Re: [Pyobjc-dev] Returning BOOLs to Cocoa

[Ronald O. <ous...@ci...>]

On Tuesday, 22 July, 2003, at 18:31, Bob Swerdlow wrote:

> I seem to be missing something about BOOLs returned from python members
> called for Cocoa delegates. :-(
>
> I implemented a Cocoa delegate for my window to support
> windowShouldClose_( ) since I need to do some checking of user input 
> before
> I allow the window to close.  However, no matter what I return, the 
> window
> always closes.
>
> Originally, I just used:
>     return 0
> but I also tried:
>     return objc.NO
>
> I added a print statement for when the code returns objc.NO and it 
> printed:
>     returning FALSE
>
> What is the proper value to return so that Cocoa knows I don't want it 
> to go
> on?

Returninging 0, False or objc.NO should work. Are you using PyObjC 
1.0b1? If you're using the 0.9 release, you have to tell the bridge 
that you intent implement a window delegate.

I added 'self.tableView.window().addDelegate_(self)' in 'awakeFromNib' 
and the following method to the TableView example and that works as 
expected.

   def windowShouldClose_(self, sender):
       """ Window won't close """
       print "Should Close?"
       return 0


Ronald