Disable hotkey instead of setting variable to 1

Added SingleInstance
Rerun clickInput() when input is cancelled

legacy.ahk

@@ -1,22 +1,28 @@
-clickAmount = 1
+#SingleInstance, Force
+Hotkey, LButton, Off
 
-MsgBox, 64, Welcome!, Welcome to Cheat Clicker`nCheat Clicker is pretty easy to use`nJust set the amount of times you want to click each time you click and press Enter`n`nHere are some useful hotkeys:`nF5 - Allows you to edit the click amount`nCtrl + F5 - Force exit Cheat Clicker`nNote: In some cases you might need to also use the fn key
+MsgBox, 64, Welcome!, Welcome to Cheat Clicker Legacy`nIt`'s pretty easy to use`nJust set the amount of times you want to click each time you click and press Enter`n`nHere are some useful hotkeys:`nF5 - Allows you to edit the click amount`nCtrl + F5 - Exit Cheat Clicker
 
 clickInput()
 {
-    global clickAmount
-    InputBox, clickAmount, Welcome!, Welcome to Cheat Clicker!`nHow many clicks do you want to do per click?`nCan only contain 0-9, SHOW, Default, Default, Center, Center, Locale,, 2
+    global
+    InputBox, clickAmount, Welcome!, Welcome to Cheat Clicker Legacy!`nHow many clicks do you want to do per click?`nCan only contain 0-9, SHOW, Default, Default, Center, Center, Locale,, 2
+    if ErrorLevel
+        clickInput()
 
     if clickAmount is not digit
     {
         Loop
         {
-            clickAmount := 1
-            InputBox, clickAmount, Welcome!, Welcome to Cheat Clicker!`nHow many clicks do you want to do per click?`nCan only contain keys 0-9, SHOW, Default, Default, Center, Center, Locale,, 2
+            Hotkey, LButton, Off
+            InputBox, clickAmount, Welcome!, Welcome to Cheat Clicker!`nHow many clicks do you want to do per click?`nYou must ONLY type characters 0 to 9, SHOW, Default, Default, Center, Center, Locale,, 2
+            if ErrorLevel
+                clickInput()
             if clickAmount is digit 
                 Break
         }
     }
+    Hotkey, LButton, On
 }
 
 clickInput()
@@ -29,10 +35,10 @@ loop, %clickAmount%
 Return
 
 F5::
-clickAmount = 1
+Hotkey, LButton, Off
 clickInput()
 Return
 
 ^F5::
 ExitApp
-Return
+Return