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lianhc

why raise a error as following,Subscript used on non-accessible variable.:

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#include <WinAPIFiles.au3>
 
#include <Array.au3>
#include <GuiConstantsEx.au3>
#include <GuiListView.au3>
 
 
Global Const $groupNUM = 4  ; 共四组参数
Global const $G[4][2] = [[2,5], [6,10], [11,15], [16,20]] ;参数
 
;;;;;;;;;;;;;;
_Main()
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Func _Main()
for $g = 1 to $groupNUM
setMCParam( $g )
Next
 
MsgBox(4160, "信息", " " & $G[1][1])
EndFunc   ;==>_Main
 
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Func setMCParam( $f_g )
MsgBox(4160, "信息",  $G[$f_g-1][0]  & " " )
EndFunc
 
 
;;;;why raise a error as following,
;;;; test1.au3" (21) : ==> Subscript used on non-accessible variable.:
;;;;MsgBox(4160, "??", " " & $G[1][1])
;;;;MsgBox(4160, "??", " " & $G^ ERROR

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When you redeclared the Global $G inside the function, it created a new Local variable with the same name, so after the For loop, $G is a simple variable and not an array any longer. Use a different variable name for your For loop and the problem will go away. The scope of the For loop's variable in this example is Local to the function _Main.


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
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I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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