Apparently, I can't find any help on this. I have a scenario where I want to check if the user has a certain version of the .NET Framework installed on his or her machine. If not, I want to display a mandetory section inside a section-group that let's the user know that a particular version of the .NET Framework is a prerequisite and it will be installed prior to installing the application. How can I go about doing something like this?
Thanks!
Outfile "test.exe"
Requestexecutionlevel user
!include Sections.nsh
!include LogicLib.nsh
Page Components MyCompPreCallback
Page Instfiles
SectionGroup /e Foo
Section ".NET Framework vX.Y" SEC_DOTNET
SectionIn RO
;File ...
SectionEnd
SectionGroupEnd
Function MyCompPreCallback
StrCpy $0 1 ;TODO: Check if .net is installed and put result in $0
${If} $0 <> 0
!insertmacro UnselectSection ${SEC_DOTNET}
${EndIf}
FunctionEnd
You can find information about finding the installed version of .NET on this blog and by searching the nsis wiki