InnoSetup tries to Create DefaultDir in any case

Question

I created an installer with innosetup to install an application that consists of two executables. Each of them should go to a separate folder. So I created a custom InputDirPage using the "CreateInputDirPage" function and added two entries to this page, one for each executable

To prevent the default DirPage from showing up I used these parameters in the [Setup} section:

DisableDirPage = yes AND AlwaysShowDirOnReadyPage= no

I wrote functions to extract the Folder paths from my custom DirPage and this works fine and evrything ends up where it is supposed to be.

BUT: During the installation process Innosetup tries to create the folder set in the DefaultDirName as this folder is the value in the invisible DirPage. If that folder does not exists and one would need administrator rights to create that folder, the setup will crash.

I worked around that problem by setting DefaultDirName = {pf} in the [Setup] section.
(As the program folder does always exist, I do not get any error messsage for failed creation attempts that way)

Now my questions are these:

1. Is there a setup parameter that tells Innosetup to completely ignore the content of the wizard dir page? Because making it invisble seems no to be sufficient.

2. Can I set that content or the {app} constant at runtime to avoid the "DefaultDirName" folder from being created?

Answer 1

Yes, there is an option called CreateAppDir.

[Setup]
CreateAppDir=No