得到一个“NotImplementedError"在 wxPython 中 [英] Getting a "NotImplementedError" in wxPython
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问题描述
每当我运行我的 wxpython 代码时，我都会收到这个错误.
I'm getting this error whenever I run my wxpython code.
Traceback (most recent call last):
File "musicplayer.py", line 203, in <module>
MyPanel(frame, -1)
File "musicplayer.py", line 17, in __init__
self.mc = wx.media.MediaCtrl(self, style=wx.SIMPLE_BORDER)
File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/media.py", line 96, in __init__
_media.MediaCtrl_swiginit(self,_media.new_MediaCtrl(*args, **kwargs))
NotImplementedError
我的程序是用 wxpython 创建一个音乐播放器.
My program is to create a music player in wxpython.
代码如下:
import wx
import wx.media
import os
from wx.lib.wordwrap import wordwrap
class MyPanel(wx.Panel):
def __init__(self, parent, id):
wx.Panel.__init__(self, parent, id)
self.SetBackgroundColour("white")
self.Center()
self.panel = wx.Panel(self, wx.ID_ANY)
#self.CreateStatusBar()
try:
self.mc = wx.media.MediaCtrl(self, style=wx.SIMPLE_BORDER)
except NotImplementedError:
self.Destroy()
raise
loadButton = wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-file.png'),pos=(10,2))
loadButton.Bind(wx.EVT_LEFT_DOWN, self.onLoadFile, loadButton)
# self.sb = self.CreateStatusBar()
playlistButton = wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-list.png'),pos=(80,2))
#playlistButton.Bind(wx.EVT_ENTER_WINDOW, self.OnWidgetEnter)
helpButton = wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-help.png'),pos=(150,10))
helpButton.Bind(wx.EVT_BUTTON, self.onHelp, helpButton)
#sb.SetStatusText("blabla")
playButton = wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-play.png'),pos=(50,140))
playButton.Bind(wx.EVT_LEFT_DOWN, self.onPlay, playButton)
pauseButton = wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-pause.png'),pos=(130,140))
pauseButton.Bind(wx.EVT_ENTER_WINDOW, self.onPause, pauseButton)
stopButton = wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-stop.png'),pos=(170,140))
stopButton.Bind(wx.EVT_LEFT_DOWN, self.onStop, stopButton)
volumeButton = wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-volume.png'),pos=(1200,140))
volumeButton.Bind(wx.EVT_LEFT_DOWN, self.mute, volumeButton)
nextButton=wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-next.png'),pos=(90,140))
nextButton.Bind(wx.EVT_LEFT_DOWN, self.playForward, nextButton)
previousButton=wx.BitmapButton(self, -1, wx.Bitmap('icons/stock_media-previous.png'),pos=(10,140))
previousButton.Bind(wx.EVT_LEFT_DOWN, self.playBack, previousButton)
# layout ...
hsizer = wx.BoxSizer(wx.HORIZONTAL)
# also creates a border space
vsizer = wx.BoxSizer(wx.VERTICAL)
vsizer.Add(hsizer, 2, wx.EXPAND|wx.ALL, border=-10)
vsizer.Add(self.mc,6, wx.EXPAND|wx.ALL, border=30)
self.SetSizer(vsizer)
#slider
self.slider = wx.Slider(self,-1,pos=(10,100),size = (1350,-1))
self.slider.Bind(wx.EVT_SLIDER,self.Seek)
self.info_pos = wx.StaticText(self,-1,pos=(1300,125),size=(450,-1))
sizer= wx.GridBagSizer(5,5)
sizer.Add(self.slider,(1,1),(1,4))
self.Show()
#volumeslider
currentVolume = 50
global slider1
slider1 = wx.Slider(self,pos=(1250,150),size = (100,-1))
slider1.SetRange(0, 100)
slider1.SetValue(currentVolume)
slider1.Bind(wx.EVT_SLIDER, self.setVol,slider1)
#Timer
self.timer = wx.Timer(self)
self.Bind(wx.EVT_TIMER, self.onTimer)
self.timer.Start(100)
start_image = wx.Image("Logo.gif")
start_image.Rescale(320, 300)
image = wx.BitmapFromImage(start_image)
mypic = wx.StaticBitmap(self, -1, image, pos=(550,300), style=wx.BITMAP_TYPE_PNG)
ext = ("~~~Title~~~")
self.file = wx.StaticText(self, -1, ext,size=(355,-1),pos=(600,175))
def onLoadFile(self, evt):
dlg = wx.FileDialog(self, message="Choose a media file",
defaultDir=os.getcwd(), defaultFile="",
style=wx.OPEN|wx.CHANGE_DIR )
if dlg.ShowModal() == wx.ID_OK:
path = dlg.GetPath()
self.doLoadFile(path)
dlg.Destroy()
def doLoadFile(self, path):
if not self.mc.Load(path):
wx.MessageBox("Unable to load %s: Unsupported format?" % path,
"ERROR", wx.ICON_ERROR | wx.OK)
else:
folder, filename = os.path.split(path)
self.file.SetLabel('%s' % filename)
self.GetSizer().Layout()
self.mc.Play()
def onPlay(self,event):
self.mc.Play()
self.slider.SetRange(0, self.mc.Length())
self.mc.SetLabel('length: %d seconds' % (self.mc.Length()/1000))
def onPause(self, evt):
self.mc.Pause()
self.sb.SetStatusText('Load file')
event.Skip()
def onStop(self, evt):
self.mc.Stop()
def Seek(self,event):
self.mc.Seek(self.slider.GetValue())
def onTimer(self,event):
current = self.mc.Tell()
self.info_pos.SetLabel(" %i seconds" % (int(current)/1000))
self.slider.SetValue(current)
def setVol(self, event):
currentVolume = slider1.GetValue()
print int(currentVolume)
self.mc.SetVolume(currentVolume)
def mute(self, event):
currentVolume=0
self.mc.SetVolume(currentVolume)
def playForward(self,event):
playbackrate=16
self.mc.SetPlaybackRate(playbackrate)
def playBack(self,event):
playbackrate=-4
self.mc.SetPlaybackRate(playbackrate)
def OnWidgetEnter(self,e):
name = e.GetEventObject().GetClassName()
sb.SetStatusText(name+'widget')
e.skip()
def onHelp(self, event):
info = wx.AboutDialogInfo()
info.Name = "Media 89 Help and Support"
info.Description = wordwrap(
"This is an example of a help description of how to "
"use this music player!"
"1.You can load your file "
"2.You can play music"
"3.Can check the playlist",
350, wx.ClientDC(self.panel))
info.WebSite = ("http://homes.soi.rp.edu.sg/101193/home.html", "Online Help")
info.play = ["media 89 group"]
info.do = wordwrap("created by media 89!", 500,
wx.ClientDC(self.panel))
wx.AboutBox(info)
app = wx.PySimpleApp()
style=wx.DEFAULT_FRAME_STYLE^wx.RESIZE_BORDER
frame = wx.Frame(None, -1, "Media 89",style=style,size = (1500,1800) )
MyPanel(frame, -1)
frame.Show(True)
app.MainLoop()
推荐答案
wxMediaCtrl 是构建的可选部分，如果 wxWidgets 的配置脚本无法找到正确的依赖库或它们的 -未安装开发包.当使用没有 wxMediaCtrl 的 wxWigets 构建 wxPython 时，它会创建一个存根类，如果您尝试使用它，它只会引发 NotImplementedError.
The wxMediaCtrl is an optional part of the build, and it will automatically be excluded if wxWidgets' configure script was not able to finde the right dependent libraries or their -devel packages are not installed. When wxPython is built using a wxWigets without wxMediaCtrl then it creates a stub class that simply raises NotImplementedError if you try to use it.
这篇关于得到一个“NotImplementedError"在 wxPython 中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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