Re: [Pyobjc-dev] applicationShouldOpenUntitledFile_

[<bb...@ma...>]

On Sunday, Feb 2, 2003, at 12:26 US/Eastern, Etienne Posthumus wrote:
> On Sunday, Feb 2, 2003, at 08:22 Europe/Amsterdam, Mitch Chapman wrote:
>> On Saturday, February 1, 2003, at 11:00 PM, bb...@ma... wrote:
>>> Very easy fix and not at all obvious.  The problem is that there is 
>>> no way for the bridge to know that your implementation of the method 
>>> should return BOOL.  So, you either have to tell the bridge that 
>>> your method returns a BOOL through the use of the objc.selector() 
>>> function or, better yet, declare that your class implements the 
>>> informal NSApplication delegate protocol.
>
>> Hm... I think the project template already did this for me.
>> (BTW thanks for including the project templates -- way cool.)
>> Here's the relevant code, showing the class declaration provided by
>> the template:
>
>> The log message is showing up in the PB Run window, right about the
>> time the unwanted Untitled document appears.
>
> In trying to make a delegate for a window responding to 
> windowShouldClose, I can also not get it to NOT close the window even 
> if I have only one statement in the method:
>     return NO
>
> Could this be related to the above behaviour?

Very likely.   The problem is that there is no way for the bridge to 
know that your method should return a BOOL unless you use 
objc.selector() or declare your object to be an NSWindowDelegate.

I was just looking into this and there appears to be a bug that was 
introduced sometime recently.   The following code used to work, now it 
doesn't.  I'm not sure why:

# create ObjC classes as defined in MainMenu.nib
NibClassBuilder.extractClasses("MainMenu")
class MyAppDelegate(AutoBaseClass, NSApplicationDelegate):
     def applicationShouldOpenUntitledFile_(self, sender):
         # return NO if you don't want untitled document to be opened on 
app launch
         return NO