From 397e9142096d5ccd2b4a63bc04d3b05b3c86cc48 Mon Sep 17 00:00:00 2001 From: Jack Jansen Date: Mon, 31 Mar 2003 13:29:32 +0000 Subject: In TalkTo.send(), check that we have access to the window manager, and initialize the event loop (if not done previously) to work around a bug (IMHO) in MacOSX 10.2. --- Lib/plat-mac/aetools.py | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/Lib/plat-mac/aetools.py b/Lib/plat-mac/aetools.py index 0639541..9111d50 100644 --- a/Lib/plat-mac/aetools.py +++ b/Lib/plat-mac/aetools.py @@ -23,6 +23,7 @@ files: the pack stuff from aepack, the objects from aetypes. from types import * from Carbon import AE +from Carbon import Evt from Carbon import AppleEvents import MacOS import sys @@ -144,6 +145,16 @@ class TalkTo: _signature = None # Can be overridden by subclasses _moduleName = None # Can be overridden by subclasses + __eventloop_initialized = 0 + def __ensure_WMAvailable(klass): + if klass.__eventloop_initialized: return 1 + if not MacOS.WMAvailable(): return 0 + # Workaround for a but in MacOSX 10.2: we must have an event + # loop before we can call AESend. + Evt.WaitNextEvent(0,0) + return 1 + __ensure_WMAvailable = classmethod(__ensure_WMAvailable) + def __init__(self, signature=None, start=0, timeout=0): """Create a communication channel with a particular application. @@ -201,7 +212,8 @@ class TalkTo: def sendevent(self, event): """Send a pre-created appleevent, await the reply and unpack it""" - + if not self.__ensure_WMAvailable(): + raise RuntimeError, "No window manager access, cannot send AppleEvent" reply = event.AESend(self.send_flags, self.send_priority, self.send_timeout) parameters, attributes = unpackevent(reply, self._moduleName) -- cgit v0.12