This is one of those things that’s obvious once you know it.  When dealing with COM, there is often a need to convert a WinForms Form object to an IntPtr handle, and vice versa.

Convert Handle to Form

static public Form GetForm( IntPtr handle )
    return handle == IntPtr.Zero ?
        null :
        Control.FromHandle( handle ) as Form;

Convert Form to Handle

Form form = new Form();
IntPtr handle = form.Handle;

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