Autodesk points out a nice way to delegate the PyQt4 event loop to a
thread. This has the advantage that you don't call app.exec_(), and
thus maya remains responsive while your Qt app is running.
Here's a python module (slightly adapted from Autodesk's included
pumpThread.py) that sets up the event processing:
<pre># MayaQt.py
import maya.cmds as cmds
import maya.utils as utils
import threading
import time
import sys
from PyQt4 import QtCore, QtGui
_thread = None
app = None
def process_qt_events():
global app
def processor():
app.processEvents()
while True:
time.sleep(0.01)
utils.executeDeferred( processor )
def initialize():
global _thread
global app
if _thread == None:
app = QtGui.QApplication(sys.argv)
_thread = threading.Thread( target = process_qt_events, args =
() )
_thread.start()
</pre>
And here's a simple "Hello World" example:
<pre>from PyQt4 import QtGui
import MayaQt
# this step is required to initialize the global QApplication and
start the event loop
# you can access the QApplication as MayaQt.app
# it's important that you do NOT create your own QApplication instance
-- doing so will crash Maya
MayaQt.initialize()
s = QtGui.QLabel("Hello World")
s.show()
</pre>
--
http://groups.google.com/group/python_inside_maya
