
    {
        if (m.WParam == new IntPtr(0xF030) // Maximize event - SC_MAXIMIZE from Winuser.h
            || m.WParam == new IntPtr(0xF120)) // Restore event - SC_RESTORE from Winuser.h
        {
            UpdateYourUI();
        }
    }
}

Hope this help.