From the QT 5 qapplication doc, for any gui app using QT, there is precisely one qapplication object, no matter whether the application has 0, 1, 2 or more Windows at any given time. Last time I looked, qapplication was a Singleton, iirc.
Just use multiple threads.
On Mon, Dec 28, 2015 at 9:45 PM, Orm Finnendahl
<orm.finnendahl@selma.hfmdk-frankfurt.de> wrote:
> Hi,
>
> I'm looking for a common lisp tool to open multiple gui windows on
> the fly from the repl for realtime musical applications, like synth
> modules or graphs for displaying waveforms with cursors moving above
> them.
>
> I haven't found any documentation on this, but my tests seem to
> indicate that a commonqt application blocks the repl and only one
> qtapplication can be run at a time.
>
> Is there an easy solution for this? I have used mcclim before and it
> was possible there as every application-frame has its own repl, but I
> fear mcclim doesn't have the same performance as qt.
>
> --
> Orm
>
--
With best regards, Stas.