I think you miss understood my reply. I'll try to clarify a little more.
In your code example you did...
app = QApplication.instance()
pumpThread.initializePumpThread()
app.setStyleSheet(setQtCSS())
*app* is in your *current *namespace. So if pumpThread hasn't been run
once *app *will be None (hence your error)
The pumpThread module may or may not be creating your main QApplication
(you'll have to check). I can't remember it off hand. But if it does,
then you need to initializePumpThread before you declare app.
Like this...
pumpThread.initializePumpThread()
*app *= QApplication.instance() # now app will not be None as pumpThread
will have started qApp
*app*.setStyleSheet(setQtCSS())
If pumpThread isn't making the qApp instance the code I linked to shows how
to do that.
see...
app = None
def get_app():
global app
return app
def set_app(i_app):
global app
testAppInstance = QtCore.QCoreApplication.instance()
if testAppInstance:
app = testAppInstance
else:
app = i_app
set_app(QtGui.QApplication(sys.argv))
On Tue, Jan 24, 2012 at 9:14 PM, Judah Baron <judah.ba...@gmail.com> wrote:
> Yeah, it looks like it's a timing thing. That block of code you have is a
> set of instructions that maya runs through pretty quickly, but you are
> getting into some quasi-asynchronous behavior with the atApp. Also, it's
> been a while since we have used pumpThread (we monitor QEvents instead
> because we weren't crazy about pumpThread - so yes, there is an
> alternative), but that line to initialize pumpThread - does it actually
> pump the thread at that point? Either way, I think you need a little time
> for the qtApp to start up.
>
> -Judah
>
>
> On Tue, Jan 24, 2012 at 8:49 AM, Panupat Chongstitwattana <
> panup...@gmail.com> wrote:
>
>> it's a pumpthread thing? Interesting . . . I suppose there's no real way
>> around it for 2010?
>>
>> About the database, I just ran into another issue. On Maya 2012, I can't
>> create QSqlDatabase object. I can import the module, get lists of drivers
>> and print it out.
>>
>> from PyQt4 import QtSql
>>
>> drivers = QtSql.QSqlDatabase.drivers()
>>
>> But as soon as I do this Maya immediately closes itself.
>>
>> myconnection = QtSql.QSqlDatabase()
>>
>>
>>
>>
>> On Tue, Jan 24, 2012 at 10:25 PM, David Moulder <da...@thirstydevil.co.uk
>> > wrote:
>>
>>> If your in 2010 then the qApp may not exist yet hence the NoneType Error.
>>>
>>> see
>>> http://www.mail-archive.com/python_inside_maya@googlegroups.com/msg01852.html
>>>
>>>
>>> Not used Qt's database drivers as we have our own dll that handles our
>>> server and file db connections.
>>>
>>> -Dave
>>>
>>> On Tue, Jan 24, 2012 at 11:09 AM, Panupat Chongstitwattana <
>>> panup...@gmail.com> wrote:
>>>
>>>> Hi everyone. I currently run into 2 problems when trying to start my
>>>> PyQt inside Maya 2010.
>>>>
>>>> 1. When I run the script, I sometimes get the error
>>>>
>>>> 'NoneType' object has no attribute 'setStyleSheet'
>>>>
>>>> When I re-run the same script again, the error goes away and the UI
>>>> shows up with the stylesheet applied . . .?
>>>>
>>>> app = QApplication.instance()
>>>> pumpThread.initializePumpThread()
>>>> app.setStyleSheet(setQtCSS())
>>>>
>>>>
>>>> 2. I can't get QSql database connection to work. My script can connect
>>>> just fine when I run them alone outside Maya 2010. But whenever I try to
>>>> run it inside Maya, the lastError() always return me "Driver not loaded"
>>>>
>>>>
>>>> --
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>>>>
>>>
>>>
>>>
>>> --
>>> David Moulder
>>> http://www.google.com/profiles/squish3d
>>>
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>>
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>
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