Question

Pastebin link: http://pastebin.com/f40ae1bcf

The problem: I made a wx.Gauge, with the range of 50. Then a function that updates Gauge’s value when the program is idle. When the gauge is filled by around 50% it empties and doesn’t show anything for a while. The value is actually 50 when it does this, and I think that when the value is 50 it should be full.

Why does it do this? I also tried with a wx.Timer instead of binding to wx.EVT_IDLE but I didn’t have luck.

Answer 1

A few things.

• I can’t reproduce this on my iMac, it goes all the way to full. Python 2.5.4, wxPython 2.8.9.2
• Idle events can come at strange times. Try adding print event to your idle handler to see exactly when those events are coming. A timer would be best. Is the gauge moving really fast or flickering?
• You can try calling gauge.Update() to force a complete redraw too.
• I always just use 100 as my gauge limit, maybe just try that.

An easier way than a timer could be:

import wx

class GaugeFrame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, -1, "Gauge example",
                          size=(350, 150))
        panel = wx.Panel(self, -1)
        self.count = 0
        self.gauge = wx.Gauge(panel, -1, 50, (20, 50), (250, 25))
        self.update_gauge()

    def update_gauge(self):
        self.count = self.count + 1
        if self.count >= 50:
            self.count = 0
        self.gauge.SetValue(self.count)
        wx.CallLater(100, self.update_gauge)

app = wx.PySimpleApp()
GaugeFrame().Show()
app.MainLoop()