Help with acess to registry from observer

[honoluludesktop]

Sketchup.read_default fails to access the registry with the following code, and returns nil although I have verified that there is a value in v_name. Anyone care to discuss?

class AtelierModelObserver<Sketchup;;ModelObserver
  def onSaveModel(model) 
    result=Sketchup.read_default("label","v_name","default")
    if result==nil
      #undocumented PC only exit command.
      Sketchup.send_action 57602 
    end
  end
end

[thomthom]

result=Sketchup.read_default("label","v_name","default") This gives you nil?
You added the string "default" to the optional default value - which means it should return "default" if the value is not set.

How are you verifying that you have a value for v_name? What value is set in the registry? What ruby value type do you use to set the value?

[honoluludesktop]

In the first instance of Sketchup, the plugin writes to the register, and waits at a UI.messagebox midway. At this time, the second instance of sketchup, saves its model, calls the observer, to checks the register, but nil is returned. I use regedit to check the values in the register as I step through the program. In this case nil works for me, but I would like to know whats happening. Maybe one instance locks access to the register from the other? I am in the process of posting the plugin.

[honoluludesktop]

Plugin posted here.

[thomthom]

So what is the value you see in the register?
Does the register actually change as you use write_default ? Or is it delayed until SketchUp closes?

[honoluludesktop]

Regedit shows the write_default changes the register, but when read_default is placed in the observer, it returns nil.

[Dan Rathbun]

I believe I posted the 3rd argument bug for Sketchup.read_default() in the API topic. I have to check the beta bug list on this.

EDIT: YES.. I did report this bug ...

@dan rathbun said:

Any attempt to read a Registry DWORD value returns nil.
The 3rd argument is not returned on failure.

The bug was already listed in Google's buglist as number 2435419

[Dan Rathbun]

I bumped the bug report.

[honoluludesktop]

Good to know. In my case, I assumed that returning nil in that situation was a sign that the second instance of Sketchup was running. Guess I'll add or v_name==the_vari for when it gets fixed:-)

[Dan Rathbun]

There'a a major drawback to using the API "default" methods.
That is they did not give us a "remove_default" method.
This means the Win Registry or Mac plist can become cluttered with old 'orphaned' settings for plugins that are no longer used.

Many authors (TIG is one I think,) that instead write out their own settings file in the plugin subfolder. I think he has posted code snippets in other topic threads.

Basically you write out a string report of your settings Hash to a text file, using the inspect method.
To reload it, you read the file into a String object, and then eval() the string inside the context of your module, assigning it to a var, which should become type Hash after evaluation.