List Running apps and windows

FROM : Jere Gmail
DATE : Sun May 04 00:52:41 2008

I want to list all the running apps and their windows.
Running apps is easy with [ws launchedApplications] but I cant find a
way for listing their windows.
I have tried NSWindowList(win_count,arr_win)  but then
[[NSApplication sharedApplication] windowWithWindowNumber:arr_win[i]]
in a bucle will give me no info on windows from other apps.
Can anyone help? Thanks

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