megan19
8th April 2006 21:29 UTC

if readINIStr then else?
Hi all,

I was wondering if someone could show me how to build this construction?

As in:

ReadINIStr $0 $INSTDIR\winamp.ini winamp outname == nothing?

Basically I want to use this method to verify an existance of an ini file. In MEL, it returns "" if there is no such file, keystring, etc. But not sure about NSIS, so that's why I wrote nothing.


Thanks!!!

empezar
9th April 2006 00:45 UTC

with LogicLib.nsh

ReadINIStr $0 "$INSTDIR\winamp.ini" winamp outname
${Unless} $0 == ""
  MessageBox MB_OK "Value: $0"
${EndUnless}

megan19
9th April 2006 02:11 UTC

empezar,

Thanks for replying. But I am not sure where to put the else statement?

${Unless} $0 == ""
THEN_STATEMENT...
${EndUnless}

Afrow UK
9th April 2006 10:16 UTC

Use IfFileExists.

-Stu

megan19
9th April 2006 19:31 UTC

Thanks alot Afrow.

IfFileExists $WINDIR\notepad.exe 0 +2
MessageBox MB_OK "notepad is installed"
else do_something??

Where do I place the else statement?


Thanks!!

dienjd
9th April 2006 19:55 UTC

Use the logic library to be able to use if-else-end logic.

!include LogicLib.nsh

${If} ${FileExists} $WINDIR\notepad.exe
  MessageBox MB_OK "notepad found"
${Else}
  MessageBox MB_OK "notepad not found"
${EndIf}

megan19
9th April 2006 22:59 UTC

Hi dienjd,

Thanks alot for replying. I really appreciate it!


Thanks all!!