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.
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 @@
from types import *
from Carbon import AE
+from Carbon import Evt
from Carbon import AppleEvents
import MacOS
import sys
@@ -144,6 +145,16 @@
_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 @@
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)