manual loop behavior on mac in wxPython 3.0.1 and 3.0.2. Dispatch() taking too long?

wxPython Users
1

Hi wxPy folks,

I’m building a fresh version of vpython-wx on a mac. FYI it uses a “manual” main loop so that it can do 3D rendering periodically.

The main part of the loop is given below. I see there is some mac specific code here. It’s mostly black magic to me unfortunately (at least at this point).

while not _evtloop.Pending() and _evtloop.ProcessIdle(): pass

if _wx.GetApp(): _wx.GetApp().ProcessPendingEvents()

if _isMac and not _evtloop.Dispatch(): return

Currently on wxOSX Pending always returns true, so the

ProcessIdle above is not ever called. Call it here instead.

if _isMac: _evtloop.ProcessIdle()

while True:

checkAgain = False

if _wx.GetApp() and _wx.GetApp().HasPendingEvents():

_wx.GetApp().ProcessPendingEvents()

checkAgain = True

if not _isMac and _evtloop.Pending():

_evtloop.Dispatch()

checkAgain = True

if not checkAgain:

break

Now, the trouble is that on wxPython 3.0.0 _evtloop.Dispatch() seems to return quickly even when “nothing” is happening, but on 3.02 and 3.0.1 it’s slow. It only returns quickly if I’m moving the mouse or pressing the keys on the keyboard. Strange! Any idea why that might be? The earlier behavior is highly preferred!

thanks,

-steve