killing TCL/tk process in Windows batch file

[dr.mt...@gmail.com]

This is maybe the last non-Shen challenge in Shen/tk

and involves ending a process cleanly.  I'm copying

to this to Stackoverflow. This batch file

START /B sbcl-shen.exe
C:\ActiveTcl\bin\wish.exe "C:\Users\shend\OneDrive\Desktop\Shen\S38.3\StLib\Tk\root.tcl"

starts Shen/SBCL and allows the TCL/tk event loop in root to

kick in.  Everything seems to be peachy until I kill my application by 

exiting Shen and killing the root window.   

However a look at the task manager shows there is a TCL process

still running and this has to be killed lest it screw up the next session.

I'm having to kill this process in the task manager.  The question is - is there

a command that can be placed in the batch file to do what I have to do

in the task manager?

Mark

[Bruno Deferrari]

What are the contents of root.tcl? Maybe you need to somehow specify that the window is the main program window? or set up some hook when it gets closed so that the program exits?

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BD

[Bruno Deferrari]

This works for me:

proc on_close {} {

    exit

}

set mainWindow .

# With this line it works, without it wish doesn't exit

wm protocol $mainWindow WM_DELETE_WINDOW on_close

label .label -text "Test"

pack .label

vwait forever

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BD

[Bruno Deferrari]

https://www.tcl.tk/man/tcl8.6/TkCmd/wm.htm#M58 forgot the link, "wm protocol" is explained here

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BD

[dr.mt...@gmail.com]

I think the problem is that the root window

is a separate process to the TCL event loop.

Hence killing the Tk window does not kill the

event loop nor does killing Shen.   

I've found that to have a clean shutdown I have

had to program a function tk.exit in Shen to order the

event loop to end.  So the pattern is

(tk.exit)

 close down the Tk and Shen windows.  

Mark