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  1. Home/
  2. Yeshwanth N/
  3. Creating GUI of the calculator

Creating GUI of the calculator

Creating the calculator GUI :   Aim : To create a simple addition and subtraction window in hypermesh by writing Tcl/Tk code as shown in below Figure 1. Figure 1-Addition and Subtraction Window. To press the corresponding buttons in the addition and subtraction window, So the text boxes should indicate…

    • Yeshwanth N

      updated on 29 Dec 2021

    Creating the calculator GUI :

     

    Aim :

    • To create a simple addition and subtraction window in hypermesh by writing Tcl/Tk code as shown in below Figure 1.

    Figure 1-Addition and Subtraction Window.
    • To press the corresponding buttons in the addition and subtraction window, So the text boxes should indicate the corresponding values.
    • To create the GUI layout of the calculator of our choice which is shown in below Figure 2 and, Create all dummy buttons.

     

    Figure 2-GUI Layout Window. 

     

    Procedure :

     

    1) Create a simple addition and subtraction window :

    • First write a tcl/tk code to set up a window, Which is written down here 👇

     

    set top .window
catch {destroy $top}
toplevel $top -class TopLevel
wm title $top "Addition and Subtraction"
wm geometry $top 150x100+100+50; update
wm resizable $top 0 0
wm deiconify $top

    Creating Buttons :

    • Two aspects need to be dealt with while dealing with buttons.

    1)Button Behaviour

    2)Button Placement

    button $windowpath -text "Text" -command {something}

    place $windowpath -x value -y value -width value -height value

    "button" command creates the button with its different attributes including what commands to execute

    "place" command places the button geometry in the current frame. This involves the following :

    1. Location
    2. Height and Width

    Creating Entry Box :

    entry $top.01 -textvariable "::myvar"

    place $top.01 -x 50 -y 50

    Tcl/Tk code written for creating Buttons and Entry Box which is written down here

    button $top.01 -text "A=";  place $top.01 -x 10 -y 10 -width 60 -height 20

    entry $top.02 -textvariable ::A;  place $top.02 -x 80 -y 10  -width 60 -height 20

     

    button $top.03 -text "B=";  place $top.03 -x 10 -y 30 -width 60 -height 20

    entry $top.04 -textvariable ::B;  place $top.04 -x 80 -y 30  -width 60 -height 20

     

    button $top.05 -text "SUM" -command {set ::D [expr $::A+$::B]};  place $top.05 -x 10 -y 50 -width 60 -height 20

     

    entry $top.06 -textvariable ::D;  place $top.06 -x 80 -y 50  -width 60 -height 20

     

    button $top.07 -text "SUB" -command {set ::E [expr $::A-$::B]};  place $top.07 -x 10 -y 70 -width 60 -height 20

     

     

    entry $top.08 -textvariable ::E;  place $top.08 -x 80 -y 70 -width 60 -height 20

     

    Figure 3-Tcl/Tk code written to create add and sub layout.

     

    set top .window
catch {destroy $top}
toplevel $top -class TopLevel
wm title $top "Addition and Subtraction"
wm geometry $top 150x100+100+50; update
wm resizable $top 0 0
wm deiconify $top 

button $top.01 -text "A="; 						place $top.01 -x 10 -y 10 -width 60 -height 20
entry $top.02 -textvariable ::A; 					place $top.02 -x 80 -y 10  -width 60 -height 20

button $top.03 -text "B="; 						place $top.03 -x 10 -y 30 -width 60 -height 20
entry $top.04 -textvariable ::B; 					place $top.04 -x 80 -y 30  -width 60 -height 20

button $top.05 -text "SUM" -command {set ::D [expr $::A+$::B]}; 	place $top.05 -x 10 -y 50 -width 60 -height 20

entry $top.06 -textvariable ::D; 					place $top.06 -x 80 -y 50  -width 60 -height 20

button $top.07 -text "SUB" -command {set ::E [expr $::A-$::B]}; 	place $top.07 -x 10 -y 70 -width 60 -height 20

entry $top.08 -textvariable ::E; 	                                place $top.08 -x 80 -y 70  -width 60 -height 20

     

    Figure 4-Tcl/Tl Code for Add and Sub Layout.

     

    2) Create the GUI layout of any calculator of your choice. Create all dummy buttons :

    • Tcl/Tk code is written to create a calculator GUI layout, Which is written down here 👇
    set top .window
catch {destroy $top}
toplevel $top -class TopLevel
wm title $top "Calculator"
wm geometry $top 300x280+100+40; update
wm resizable $top 0 0
wm deiconify $top 

button $top.01 -text "CE"; 							place $top.01 -x 10 -y 60 -width 60 -height 20
button $top.02 -text "C"; 							place $top.02 -x 80 -y 60  -width 60 -height 20
button $top.03 -text "⌫"; 							place $top.03 -x 150 -y 60  -width 60 -height 20
button $top.04 -text "7"; 							place $top.04 -x 10 -y 100 -width 60 -height 20
button $top.05 -text "8"; 							place $top.05 -x 80 -y 100 -width 60 -height 20
button $top.06 -text "9"; 							place $top.06 -x 150 -y 100 -width 60 -height 20
button $top.07 -text "4"; 							place $top.07 -x 10 -y 140 -width 60 -height 20
button $top.08 -text "5"; 							place $top.08 -x 80 -y 140 -width 60 -height 20
button $top.09 -text "6"; 							place $top.09 -x 150 -y 140 -width 60 -height 20
button $top.010 -text "1"; 							place $top.010 -x 10 -y 180 -width 60 -height 20
button $top.011 -text "2"; 							place $top.011 -x 80 -y 180 -width 60 -height 20
button $top.012 -text "3"; 							place $top.012 -x 150 -y 180 -width 60 -height 20
entry $top.013; 									place $top.013 -x 10 -y 10  -width 270 -height 40
button $top.014 -text "÷"; 							place $top.014 -x 220 -y 60  -width 60 -height 20
button $top.015 -text "X"; 							place $top.015 -x 220 -y 100 -width 60 -height 20
button $top.016 -text "-"; 							place $top.016 -x 220 -y 140 -width 60 -height 20
button $top.017 -text "+"; 							place $top.017 -x 220 -y 180 -width 60 -height 20
button $top.018 -text "±"; 							place $top.018 -x 10 -y 220 -width 60 -height 20
button $top.019 -text "0"; 							place $top.019 -x 80 -y 220 -width 60 -height 20
button $top.020 -text "."; 							place $top.020 -x 150 -y 220 -width 60 -height 20
button $top.021 -text "="; 							place $top.021 -x 220 -y 220 -width 60 -height 20

     

    Figure 5-Tcl/Tk code written for creating calculator GUI.

     

    Figure 6-Tcl/Tk code written for creating calculator GUI.

     

    Result :

     

    • Hence created a simple addition and subtraction window in hypermesh by writing Tcl/Tk code.
    • Hence created the GUI layout of the calculator of our choice and created all the dummy buttons.

     

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