I just rebuilt from CVS head, and the example you provide below worked fine 
with Python. I think people will find this very useful!

Rendering speed on "Trapped" is back to what it was before also -- did 
something change?

Regards,
Mike

----- Original Message ----- 
From: "Istvan Varga" 
To: 
Sent: Monday, December 12, 2005 12:29 PM
Subject: Re: [Cs-dev] Java Wrapper Now Working


> On Sunday 11 December 2005 23:47, Victor Lazzarini wrote:
>
>> I presume in Python the idea will be more or less the
>> same (deriving a class and overriding its methods).
>
> Yes, here is an example:
>
> #!/usr/bin/python
>
> import sys
> from Tkinter import *
> from ScrolledText import ScrolledText
> import csnd
> import threading
>
> cs = csnd.Csound()
>
> w = ScrolledText(width=80, height=24, foreground='white', 
> background='black')
> w.pack()
> w.tag_config('warningTag', foreground='white')
> w.tag_config('warningTag', foreground='white', background='blue')
> w.tag_config('errorTag', foreground='white', background='red')
> w.tag_config('redTag', foreground='red')
> w.tag_config('greenTag', foreground='green')
> w.tag_config('blueTag', foreground='cyan')
> w.tag_config('yellowTag', foreground='yellow')
>
> def guiThread():
>    w.mainloop()
>
> # create and start a GUI thread
>
> th = threading.Thread(None, guiThread)
> th.start()
>
> # pyCallbacks is a subclass of CsoundCallbackWrapper that can
> # override the methods MessageCallback(), InputValueCallback(),
> # OutputValueCallback(), and YieldCallback() for defining callbacks
>
> class pyCallbacks(csnd.CsoundCallbackWrapper):
>    def MessageCallback(self, attr, msg):
>        s = self.CharPtrToString(msg)
>        if (attr & csnd.CSOUNDMSG_TYPE_MASK) == csnd.CSOUNDMSG_WARNING:
>            w.insert(END, s, 'warningTag')
>        elif (attr & csnd.CSOUNDMSG_TYPE_MASK) == csnd.CSOUNDMSG_ERROR:
>            w.insert(END, s, 'errorTag')
>        elif (attr & csnd.CSOUNDMSG_FG_COLOR_MASK) == 
> csnd.CSOUNDMSG_FG_RED:
>            w.insert(END, s, 'redTag')
>        elif (attr & csnd.CSOUNDMSG_FG_COLOR_MASK) == 
> csnd.CSOUNDMSG_FG_YELLOW:
>            w.insert(END, s, 'yellowTag')
>        elif (attr & csnd.CSOUNDMSG_FG_COLOR_MASK) == 
> csnd.CSOUNDMSG_FG_GREEN:
>            w.insert(END, s, 'greenTag')
>        elif (attr & csnd.CSOUNDMSG_FG_COLOR_MASK) == 
> csnd.CSOUNDMSG_FG_BLUE:
>            w.insert(END, s, 'blueTag')
>        else:
>            w.insert(END, s, 'miscTag')
>        w.see(END)
> #   def YieldCallback(self):
> #       self.MessageCallback(0, ' ======== Yield called ! ========\n')
> #       return 1
>
> # create a callback wrapper object for this instance of Csound
> # note that this will use the host data pointer of 'cs', so the
> # host data cannot be used for other purposes
>
> cb = pyCallbacks(cs)
>
> # enable the callbacks for which there are definitions above
>
> #cb.SetYieldCallback()
> cb.SetMessageCallback()
>
> # build an argument list from the command line options
>
> args = csnd.CsoundArgVList()
> args.Append('csound')
> n = sys.argv.__len__()
> if n > 1:
>    for i in range(1, n):
>        args.Append(sys.argv[i])
> args.Append('-H0')
> args.Append('-m231')
>
> # compile and perform an orchestra to see if the callbacks work
>
> if cs.Compile(args.argc(), args.argv()) == 0:
>    while cs.PerformKsmps() == 0:
>        pass
>
> # Reset() must be called before 'cs' or 'cb' is possibly
> # garbage collected, otherwise a crash may occur
>
> cs.Reset()
>
> # free memory used by the argument list; this is optional, and
> # would be done automatically when 'args' is garbage collected
>
> args.Clear()
>
> # wait for the GUI window to be closed
>
> th.join()
>
>
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