henryt
25th May 2003 18:42 UTC

retrieve Winamp version in NSIS installer script
I use the great NSIS installer system to pack my plug-in. With the new 2.9x Winamp and some new API calls it cannot be used with older Winamp installations (<2.90). So I need to prevent the installation on older WA versions.

Question: Is there a way to retrieve the currently installed Winamp version with the NSIS installer?

I was searching the winamp.ini and the registry for an entry but without success. Any ideas?

Thanks!

Kaboon
25th May 2003 20:26 UTC

Moved this over to the NSIS forum.

kichik
25th May 2003 20:37 UTC

You can use GetDLLVersion to get the version of Winamp.exe and compare that to the minimum version that you need.

henryt
25th May 2003 22:47 UTC

Great, thank you!

It's a bit tricky to get a readable output but I found something in the NSIS forums.

Finally I used the following script:

  GetDLLVersion "$INSTDIR\winamp.exe" $R0 $R1
  IfErrors error 
   IntOp $R2 $R0 / 0x00010000 ; $R2 now contains major version 
   IntOp $R3 $R0 & 0x0000FFFF ; $R3 now contains minor version 
   IntOp $R4 $R1 / 0x00010000 ; $R4 now contains release 
   IntOp $R5 $R1 & 0x0000FFFF ; $R5 now contains build 
   StrCpy $0 "$R2.$R3.$R4.$R5" ; $0 now contains full version number 
   MessageBox MB_OK "Version: $0"
   Abort
  error:
  MessageBox MB_OK "There was an error"