Hi,
I'm not familiar with WxPytho (yet).
But, the following code works on MacBook running MacOSX 10.4.8 with
Python2.5, wxPython2.7-osx-unicode-2.7.2.0-universal10.4-py2.5.dmg
and KEK version of CaPython314 ( I should have used the different name
to avoid confusion with FNAL version. Sorry).
######################################
import wx,ca
class MyApp(wx.PySimpleApp):
def OnInit(self):
frame = wx.Frame(None, -1, "Hello from wxPython")
frame.Show(True)
self.frame=frame
self.ch=ca.channel("fred")
self.ch.wait_conn()
self.ch.monitor(self.ca_callback)
self.ch.flush()
self.SetTopWindow(frame)
return True
def ca_callback(self,valstat):
self.ch.update_val(valstat)
self.frame.Title="%s:%f"%(self.ch.name,self.ch.val)
if __name__ == "__main__":
app = MyApp(0)
app.MainLoop()
#############################################
I hope this can give some idea.
Regards,
Noboru Yamamoto
EPICS group/J-PARC control group
KEK, JAPAN
Zhong Ren wrote:
> I managed to isolate a core dump in a minimized Python code
> (see below). I found two components are essential to cause a
> core dump: wx.Timer and ca.Monitor (or ca.Get). Can someone
> tell what the problem is?
>
> ###############################################
> import wx
> import ca
>
> def onTimer(event): pass
>
> ca.Monitor('S:SRcurrentAI')
>
> appli = wx.PySimpleApp()
> frame = wx.Frame(None)
> timer = wx.Timer()
> timer.Bind(wx.EVT_TIMER, onTimer)
> timer.Start(milliseconds = 10, oneShot = False)
> appli.MainLoop()
> ###############################################
>
> Other info:
> Pyhton 2.5
> wxPython 2.6.3.3
> RedHat Linux x86_64
> GCC 4.1.1
>
> To test, let the routine run for a while. A core dump will
> occur in a few minutes.
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