[AG-TECH] GetData() problem in wxPython shared application

[Susanne Lefvert]

This works for me:

-----------------------
self.file = None

# Get current state
self.file = self.sharedAppClient.GetData("file")

if self.file:
    # do stuff
else:
    print "data does not exist..."
------------------------

Which platform?

Susanne


On Wed, 13 Apr 2005, Stephen Jeffrey wrote:

> Hi All,
>
> I am writing a shared application using wxPython. The application
> is to query if there is any shared data present when it starts.
> ie. if another copy of the application is already running and has
> sent some data using sharedAppClient.SetData(), when the second
> copy of the application starts it should obtain the data stored
> by the first copy.
>
> How can I query if there is any shared data already present?
> I have tried:
>
> d = self.sharedAppClient.GetData("data")
> if len(d) > 0:
>
> and other variations such as:
>
> d = self.sharedAppClient.GetData("data")
> if d != 0:
>
> and
>
> d = self.sharedAppClient.GetData("data")
> if d != None:
>
> but it appears as though GetData() is returning junk - when the
> first copy of the application starts there should not be
> any shared data present, but it returns non-zero data.
>
> Is there some way to overcome this, or do I have to somehow
> get the first instance of the application to "initialise"
> the shared data.
>
> cheers
> steve
>
> --
> Dr Stephen Jeffrey
> Advanced Computational Modelling Centre
> University of Queensland
> St. Lucia Queensland 4072 Australia
>
> Phone: +61 (7) 3365 6130
> Fax: +61 (7) 3365 6136
> Email: sjj at maths.uq.edu.au
> Web: http://www.acmc.uq.edu.au
>
>