akumaaijou
16th July 2003 07:37 UTC

please help
i am very new to nsis and installers at all. and all i can say: nsis is great!

but i have a little problem
i want to check if jre is installed on the computer and my code looks like this:

;Installer Sections

  Section "JRE 1.4.1 (required)" SecJRE

                ClearErrors
                ReadRegStr $1 HKLM "SOFTWARE\JavaSoft\Java Runtime Enviroment" "CurrentVersion"
                IfErrors install keep

                keep:
                   MessageBox MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON1 "JRE detected. Keep installed version?" IDYES skip IDNO install

                install:
                   SectionIn 1 2 3 4 5
                   SetOutPath $INSTDIR\jre
                   File /r \\lnzp103a\projekte\temppo\tools\j2sdk1.4.1\jre\*.*
                   StrCpy $0 '-Dsun.java2d.noddraw -Djava.util.logging.config.file=logging.properties'
                   ;Uninstaller
                   WriteUninstaller uninst-temppo.exe

                skip:
  SectionEnd

i can compile the script without any problems, but it doesn't show the message box even though i have jre on my computer
does anybody know why?
thank you!

akumaaijou
16th July 2003 09:03 UTC

sorry... i typed something wrong...
problem is solved, nsis is great :D

akumaaijou
16th July 2003 14:24 UTC

hm?!
sorry to bother you again, but i have a problem.
i've jre installed on my computer (yes - i'm sure about that ;) ) but

ReadRegStr $1 HKLM "SOFTWARE\JavaSoft\Java Runtime Enviroment" "CurrentVersion"
MessageBox MB_OK "$1"

returns an empty string.... *wonder*

kichik
16th July 2003 15:24 UTC

I don't have this key in my registry and I have JRE installed. Use regedit to make sure you're trying to read the right key.

Afrow UK
16th July 2003 16:44 UTC

It's Environment not Enviroment

-Stu :)

akumaaijou
17th July 2003 07:11 UTC

ooooops
now that is embarassing. i made the same mistake twice. soo sorry to bother you.