tieum
3rd April 2009 15:53 UTC

Variable does not expand correctly in File
Hello,

I try the following code

Var MyVar
StrCpy MyVar "C:\Path\myfile.txt"

SetOutPath "$INSTDIR"
File "$MyVar"

When I try to compile my installer I get the error message:

File "$MyVar" -> no files found.

Why is this?

If I try
File "C:\Path\myfile.txt"
it works.

Thanks,

Tieum

Comperio
3rd April 2009 16:20 UTC

Variables are used at runtime. File is a compile-time command, so you can't use variables to define the file name.

You muse either use a 'real' name (File "C:\Path\myfile.txt") or you can use a symbol, like:
!define myFile "C:\path\mayfile.txt"
File ${myFile}

But, you can use variables to specify the output, such as:
File "/oname=$myFile" "C:\myfile.txt"

tieum
3rd April 2009 18:03 UTC

The problem is !define is not "variable." I have documentation in several languages and need to be able to change the path where the documentation is taken from depending on the language on the fly. How can I achieve that?

Update just did it with !define and !undef. Thanks for the help.

Comperio
3rd April 2009 18:36 UTC

I was just going to mention that if you wanted to control what gets installed, then here's a way that should work:

!include LogicLib.nsh
#...
Section 
${Switch} $LANGUAGE
  ${Case} ${LANG_ENGLISH}
    File "C:\English.txt"
    ${Break}
  ${Case} ${LANG_FRENCH}
    File "C:\French.txt"
    ${Break}
${EndSwitch}
SectionEnd

!ifdef UseEnglish
    ; code for adding English files
!endif