Re: [Pyobjc-dev] NSDocument based app

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

On Wednesday, Nov 6, 2002, at 10:21 Europe/Amsterdam, Peter Montagner 
wrote:

>
> On Wednesday, November 6, 2002, at 07:28 PM, Ronald Oussoren wrote:
>
>>
>> On Wednesday, Nov 6, 2002, at 08:53 Europe/Amsterdam, Peter Montagner 
>> wrote:
>>
>>> The app works correctly in all the cases you mentioned. It will also 
>>> correctly open a new window when it is brought to the front by 
>>> clicking on the dock icon, if no other documents are open. Like I 
>>> said, everything else I've tried works.
>> The Todo application that is part of the source-tree has the same 
>> problem. That's not very helpfull, but at least this shows the 
>> problem is probably in PyObjC.
>
> Good to hear. No wait, that's bad. Any idea what's causing it?
Not yet...

>
>
>>> Except printing. How do selectors work? Specifically I need to call
>>>
>>> runModalPageLayoutWithPrintInfo:delegate:didRunSelector:contextInfo:
>>>
>>> How do I pass a selector to this? I actually want to send a NULL for 
>>> the selector (I have nothing to do when the sheet is closed). In 
>>> ObjC I'd do something like:
>>>
>>>     [self runModalPrintOperation:op
>>>                 delegate:nil
>>>                 didRunSelector:NULL
>>>                 contextInfo:NULL];
>> Selectors (type SEL in Objective-C) are represented as strings in 
>> Python:
>>
>> self.runModalPrintOperation_delagate_didRunSelector_contextInfo_(
>> 	op, nil, "mySelector:", None)
>
> For some unknown reason, that isn't working. It dies while executing
>
> - (void)runModalPrintOperation:(NSPrintOperation *)printOperation 
> delegate:(id)delegate didRunSelector:(SEL)didRunSelector 
> contextInfo:(void *)contextInfo

The last argument is problematic: void pointers currently require 
manual assistance. We can at least support automatic translation from 
None to a NULL pointer.

The error message is not very helpfull.

Ronald