Question

This is a little C# specific. The default behaviour of a resizable dialog box is that a title bar click maximizes the dialog and a second double click restores the size. However, what I want is to have the Help button turned on, which means the minimize and maximize buttons are hidden, but I would still like the title bar double click behaviour. This might be achievable with some subclassing, but perhaps someone has some good ideas on this.

Answer 1

    private const int WM_NCLBUTTONDBLCLK = 0xA3;      protected override void WndProc(ref Message m)     {         switch (m.Msg)         {             case WM_NCLBUTTONDBLCLK:                 if (this.WindowState==System.Windows.Forms.FormWindowState.Maximized)                     this.WindowState=System.Windows.Forms.FormWindowState.Normal;                 else if (this.WindowState == System.Windows.Forms.FormWindowState.Normal)                     this.WindowState = System.Windows.Forms.FormWindowState.Maximized;                 return;         }         base.WndProc(ref m);     }