How to set the AppId of Windows Desktop Application (via InnoSetup)

Question

As per the title, how do I set the application id of a native Windows desktop application?

Documentation on Application Id's is sparse and I haven't found anything about setting it.

There is this Microsoft Docs but this mentions what it is and how to use AppUserModelId's

I am using Inno Setup Compiler to create an installer for my desktop application and I have set the flag AppId to a GUID generated by Inno Setup Compiler.

AppId={{6BE5E5E6-68BF-4AF7-A9E5-FF919709E86C}

My understanding is that Inno Setup will set up the AppId when you are running the installer, but when I run this PowerShell snippet, I am unable to find my application after installation (this snippet shows the AppId as IdentifyingNumber ):

get-wmiobject Win32_Product -Filter "Name LIKE 'MyApp%'"

Everything works as expected in my application though. It starts up and everything, but I need the AppId to be set in order for my toast notifications to work correctly (via wxWidgets).

Edit:

What I was actually after was AppUserModelId and not AppId which is what was even mentioned in my question here, ironically.

2nd Edit:

I've learnt that the AppId is a Inno Setup specific thing and not anything to do with Windows. As mentioned in my previous edit, what I was actually looking for is the AppUserModelId and my issue became more clear which has been put into this question .

I find it interesting regardless that some applications I can query with the Powershell snippet and I get results back, but for my application I get no result

Answer 1

According to the documentation for AppID it states:

AppId also determines the actual name of the Uninstall registry key, to which Inno Setup tacks on "_is1" at the end. (Therefore, if AppId is "MyProgram", the key will be named "MyProgram_is1".)

In your case the registry key will be: {6BE5E5E6-68BF-4AF7-A9E5-FF919709E86C}_is1

On my computer the uninstall registry keys are here:

   HKEY_LOCAL_MACHINE\
             SOFTWARE\
          WOW6432Node\
            Microsoft\
              Windows\
        CurrentVersion\Uninstall\{...}_is1

It has two registry keys stating the location of the software:

• InstallLocation
• Inno Setup: App Path

But it does not appear to state the name of the executable. But you would know that anyway.