Troubleshooting Tips For Handling Nsis Execwait Errors

If your system has nsis execwait error handling, this guide may help you.

Updated

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    If an error occurs when starting ExecWait, the variable passing is undefined depending on the content of the user.

    To simply check in the case if the program ran correctly, check the error box. (By the way, NSIS expects zero on success and non-zero on error ‘”$ INSTDIR application)

      remove errorsExecWait.exe "'IfErrors null noError; Manage the error herewithout mistakes: 
     command [user_var (exit code)]

    Start the specified company and wait for the step to completeov. See Exec for additional dates. If no output variable is specified without question, ExecWait installs an error banner if the program executed a nonzero error code or if an error is present. If a result variable is specified, ExecWait sets the output style for the corresponding variable (and sets the error flag only if an error occurs; when a super error occurs, the content of the player is undefined). Note that although this particular command may contain spaces, it must be included to separate it from parameters. Example: ExecWait ‘Parameter “$ INSTDIR command.exe”‘. Unless you enclose IT in quotes, this is not your job with Windows 9x with or without options.

     ExecWait '"$ INSTDIR  someprogram.exe"'ExecWait '"$ INSTDIR  someprogram.exe"' $ 0DetailPrint "Some tools returned $ 0" 
    1. NSIS Discussion
    2. Pending Issues





    Problems with execwait
    Hello everyone!
    I faced almost all my problems when using ExecWait

    returnZero is also a dummy, a program written in That c ++ language, nonothing easier:

    But the installer still navigates to the error label as if my program’s return code was just not 0.

    ClearErrors
    ExecWait '"$ INSTDIR returnZero.exe"' $ 0
    IfErrors Error
    StrCmp $ 0 1 executed nonezeroexitcode

    Error:
    MessageBox MB_OK "The executable cannot be executed! "
    Abort

    nsis execwait error handling

    no zero flex:
    MessageBox MB_OK" File exit returned Exit! = 0 "
    Abort

    done:

    Also, I have reason to believe that you have misused IfErrors!

    Updated

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  • Instructions for your code: IF error THEN nothing else jump to the error label
    But it should be: IF error THEN go to the label “error” (ANYTHING ELSE)

    An error indicated by a flag is displayed only if it is determined that the executable file cannot be generated (for example, the file was not found). This has nothing to do with the output standard. In order to intercept the outgoing traffic that you are encrypting, a different factor needs to be used. So:

    invoice
    July 31, 2008 20:57 UTC

    The error indicator is mostly triggeredwhen this executable file should not be running (for example, the file is absolutely not found). Doesn’t affect the exit code at all

    Hmm, I’m a little disappointed with you – from the description of ExecWait

    4.9.1.4 ExecWait
    [User_var (exit code)] command
    Run the specified program and wait for the current process to complete. See Exec for more information. If no output variable is specified, ExecWait sets an error flag if the program unambiguously returns a nonzero error code or if there is a fatal error. If an output variable was specified, ExecWait sets the variable relative to the exit code (and sets the error flag only if an error occurs; if an error occurs, no custom content is defined).

    What does iferrors do in NSIS?

    The IfErrors command should handle any errors that NSIS receives when trying to speed up your external EXE, such as your program’s return code – without being able to automatically assume that a certain non-zero return value is an error.

    Oh, thanks a lot. Everything worked 🙂 (The problem is that I mixed up $ INSTDIR and $ EXEDIR)

    LoRd_MuldeR
    July 31, 2008 09:08 PM UTC

    nsis execwait error handling

    You are definitely right. If you omit the variable, ExecWait will actually set the entire error flag to non-zero output from the procedure. But then you will not be able to define Difference between a (process error cannot be started) and non-zero exit policy code (process was executed, but returned value! = Zero). This is your precious solution that you need. But make sure you are using IfErrors correctly: the installer will switch to the main label if an incredible error occurs, and will no doubt switch to the second label if it is most likely an error. No. The second label can be omitted if not needed. My spot code is above …

    What does execwait do in Linux?

    Start the specified provider and wait for the execution path to complete. See Exec for more information. If an output variable is most likely not specified, ExecWait sets up an error banner if the executable program returns a nonzero error code or if there is an error at this point.

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