Hi,

I’m kind of hoping that a Tkinter or Tk expert is reading this…

A PyObjC user tries to call Tkinter from a Cocoa program (that is, the Cocoa 
runloop starts before the Tkinter one) and gets an error message:

    -[NSApplication _setup:]: unrecognized selector sent to instance

Furthermore the Tkinter GUI doesn’t work. PyObjC’s issue about this: 

    
https://bitbucket.org/ronaldoussoren/pyobjc/issues/201/tkinter-method-tk-failed-with-error

I’ve done some quick browsing of the Tk source code and it appears that Tk 
assumes that -[NSApplication sharedApplication] returns an instance of a 
Tk-specific private subclass of NSApplication and that won’t be true when the 
Tk runloop is started before the Cocoa one.

My question: is my analysis correct? And has anyone successfully mixed PyObjC 
and Tkinter in this way? I guess this issue could be avoided by initialising Tk 
before calling into Cocoa.

Ronald
_______________________________________________
Pythonmac-SIG maillist  -  Pythonmac-SIG@python.org
https://mail.python.org/mailman/listinfo/pythonmac-sig
unsubscribe: https://mail.python.org/mailman/options/Pythonmac-SIG

Reply via email to