Read DWORD from reg if exists
 

I use the following code to read a value(DWORD) from a key:

code:


;Check for Microsoft Internet Information Services

  StrCpy $2 0

  StrCpy $3 0

  findkey1:

    EnumRegKey $1 HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\Oc Manager" $2

    StrCmp $1 "Subcomponents" findvalue1

    IntOp $2 $2 + 1

    StrCmp $1 "" 0 findkey1

    goto nokey1

  findvalue1:

    MessageBox MB_OK "Finding Value $1 + $2 + $3"

    ReadRegDWORD $3 HKLM Software\Microsoft\Windows\CurrentVersion\Setup\OC Manager\Subcomponents iis_common

    MessageBox MB_OK "Value= $1 + $2 + $3"

    StrCmp $3 "" novalue1

    StrCmp $3 "" 0 done1

  nokey1:

    MessageBox MB_OK "NOKEY: $1"

    goto finish1

  novalue1:

    MessageBox MB_OK "NOVALUE: $3"

    goto finish1

  done1:

    MessageBox MB_OK "Internet Information Services is installed"

    goto finish1

  finish1:

But i always get the NOVALUE Messagebox. What i`m i doing wrong?

Rather than comparing $3 to "", call ClearErrors before ReadRegDWORD followed by IfErrors novalue1.
Make sure you put quotes around the registry path. I bet that script does not even build as you have a space in it.

Stu