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llgg716

Error: cannot assign values to constants

16 posts in this topic

#1 ·  Posted (edited)

Regarding to pass a parameter/argument to my compiled .au3 ->.exe, I read the help on Command Line Parameters zillions times, but I still don't get it right.

my sample code is: "sample.au3"

$CmdLine[0] = 1
MsgBox(0, "", "The argument is " &  $CmdLine[1])

I compile to sample.exe. When I run it in DOS command line:

sample.exe "123"

I always have Autoit error message popup:

AutoIt error:

Error: Cannot assign values to constants

I've been search out some similar questions in this forum, some answer like:  $CmdLine[1] is a constant, can not be used as by passing in a variable.

But hey, that is my purpose. I need to pass a variable into a AutoIT compiled .exe. I need to call autoit compiled .exe and passing in a variable in my C# code. However I failed to do it even in DOS command line.

Again, I already read the HELP regarding "Command Line Parameters", I already search the similar topic in this forum, please help to show me how to correct my sample code make it work.
 

Edited by llgg716

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#2 ·  Posted (edited)

The cmdline array is for reading, not setting...show us how you are calling the script.

For $i = 1 To UBound($CmdLine) - 1
    ConsoleWrite($CmdLine[$i] & @CRLF)
Next
Edited by jdelaney
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You can copy the variable.

Local $aCmdLine = $CmdLine ; This is an internal AutoIt constant.
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Updated: 04/09/2015

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I'm guessing you're confusing how a batch file process a command line parameter and how AutoIt does it.

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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
How to ask questions the smart way!

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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I'm guessing you're confusing how a batch file process a command line parameter and how AutoIt does it.

 

I am absolutely confused here. Please clarify me on this.

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You can copy the variable.

Local $aCmdLine = $CmdLine ; This is an internal AutoIt constant.

You are right. I tried this out and failed as well before I post my question here. It got the same error. After reading the help and other topics in this forum, I realize $CmdLine[x] is a constant and I can't pass in a variable to it through DOS command line. But how can I pass a variable into my autoit compiled .exe?

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#7 ·  Posted (edited)

Pass a variable or a command param?

Edited by guinness

_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_BinaryBin()_CheckMsgBox()_CmdLineRaw()_ContextMenu()_ConvertLHWebColor()/_ConvertSHWebColor()_DesktopDimensions()_DisplayPassword()_DotNet_Load()/_DotNet_Unload()_Fibonacci()_FileCompare()_FileCompareContents()_FileNameByHandle()_FilePrefix/SRE()_FindInFile()_GetBackgroundColor()/_SetBackgroundColor()_GetConrolID()_GetCtrlClass()_GetDirectoryFormat()_GetDriveMediaType()_GetFilename()/_GetFilenameExt()_GetHardwareID()_GetIP()_GetIP_Country()_GetOSLanguage()_GetSavedSource()_GetStringSize()_GetSystemPaths()_GetURLImage()_GIFImage()_GoogleWeather()_GUICtrlCreateGroup()_GUICtrlListBox_CreateArray()_GUICtrlListView_CreateArray()_GUICtrlListView_SaveCSV()_GUICtrlListView_SaveHTML()_GUICtrlListView_SaveTxt()_GUICtrlListView_SaveXML()_GUICtrlMenu_Recent()_GUICtrlMenu_SetItemImage()_GUICtrlTreeView_CreateArray()_GUIDisable()_GUIImageList_SetIconFromHandle()_GUIRegisterMsg()_GUISetIcon()_Icon_Clear()/_Icon_Set()_IdleTime()_InetGet()_InetGetGUI()_InetGetProgress()_IPDetails()_IsFileOlder()_IsGUID()_IsHex()_IsPalindrome()_IsRegKey()_IsStringRegExp()_IsSystemDrive()_IsUPX()_IsValidType()_IsWebColor()_Language()_Log()_MicrosoftInternetConnectivity()_MSDNDataType()_PathFull/GetRelative/Split()_PathSplitEx()_PrintFromArray()_ProgressSetMarquee()_ReDim()_RockPaperScissors()/_RockPaperScissorsLizardSpock()_ScrollingCredits_SelfDelete()_SelfRename()_SelfUpdate()_SendTo()_ShellAll()_ShellFile()_ShellFolder()_SingletonHWID()_SingletonPID()_Startup()_StringCompact()_StringIsValid()_StringRegExpMetaCharacters()_StringReplaceWholeWord()_StringStripChars()_Temperature()_TrialPeriod()_UKToUSDate()/_USToUKDate()_WinAPI_Create_CTL_CODE()_WinAPI_CreateGUID()_WMIDateStringToDate()/_DateToWMIDateString()Au3 script parsingAutoIt SearchAutoIt3 PortableAutoIt3WrapperToPragmaAutoItWinGetTitle()/AutoItWinSetTitle()CodingDirToHTML5FileInstallrFileReadLastChars()GeoIP databaseGUI - Only Close ButtonGUI ExamplesGUICtrlDeleteImage()GUICtrlGetBkColor()GUICtrlGetStyle()GUIEventsGUIGetBkColor()Int_Parse() & Int_TryParse()IsISBN()LockFile()Mapping CtrlIDsOOP in AutoItParseHeadersToSciTE()PasswordValidPasteBinPosts Per DayPreExpandProtect GlobalsQueue()Resource UpdateResourcesExSciTE JumpSettings INISHELLHOOKShunting-YardSignature CreatorStack()Stopwatch()StringAddLF()/StringStripLF()StringEOLToCRLF()VSCROLLWM_COPYDATAMore Examples...

Updated: 04/09/2015

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#8 ·  Posted (edited)

The $cmdline is constant durring the script run...it's values are determined by what you pass in...such as your exampl:

sample.exe "123" "addinganother" "andanother"

 

 

If your compiled script is ONLY what i have pasted above, then you will be able to read the param "123" (as well as the other ones)...change it to a messagebox to see it:

; this is the ONLY code in sample.exe:

For $i = 1 To UBound($CmdLine) - 1
    msgbox(1,1,$CmdLine[$i])
Next
Edited by jdelaney
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After reading the help and other topics in this forum, I realize $CmdLine[x] is a constant and I can't pass in a variable to it through DOS command line. But how can I pass a variable into my autoit compiled .exe?

Yes you can, that is its only purpose.

 

Here's a very simple script to demonstrate it.

 

#include <Constants.au3>
If $Cmdline[0] > 0 Then
    For $I = 1 to $Cmdline[0]
        MsgBox($mb_systemmodal, "$Cmdline[" & $I & "] = ", $Cmdline[$I])
    Next
EndIf
Compile it, and send it some command line parameters.
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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
How to ask questions the smart way!

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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The cmdline array is for reading, not setting...show us how you are calling the script.

For $i = 1 To UBound($CmdLine) - 1
    ConsoleWrite($CmdLine[$i] & @CRLF)
Next

I agree with you after so many reading on help and discussion here. My question is how I can pass a variable into my autoit compiled .exe?

Due to the complexcity of my code, I am just using a similar sample code to brief my quesion.

I create a sample.au3 code:

1.Local $var
2.MsgBox(0, "", "The argument is " &  $var)

And then I compile it to .exe as sample.exe

Now, I like to run sample.exe in DOS command like this:

sample.exe "this is the variable I want o show and process"

Instead of poppng up  a message to show: this is the variable I want o show and process, I got the error message when I execute it in DOS command. But in the end, I like to call sample.exe in my C# code like this:

var proc = Process.Start("C:\\sample.exe "whatever variable I like to pass in" ");
proc.WaitForExit();

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try this:

var proc = Process.Start("C:sample.exe 'whatever variable I like to pass in'"); proc.WaitForExit();
 
note the ' vs "

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The $cmdline is constant durring the script run...it's values are determined by what you pass in...such as your exampl:

sample.exe "123" "addinganother" "andanother"

 

 

If your compiled script is ONLY what i have pasted above, then you will be able to read the param "123" (as well as the other ones)...change it to a messagebox to see it:

; this is the ONLY code in sample.exe:

For $i = 1 To UBound($CmdLine) - 1
    msgbox(1,1,$CmdLine[$i])
Next

 

 

Yes you can, that is its only purpose.

 

Here's a very simple script to demonstrate it.

 

#include <Constants.au3>
If $Cmdline[0] > 0 Then
    For $I = 1 to $Cmdline[0]
        MsgBox($mb_systemmodal, "$Cmdline[" & $I & "] = ", $Cmdline[$I])
    Next
EndIf
Compile it, and send it some command line parameters.

 

 

The above two inputs are working perfectly when I copy and paste to my .au3 code. I compiled it to .exe and ran it in DOS command, it did pop up the message displaying the parameters/arguements correctly!

Until now, reading the correct code and executing it in front of me, I start to understand what you guys talking about! Thank you guys so much for the demo.

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Sometimes all it takes is to see it in action to understand how it all works together.

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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
How to ask questions the smart way!

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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#14 ·  Posted (edited)

Before I lable it "resolved" on this topic, allow me the last question on C# part. I am alomost there.

Ok, I have the autoIT compiled sample.exe can accept multiple argument now. Then, I like to call this sample.exe in C# code.

public void tocall_Sample_with_args(string arg1, string arg2)
{
            var proc = Process.Start("C:\\sample.exe " + arg1 + " " + arg2);
            proc.WaitForExit();
 }

Build succeeded in C#. But I ran into error when I ran it. Looks like something wrong on the above piece of new code.

An unhandled exception of type 'System.ComponentModel.Win32Exception' occurred in System.dll

Additional information: The system cannot find the file specified

Can you please show me how to call autoIT compiled .exe with multiple arguments in C#?

Edited by llgg716

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#15 ·  Posted (edited)

do your args have spaces in them?  If so, you should wrap them:

...i'm not sure if you can escape??  Assumed the escape is (because of your file path escaping the )...so where you see ", it's actually including a " in the start()

var proc = Process.Start("C:sample.exe "" + arg1 + "" "" + arg2 + """);
 

Wish I knew more about C coding of any type, sorry :)

edit: answer 3: http://stackoverflow.com/questions/5168612/launch-program-with-parameters

edit2: this is an autoit forum :)

Edited by jdelaney
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thank you for the link, jdelaney. With your link and another google search: http://stackoverflow.com/questions/12091152/run-application-from-c-sharp-code-with-multiple-arguments

 

 

public void to_call_sample(string arg1, string arg2)
{
            startInfo.FileName = @"C:\\sample.exe";
            startInfo.Arguments = arg1 + " " + arg2;
            var proc = Process.Start(startInfo);
            proc.WaitForExit();
}

I have the C# code working fine to call my auoit compiled exe with multiple arguments.

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