static extern int Shell_NotifyIconGetRect([In]ref NOTIFYICONIDENTIFIER identifier, [Out]out RECT iconLocation);

    private static extern int Shell_NotifyIconGetRect([In]ref NOTIFYICONIDENTIFIER identifier, [Out]out RECT iconLocation);

        var hresult = Shell_NotifyIconGetRect(ref notifyIcon, out rect);

    static extern int Shell_NotifyIconGetRect([In]ref NOTIFYICONIDENTIFIER identifier, [Out]out RECT iconLocation);

    private static extern int Shell_NotifyIconGetRect([In]ref NOTIFYICONIDENTIFIER identifier, [Out]out RECT iconLocation);

        var hresult = Shell_NotifyIconGetRect(ref notifyIcon, out rect);

    /// when Shell_NotifyIcon is invoked.

    /// which icon to operate on when Shell_NotifyIcon is invoked. You can have multiple icons

    /// Shell_NotifyIcon. This member is only employed when using Shell_NotifyIcon to send an

Shell_NotifyIcon

            Shell_NotifyIcon(NIM_ADD, ref notdata);

static extern uint Shell_NotifyIcon(uint message, ref NOTIFYICONDATA data);