Newbie -- conditionally setting Registry key

Archive: Newbie -- conditionally setting Registry key

aquarii
8th November 2001 16:01 UTC

Newbie -- conditionally setting Registry key
Newbie question here -- I want to make some Registry keys during my install, but if the keys already exist -- I don't want to overwrite the existing value. I've checked through the docs that come with the installer -- but I can't seem to find the right answer.

Lion King
8th November 2001 17:14 UTC

Re: Newbie -- conditionally setting Registry key
from bigtest.nsi example

ClearErrors
ReadRegStr $1 HKCR "software\microsoft" shit
IfErrors 0 NoError
  MessageBox MB_OK "could not read from HKCR\software\microsoft\shit"
  Goto ErrorYay
NoError:
  MessageBox MB_OK "read '$1' from HKCR\software\microsoft\shit"
ErrorYay:
SectionEnd

this should work:

Section "Registry check"
ClearErrors
ReadRegStr $1 HKCU "software\microsoft" shit
IfErrors 0 NoError
  WriteRegStr HKCU software\microsoft "shit" "0"
  Goto ErrorYay
NoError:
  MessageBox MB_OK "read '$1' from HKCU\software\microsoft\shit"
ErrorYay:
SectionEnd

without MessageBox:

Section "Registry check"
ClearErrors
ReadRegStr $1 HKCU "software\microsoft" shit
IfErrors 0 NoError
  WriteRegStr HKCU software\microsoft "shit" "0"
NoError:
  SectionEnd