Schultz
8th October 2001 09:36 UTC

Native OS Detection in NSIS
To some of those who might want this ablity in there NSIS scripts and have a compiler if you want OS Detection you can add this to util.c in the exehead project in the process_strings function i generally place this after the SYSDIR varibale.. but here it is

        else if (!strcmp_nstr2(&in,"SYSDIR"))
        {
          GetSystemDirectory(out,1024);
        }
        else if (!strcmp_nstr2(&in, "WINOS")) 
        {
                OSVERSIONINFO winfo;
                winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
                GetVersionEx(&winfo);
                if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
                {
                        lstrcpy(out,"WINNT");
                }
                else if(winfo.dwPlatformId==VER_PLATFORM_WIN32_WINDOWS)
                {
                        lstrcpy(out, "WIN9X");
                }
        }

this will just insert the strings WINNT or WIN9X into $WINOS variable and you can do a Simple StrCmp on it for your code.. hope people will like it.

pjw62
9th October 2001 19:38 UTC

or to save yourself some space in the exe header use


else if (!strcmp_nstr2(&in, "WINOS"))
{
if ((BOOL)(GetVersion() < 0x80000000))
{
lstrcpy(out,"WINNT");
}
else
{
lstrcpy(out, "WIN9X");
}
}