How to resolve the algorithm Menu step by step in the AutoHotkey programming language

Published on 12 May 2024 09:40 PM
#Autohotkey

How to resolve the algorithm Menu step by step in the AutoHotkey programming language

Table of Contents

Problem Statement

Given a prompt and a list containing a number of strings of which one is to be selected, create a function that:

The function should reject input that is not an integer or is out of range by redisplaying the whole menu before asking again for a number. The function should return an empty string if called with an empty list. For test purposes use the following four phrases in a list: This task is fashioned after the action of the Bash select statement.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Menu step by step in the AutoHotkey programming language

Source code in the autohotkey programming language

Menu(list:=""){
	if !list			; if called with an empty list
		return			; return an empty string
	for i, v in x := StrSplit(list, "`n", "`r")
		string .= (string?"`n":"") i "- " v
		, len := StrLen(v) > len ? StrLen(v) : len
	while !x[Choice]
		InputBox , Choice, Please Select From Menu, % string ,, % 200<len*7 ? 200 ? len*7 , % 120 + x.count()*20
	return x[Choice]
}


list = 
(
fee fie
huff and puff
mirror mirror
tick tock
)
MsgBox % Menu(list)		; call menu with list
MsgBox % Menu()			; call menu with empty list
return

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