Ahh, that did it. Awesome, thanks. These occasional "add a decorator to
avoid random crash" problems are very confusing... guess I'll figure it
all out as I go along.
dan
Gary Bernhardt wrote:
You need to wrap you alertEnded... method with
PyObjcTools.Apphelper.endSheetMethod:
@PyObjcTools.Apphelper.endSheetMethod
def alertEnded(self, alert, choice, context):
...
(Methods wrapped with endSheetMethod don't need the ObjC name
mangling, so you can name it whatever you want.)
I have a very weak understanding of why this is needed, but it's
something related to sheet callback methods not having a fixed
signature.
On Wed, Jul 23, 2008 at 11:57 AM, Daniel Ashbrook <[EMAIL PROTECTED]> wrote:
I'm working my way through the excellent book "Cocoa Programming for Mac OS
X", but using PyObjC instead of ObjC. For the most part it's working very
well - a testament to the awesomeness of PyObjC!
However, I'm occasionally getting a crash from my application that gives no
errors - it just enters into the debugger with no other output. A backtrace
leads through C code to (inevitably) objc_msgSend(), which doesn't help
much.
In one case I managed to figure out that I needed to add myFunc_ =
objc.accessor(myFunc_) after the definition of myFunc_() (though I have no
clue why), but in the current case that doesn't help. The relevant chunk of
code is below. My debug log shows the "Ending alert sheet" message, but not
the "Alert ended" message.
@IBAction
def removeEmployee_(self, sender):
selectedPeople = self._employeeController.selectedObjects()
alert =
NSAlert.alertWithMessageText_defaultButton_alternateButton_otherButton_informativeTextWithFormat_(u'Delete?',
u'Delete', u'Cancel', None, u'Do you really want to delete %d people?' %
len(selectedPeople))
NSLog(u'Starting alert sheet')
alert.beginSheetModalForWindow_modalDelegate_didEndSelector_contextInfo_(self._tableView.window(),
self, 'alertEnded:code:context:', None)
NSLog(u'Ending alert sheet')
def alertEnded_code_context_(self, alert, choice, context):
NSLog(u'Alert ended')
if choice == NSAlertDefaultReturn:
self._employeeController.remove(None)
Thanks in advance for any hints, whether general or specific!
Daniel Ashbrook
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