Pass the command while closing Hw.Tk GUI

User: "Hypermesh User"
Hypermesh User
Altair Community Member
Updated by Hypermesh User

Hi,

  I want to pass the command while closing the GUI that will unregister the proc and Unset the variables.

 

FYI:  I no need to add a separate close button, I want to add it in that window closing button. 

 

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HyperMesh
v2020.0
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    User: "tinh"
    tinh
    Altair Community Member
    Accepted Answer
    Updated by tinh

    Hi,

    That close button is not belonged to Tk but Windows

    So, must use window manager (wm)...

    Example:

    proc onClosing {window} {    puts -nonewline "Closing window... "    set ans [tk_messageBox -title "Confirm" -message "Are you sure closing me?" -type yesno]    if {$ans == "yes"} {       #unset your variables here...       #unregister your procs here...              #finally, must explicit destroy the window:       destroy $window       puts "Done!"    } else {       puts "but not!"    } }  set w .sampleWindow destroy $w toplevel $w wm title $w "Sample closing window" pack [label $w.l -text "Close me by clicking on [X] upper left"] wm protocol $w WM_DELETE_WINDOW [list onClosing $w]
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