How to I launch an on-screen keyboard from my application on Mac OSX?

Question

I know there is an on-screen keyboard which you can access on Mac OSX, however I need to add a toolbar button to launch it from within my application.

Does anybody know how I can do this?

Answer 1

You can launch KeyboardViewerServer.app in whatever way your language does that (you do not say which)

From Terminal:

open -a KeyboardViewerServer

I found it in /System/Library/Components/KeyboardViewer.component/Contents/SharedSupport/KeyboardViewerServer.app

If you have problems with it on Leopard, see also

http://discussions.apple.com/thread.jspa?threadID=1257002&tstart=50