Change download location for Inno Setup TDownloadWizardPage

Question

I'm using Inno Setup's download system, but I would like to change the download folder from {tmp} to another one, can someone help me?

of:

DownloadPage.Add('{#LinkJava}', ExpandConstant('{tmp}\Java.exe'), '');

for:

DownloadPage.Add('{#LinkJava}', ExpandConstant('{src}{#PastaGeralDeApps}{#PastaDownPlugins}{#NomeExeJava}'), '');

I'm creating an automatic installer and I need to store the apps in a folder, to use offline.

Answer 1

You cannot change the folder, where the files are downloaded to using TDownloadWizardPage (note that the BaseName argument of TDownloadWizardPage.Add accepts a filename only, not a path).

But you can copy over the files to the final folder, once they are downloaded.

[Files]
Source: "{tmp}\downloaded-file.exe"; DestDir: "{app}"; flags: external

You of course need to download the files before the actual installation. So for example from NextButtonClick(wpReady), the way the official CodeDownloadFiles.iss example does.

---

If you need to move the files to the final location before the installation, use RenameFile or FileCopy functions. The copying is obviously slower, but more reliable, as you cannot move/rename between disks/filesystems. You might try moving, falling back to copying, if moving fails.

Answer 2

//function that performs the download - OK
function DownloadFiles(Url, Destination, FileName, Hash : String): Boolean;
begin
    DownloadPage.Clear;    
    DownloadPage.Add(Url, FileName, Hash);     
    DownloadPage.Show;
    try
      try
        DownloadPage.Download;
        Result := True;
      except
        if DownloadPage.AbortedByUser then
          Log('Aborted by user.')
        else
          SuppressibleMsgBox(AddPeriod(GetExceptionMessage), mbCriticalError, MB_OK, IDOK);
        Result := False;
      end;
    finally
      FileCopyLogged(ExpandConstant('{tmp}\'+FileName), ExpandConstant(Destination+'\'+FileName), False);      
    end;
    Result := True;     
end;