sunlight112
12th October 2006 08:47 UTC

Need your help in NSIS
Hi,
I am still not to understand clearly about NullSoft. When I read help file. I can not see why +2 or +3 except (+1 or +0) :(
I also find information about it but I still can not.
StrCmp $0 "a string" 0 +3
DetailPrint '$$0 == "a string"'
Goto +2
DetailPrint '$$0 != "a string"'
Someone can help me???
I am still find more library about NSIS but I do not see them :(
If you have some document, please share it to me! :)
Big thank you for your gift, :D

saschagottfried
12th October 2006 11:02 UTC

What is your problem? I don't clearly understand you. Do you need more information about jumping to labels or what? What is wrong with +1, +0, +2, +3.

If you need advice in conditional logic, have a look at LogicLib.nsh and the examples in the NSIS/Examples directory - LogicLib.nsi. It is more clear to beginners.

{_trueparuex^}
12th October 2006 11:19 UTC

You mean relative jupms? :confused: It's all in the NSIS Manual (4.4 Relative Jumps) read also (4.3 Labels) I personally like to use labels instead of relative jumps, but it's not always possible.

Basically the +integer or -integer tells the program to jump on instruction relative to the place they are called from.

StrCmp $0 "a string" 0 +3 ; if register $0 == "a string" jump to 0 (continue normally) 
else jump to the third instruction from this point (skip the DetailPrint and Goto below).

DetailPrint '$$0 == "a string"' ; if the jump was 0 the code will continue normally here.

Goto +2 ; jump to second instruction from this point (skip the DetailPrint)

DetailPrint '$$0 != "a string"' ; if the jump was +3 the code will continue from this point

sunlight112
12th October 2006 11:24 UTC

Thanks,
My problem is not to understand clearly many command on NSIS. Sometimes, I read on help file, I can not find it out.
I want to find another example which it is more clearly to study it.
So, I want to ask everybody to have more documents.
Once again, thank you

saschagottfried
12th October 2006 14:13 UTC

search for files with nsi extension in your NSIS installation directories and you will find tons of examples. They are grouped to a certain topic or subject. If you read just some of them you will understand a lot.

Nobody can help you understanding NSIS, unless you have some experience. Compile examples, see what they are doing and look in the code.

Good luck!