RegShoe
21st January 2008 14:49 UTC

Silent install with error level
I'm trying to create a silent installer, which returns an errorlevel if there where any errors during the installation.

I've found some useful information in the manual and forums here, but I still have some questions.

I found that I can use "SetSilent" to prevent my script from asking for some user interaction. So if the installer is not able to overwrite a file, e.g. if the process is sill running, does this mean the file is skipped and the installer continues with the next file? And in this case, is there any error level set?
And if so, can I get this error level with "GetErrorLevel"? But how do I return this value when the script is finished?

I hope anyone can help.

Red Wine
21st January 2008 15:14 UTC

copied from NSIS manual,

The File command sets the error flag if overwrite mode is set to 'try' and the file could not be overwritten, or if the overwrite mode is set to 'on' and the file could not be overwritten and the user selects ignore.

.....
FileOpen $0 '$TEMP\setup.log' w
ClearErrors
File 'somefile.ext'
IfErrors 0 +2
FileWrite $0 'somefile.ext failed$\r$\n'
File 'someother.ext'
IfErrors 0 +2
FileWrite $0 'someother.ext failed$\r$\n'
.......
FileClose $0
.......
ClearErrors
FileOpen $0 '$TEMP\setup.log' r
loop:
FileRead $0 '$1'
IfErrors done
MessageBox MB_OK '$1'
goto loop
done:
FileClose $0
.....

RegShoe
22nd January 2008 08:55 UTC

Thanks for your reply.

I've tried this... but I still get no return value from my installer.

My installer code looks like this:

        SetOverwrite try
        SetAutoClose true
        SetSilent silent

        ClearErrors

        File /r "folder\*.*"
        IfErrors 0 +2
        SetErrorLevel 17   ; set to something other than -1 0 1 2

        GetErrorLevel $0

        IfErrors 0 +2
        MessageBox MB_OK '$0'

RegShoe
22nd January 2008 11:00 UTC

Hmmmm... I've tried to echo the error level as described here , and it works.

But I still wonder why this error level isn't displayed in my messagebox.

Red Wine
22nd January 2008 11:57 UTC

        SetOverwrite try
        SetAutoClose true
        SetSilent silent

        ClearErrors

        File /r "folder\*.*"
        IfErrors 0 +2
        SetErrorLevel 17   ; set to something other than -1 0 1 2

        GetErrorLevel $0

        StrCmp $0 "-1" +2
        MessageBox MB_OK '$0'

demiller9
22nd January 2008 14:51 UTC

@RegShoe

File /r "File /r "folder\*.*"
IfErrors 0 +2
SetErrorLevel 17 ; set to something other than -1 0 1 2

GetErrorLevel $0

IfErrors 0 +2
MessageBox MB_OK '$0'"