Context menu in specific window

[Davider]

I would like to know the equivalent code of the following QM code in LA.
This involves a lot of things, and as a sample, it would be very helpful for those who already have a grasp of QM.
Thank you in advance

Feature description:
In the notepad2(https://www.flos-freeware.ch/notepad2.html) window, depending on whether text is selected or not, right-clicking will display different menus

Function FFS_NP_Editor
Trigger #R //FFS_NP_Editor     
 

Code:

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;/
function# iid FILTER&f

if(wintest(f.hwnd "" "Notepad*"))
,if(childtest(f.hwnd2 "" "Scintilla"))
,,if !SendMessageW(f.hwnd2 SCI.SCI_GETSELECTIONEMPTY 0 0)
,,,ret "Select_NP" ;;Text selected
,,else
,,,ret "Empty_NP" ;;No text selected

ret -2

Menu Select_NP
 

Code:

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S_test1 :sub.Sub1 * findacc.ico
|
>S_test2 * findacc.ico
,S_test21 :sub.Sub2 * findacc.ico
<

#sub Sub1 m
paste "S_test1"

#sub Sub2 m
key "S_test21"

Menu Empty_NP

Code:

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E_test1 :sub.Sub1 * findacc.ico
|
>E_test2 * findacc.ico
,E_test21 :sub.Sub2 * findacc.ico
<

#sub Sub1 m
paste "E_test1"

#sub Sub2 m
key "E_test21"