python - wxPython: frame class loads several commands AFTER it is called -


i have function runs few intensive commands, made spinner class, simple window appears wx.gauge widget pulses during loading.

the problem that, when called in run, window doesn't appear until several seconds after initialized - self.triangulatepoints() finishes before window appears. indeed, if don't comment out load.end() (which closes window), spinner instance appear , disappear.

i assume has threading, , program continues run while spinner initiates. case? , if so, can pause progression of run() until spinner window appears?

it should noted running time.sleep(n) after calling spinner(...) not change when in program sequence appears on screen.

def run(self, event):      gis.points_packed = false     gis.triangulated = false      load = spinner(self, style=wx.default_frame_style & (~wx.close_box) & (~wx.maximize_box) ^ (wx.resize_border) & (~wx.minimize_box))     load.update('circle packing points...')      gis.boundary(infile=gis.loaded_boundary)      load.pulse()      self.getpoints(none, show=false)      load.update("triangulating nodes...")      self.triangulatepoints(none, show=true)      load.end()  ########################################################  class spinner(wx.frame):      def __init__(self, *args, **kwds):         super(spinner, self).__init__(*args, **kwds)          self.setsize((300,80))         self.settitle('loading')          process = "loading..."         self.font = wx.font(pointsize = 12, family = wx.default,                    style = wx.normal, weight = wx.bold,                    facename = 'arial')          self.process_txt = wx.statictext(self, -1, process)         self.process_txt.setfont(self.font)          self.progress = wx.gauge(self, id=-1, range=100, pos=(10,30), size=(280,15), name="loading")                 self.update(process)          self.centre()         self.show(true)      def end(self):         self.close(true)      def update(self,txt):          dc = wx.screendc()         dc.setfont(self.font)          tsize = dc.gettextextent(txt)         self.process_txt.setposition((300/2-tsize[0]/2,10))          self.process_txt.setlabel(txt)         self.progress.pulse()      def pulse(self):         self.progress.pulse()

there doesn't seem threads in code show, it's not clear why think has threading. quite contrary, in fact: afaics due not using threads. should run long running ("intensive") code in worker thread, things work , display correctly in ui.

you can't block main, ui thread non-trivial amount of time , still expect ui update correctly.


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