I'm somehow new to this PA and NSIS world and sadly my English isn't so good to searching and questioning well . hope you understand my question correctly
I want to have a "conditional section" in my PortableApp launcher .
3 sections required :
--section a (that's my question)
--section b (integrating avisynth or whatever apps to localsystem)
--section c (integrate and run main program that "needs" avisynth (or whatever apps)integrated to the local system first)
(that's my question again)
so "section a" should check availability of a file on the local system . e.g. check file "$SYSDIR\avisynth.dll"
if that file already exists , then ignore "section b" and launch "section c" .
if that file does NOT exists , then first launch "section b" and after that launch "section c"
thanks for your time and answers!