How to resolve the algorithm GUI enabling/disabling of controls step by step in the AutoHotkey programming language

Published on 12 May 2024 09:40 PM
#Autohotkey

How to resolve the algorithm GUI enabling/disabling of controls step by step in the AutoHotkey programming language

Table of Contents

Problem Statement

In addition to fundamental GUI component interaction, an application should dynamically enable and disable GUI components, to give some guidance to the user, and prohibit (inter)actions which are inappropriate in the current state of the application.

Similar to the task GUI component interaction, write a program that presents a form with three components to the user:

The field is initialized to zero. The user may manually enter a new value into the field, increment its value with the "increment" button, or decrement the value with the "decrement" button. The input field should be enabled only when its value is zero. The "increment" button only as long as the field's value is less then 10: When the value 10 is reached, the button should go into a disabled state. Analogously, the "decrement" button should be enabled only as long as the value is greater than zero. Effectively, the user can now either increment up to 10, or down to zero. Manually entering values outside that range is still legal, but the buttons should reflect that and enable/disable accordingly.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm GUI enabling/disabling of controls step by step in the AutoHotkey programming language

Source code in the autohotkey programming language

GUI, Add, Edit, w150 number vValue gEnableDisable, 0 ; Number specifies a numbers-only edit field. g<Subroutine> specifies a subroutine to run when the value of control changes.
GUI, Add, button,, Increment
GUI, Add, button, xp+70 yp, Decrement ; xp+70 and yp are merely positioning options
GUI, Show, w200 y200, Title	      ; Shows the GUI. Add your own title if you wish
;No timer is needed
return 				      ; ----------End Auto-Execute Section----------

ButtonIncrement:
    GUI, Submit, NoHide         ; "Set the contents of each variable to the contents of their corresponding controls without hiding the GUI"
    If ( value < 10 )           ; Just in case EnableDisable didn't disable the button it in time.
        Value++                 ; Increment Value
    GUIControl,, Value, %value% ; "Set the text of the control which alters the variable 'value' to the contents of 'value'"
return


ButtonDecrement:
    GUI, Submit, Nohide
    If value > 0
        Value--
    GuiControl,, Value, %value%
return


EnableDisable:
    GUI, Submit, Nohide
    If ( value < 10 )
        GuiControl, enable, Increment
    Else
        GuiControl, disable, Increment

    If ( value > 0)
        GuiControl, enable, Decrement
    Else
        GuiControl, disable, Decrement

    If ( value = 0 )
        GuiControl, enable, Edit1
    Else
        GuiControl, disable, Edit1
return


GuiClose:
    ExitApp
; Ensures the script ends when the GUI is closed.

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