martijntijn
6th November 2007 15:52 UTC

StringCompare if not empty
I use the following script to check for installation of the .NET Framework:

StrCpy $2 0
  loop:
    EnumRegKey $1 HKLM Software $2
    StrCmp $1 "v2.0.50727" done
    IntOp $2 $2 + 1
    !StrCmp $1 "" loop
    MessageBox MB_OK "NoMsFramworkInstalled"
  done:

I want to loop trough my Registry is the key 'v2.0.50727' exists. Every key I compare with "v2.0.50727". When true go to 'done', when false reloop.

[Line 6] If $1 is not empty, reloop. What is the right syntax for this line? And will this code work?

Afrow UK
6th November 2007 18:09 UTC

StrCmp $1 "" 0 loop

Stu

kichik
6th November 2007 18:10 UTC

StrCmp $1 "" 0 loop

This would be much easier with the LogicLib:

!include LogicLib.nsh
#...
StrCpy $2 0
${Do}
        ClearErrors
        EnumRegKey $1 HKLM SOFTWARE\Microsoft\.NETFramework $2
        ${If} ${Errors}
                ${Break}
        ${EndIf}

        ${If} $1 == "v2.0.50727"
                MessageBox MB_OK found
                ${Break}
        ${EndIf}

        IntOp $2 $2 + 1
${LoopWhile} $1 != ""

Or even better:

http://nsis.sourceforge.net/Get_.NET_Version