How can I control external window(3270 emulator) through smallTalk?

I am trying to access the "Disconnect" or "Connect" Button so that I can press it using SmallTalk. Unfortunately, once the window is disconnected, Abt3270Terminal methods are all useless. Thus, I've been trying to use OSCalls 

Solutions I've tried: 

Getting OSHwnd like so; OSHwnd findWindow: nil lpszWindow: 'Session D'.

this returns a window handle that I try passing to OSWidget findWidget: OSHwnd. However, I always get a return of nil, no matter what. If I do OSWidget focusWidget- that works fine, but does not help me in any way because I need the emulator window, this is just the focused windowed.

I've tried using DDE but it does not return 3270 sessions as one of the available topics/subjects. (It should be IBM3270 or IBM327032 but there is nothing)

I've tried using OLE objects , something like MpAbstractOleInterface new createRootOleObject: 'HostExplorer.SessionOptions' .  But what now? How can I control any of the menus?

I've had major luck using OShmenu which allows to return different state of menus and manipulation, but there is no way to click a menu item......

tl;dr: I need to get control of 3270 emulator window menus and send a click event to the connect button.

I am trying to access the "Disconnect" or "Connect" Button so that I can press it using SmallTalk. Unfortunately, once the window is disconnected, Abt3270Terminal methods are all useless. Thus, I've been trying to use OSCalls 

Solutions I've tried: 

Getting OSHwnd like so; OSHwnd findWindow: nil lpszWindow: 'Session D'.

this returns a window handle that I try passing to OSWidget findWidget: OSHwnd. However, I always get a return of nil, no matter what. If I do OSWidget focusWidget- that works fine, but does not help me in any way because I need the emulator window, this is just the focused windowed.

I've tried using DDE but it does not return 3270 sessions as one of the available topics/subjects. (It should be IBM3270 or IBM327032 but there is nothing)

I've tried using OLE objects , something like MpAbstractOleInterface new createRootOleObject: 'HostExplorer.SessionOptions' .  But what now? How can I control any of the menus?

I've had major luck using OShmenu which allows to return different state of menus and manipulation, but there is no way to click a menu item......

tl;dr: I need to get control of 3270 emulator window menus and send a click event to the connect button.

I am using Abt3270Terminal classes which connect to the presentation space and controls the emulator. The problem is that once the emulator is disconnected - you cannot send messages to the host presentation space anymore or detect that the session is disconnected.