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我正在尝试打印到 wxpython 中的特定选项卡式面板，但我下面的代码似乎只是打印到第三个（运行作业）选项卡面板窗口，我不知道为什么。我想打印第二个（QueueList）TAB 面板。

import wx
import sys
global queueList
queueList = []

class ScrolledWindow(wx.Frame):
    def __init__(self, parent, id, title):
        #global panel1
        wx.Frame.__init__(self, parent, id, title, size=(800, 700))
        self.tabbed = wx.Notebook(self, -1, style=(wx.NB_TOP))
        self.panel1 = wx.Panel(self.tabbed, -1)
        self.panel2 = wx.Panel(self.tabbed, -1)
        self.panel3 = wx.Panel(self.tabbed, -1)
        self.tabbed.AddPage(self.panel1, "Submit Job")
        self.tabbed.AddPage(self.panel2, "Queue")
        self.tabbed.AddPage(self.panel3, "Running Jobs")
        self.CreateStatusBar()
        menuBar = wx.MenuBar()
        menu = wx.Menu()
        self.SetMenuBar(menuBar)
        self.Centre()
        self.submit(self)
        self.queue(self)
        self.running(self)

    def submit(self, event):
        self.Show()
        dt1 = MyFileDropTarget(self)
        self.tc_files = wx.TextCtrl(self.panel1, wx.ID_ANY, pos=(42, 120), size=(500, 25))
        self.tc_files.SetDropTarget(dt1)
        self.buttonGo = wx.Button(self.panel1, -1, "Submit", pos=(90,530))
        self.buttonGo.Bind(wx.EVT_BUTTON, self.submit1)
        self.buttonClose = wx.Button(self.panel1, -1, "Quit", pos=(195,530))
        self.buttonClose.Bind(wx.EVT_BUTTON, self.OnClose)
        outputtxt3 = '''Drag & Drop Folder of Packages to Verify'''
        wx.StaticText(self.panel1, -1, outputtxt3, (33, 64), style=wx.ALIGN_CENTRE)

    def notify(self, indir):
        """Update file in testcontrol after drag and drop"""
        self.tc_files.SetValue(indir[0])
        global indirTemp
        indirTemp = indir

    def submit1(self, edit):
        list1 = '\n'.join(indirTemp)
        queueList.append(list1)
        print queueList
        wx.MessageBox('Job Submitted')

    def queue(self, event):
        self.Show()
        self.buttonClose2 = wx.Button(self.panel2, -1, "Quit", pos=(195,170))
        self.buttonClose2.Bind(wx.EVT_BUTTON, self.OnClose)
        global log2
        log2 = wx.TextCtrl(self.panel2, -1, pos=(35, 210), size=(720,400),
                              style = wx.TE_MULTILINE|wx.TE_READONLY|wx.HSCROLL)
        self.redir2=RedirectText(log2)
        sys.stdout=self.redir2

    def showQueue(self, edit):
        global queueList
        print queueList

    def running(self, event):
        self.Show()
        self.buttonClose3 = wx.Button(self.panel3, -1, "Quit", pos=(195,170))
        self.buttonClose3.Bind(wx.EVT_BUTTON, self.OnClose)

        global log3
        log3 = wx.TextCtrl(self.panel3, -1, pos=(35, 210), size=(720,400),
                              style = wx.TE_MULTILINE|wx.TE_READONLY|wx.HSCROLL)
        self.redir3=RedirectText(log3)
        sys.stdout=self.redir3

    def go3(self, edit):
        print "do something"

    def OnClose(self, e):
        self.Close(True)

class MyFileDropTarget(wx.FileDropTarget):
    """"""
    def __init__(self, window):
        wx.FileDropTarget.__init__(self)
        self.window = window

    def OnDropFiles(self, x, y, filenames):
        self.window.notify(filenames)

class RedirectText:
    def __init__(self,aWxTextCtrl):
        self.out=aWxTextCtrl

    def write(self,string):
        self.out.WriteText(string)

app = wx.App()
ScrolledWindow(None, -1, 'Application')
app.MainLoop()
4

2 回答 2

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原因是您在调用inrunning()之后调用，这是在进行打印之前重定向 stdout 的最后一件事。queue()__init__()

这是您的代码的一个版本，当您运行它时，它会通过输出它正在做什么的跟踪来使这一点变得明显......

import wx
import sys
global queueList
queueList = []

class ScrolledWindow(wx.Frame):
    def __init__(self, parent, id, title):
        #global panel1
        wx.Frame.__init__(self, parent, id, title, size=(800, 700))
        self.tabbed = wx.Notebook(self, -1, style=(wx.NB_TOP))
        self.panel1 = wx.Panel(self.tabbed, -1)
        self.panel2 = wx.Panel(self.tabbed, -1)
        self.panel3 = wx.Panel(self.tabbed, -1)
        self.tabbed.AddPage(self.panel1, "Submit Job")
        self.tabbed.AddPage(self.panel2, "Queue")
        self.tabbed.AddPage(self.panel3, "Running Jobs")
        self.CreateStatusBar()
        menuBar = wx.MenuBar()
        menu = wx.Menu()
        self.SetMenuBar(menuBar)
        self.Centre()
        self.submit(self)
        self.queue(self)
        self.running(self)

    def submit(self, event):
        self.Show()
        dt1 = MyFileDropTarget(self)
        self.tc_files = wx.TextCtrl(self.panel1, wx.ID_ANY, pos=(42, 120), size=(500, 25))
        self.tc_files.SetDropTarget(dt1)
        self.buttonGo = wx.Button(self.panel1, -1, "Submit", pos=(90,530))
        self.buttonGo.Bind(wx.EVT_BUTTON, self.submit1)
        self.buttonClose = wx.Button(self.panel1, -1, "Quit", pos=(195,530))
        self.buttonClose.Bind(wx.EVT_BUTTON, self.OnClose)
        outputtxt3 = '''Drag & Drop Folder of Packages to Verify'''
        wx.StaticText(self.panel1, -1, outputtxt3, (33, 64), style=wx.ALIGN_CENTRE)

    def notify(self, indir):
        """Update file in testcontrol after drag and drop"""
        self.tc_files.SetValue(indir[0])
        global indirTemp
        indirTemp = indir

    def submit1(self, edit):
        list1 = '\n'.join(indirTemp)
        queueList.append(list1)
        sys.stderr.write("submit1 printing\n")
        print queueList
        wx.MessageBox('Job Submitted')

    def queue(self, event):
        self.Show()
        self.buttonClose2 = wx.Button(self.panel2, -1, "Quit", pos=(195,170))
        self.buttonClose2.Bind(wx.EVT_BUTTON, self.OnClose)
        global log2
        log2 = wx.TextCtrl(self.panel2, -1, pos=(35, 210), size=(720,400),
                              style = wx.TE_MULTILINE|wx.TE_READONLY|wx.HSCROLL)
        sys.stderr.write("redirecting stdout to log2\n")
        self.redir2=RedirectText(log2)
        sys.stdout=self.redir2


    def showQueue(self, edit):
        sys.stderr.write("showQueue printing\n")
        global queueList
        print queueList

    def running(self, event):
        self.Show()
        self.buttonClose3 = wx.Button(self.panel3, -1, "Quit", pos=(195,170))
        self.buttonClose3.Bind(wx.EVT_BUTTON, self.OnClose)

        global log3
        log3 = wx.TextCtrl(self.panel3, -1, pos=(35, 210), size=(720,400),
                              style = wx.TE_MULTILINE|wx.TE_READONLY|wx.HSCROLL)
        sys.stderr.write("redirecting stdout to log3\n")
        self.redir3=RedirectText(log3)
        sys.stdout=self.redir3

    def go3(self, edit):
        sys.stderr.write("go3 printing\n")
        print "do something"

    def OnClose(self, e):
        self.Close(True)

class MyFileDropTarget(wx.FileDropTarget):
    """"""
    def __init__(self, window):
        wx.FileDropTarget.__init__(self)
        self.window = window

    def OnDropFiles(self, x, y, filenames):
        self.window.notify(filenames)

class RedirectText:
    def __init__(self,aWxTextCtrl):
        self.out=aWxTextCtrl

    def write(self,string):
        self.out.WriteText(string)

app = wx.App()
ScrolledWindow(None, -1, 'Application')
app.MainLoop()

注意你必须去做一些简单的调试，因为你已经劫持了标准输出。我仍然强烈建议您找到更好的方法来执行此操作，当您真正完成您的应用程序时，一旦您对这个实验感到满意。以您的方式进行操作是不健壮或不可维护的。对此的其他证据是对全局变量的需求：一个重要的警告信号，表明您的代码将变得脆弱且难以维护。

于 2014-02-16T05:50:49.090 回答
1

正如我在另一个答案中提到的那样，它不起作用的表面原因是因为有一个错误:) IE 所写的逻辑不是预期的。更深层次的原因是应用程序需要更好的设计。附录是如何完成的示例。

这种设计的主要特点是将每个功能的逻辑（每个功能由用户在笔记本的单独选项卡上携带）分离到单独的类中。类通过方法调用进行通信，并且连接在构造时是静态的（例如，对队列管理器的引用在构造时传递给提交控制器）。

这绝不应该是“最好的”设计，它只是可能改进的一个例子——改进减少了原始类型中难以找到逻辑错误的机会。

import wx

class MainWindow(wx.Frame):
    def __init__(self, parent, id, title):

        wx.Frame.__init__(self, parent, id, title, size=(800, 700))
        self.tabbed = wx.Notebook(self, -1, style=(wx.NB_TOP))
        self.running = RunningPane(self.tabbed)
        self.queue = QueuePane(self.tabbed, self.running)
        self.submissions = SubmissionPane(self.tabbed, self.queue)

        self.tabbed.AddPage(self.submissions, "Submit Job")
        self.tabbed.AddPage(self.queue, "Queue")
        self.tabbed.AddPage(self.running, "Running Jobs")

        self.CreateStatusBar()
        menuBar = wx.MenuBar()
        menu = wx.Menu()
        self.SetMenuBar(menuBar)
        self.Centre()
        self.Show()


#---
#

class SubmissionPane(wx.Panel):
    def __init__(self, parent, queue_control):
        wx.Panel.__init__(self, parent, -1)
        self.parent = parent
        self.queue_control = queue_control
        self.selected_folder = None

        self.drop_target = MyFileDropTarget(self)
        self.tc_files = wx.TextCtrl(self, wx.ID_ANY, pos=(42, 120), size=(500, 25))
        self.tc_files.SetDropTarget(self.drop_target)
        self.buttonGo = wx.Button(self, -1, "Submit", pos=(90,530))
        self.buttonGo.Bind(wx.EVT_BUTTON, self.OnSubmit)

        self.buttonClose = wx.Button(self, -1, "Quit", pos=(195,530))
        self.buttonClose.Bind(wx.EVT_BUTTON, self.OnClose)

        outputtxt3 = '''Drag & Drop Folder of Packages to Verify'''
        wx.StaticText(self, -1, outputtxt3, (33, 64), style=wx.ALIGN_CENTRE)
        self.Show()


    def SetSubmissionFolders(self, folder_list):
        """Called by the FileDropTarget when files are dropped"""

        self.tc_files.SetValue(','.join(folder_list))  
        self.selected_folders = folder_list


    def OnSubmit(self, event):
        self.queue_control.QueueFolders(self.selected_folders)
        wx.MessageBox('Job Submitted')


    def OnClose(self, e):
        self.Close(True)


class MyFileDropTarget(wx.FileDropTarget):
    """"""
    def __init__(self, window):
        wx.FileDropTarget.__init__(self)
        self.window = window


    def OnDropFiles(self, x, y, filenames):
        self.window.SetSubmissionFolders(filenames)

#---
#

class QueuePane(wx.Panel):
    def __init__(self, parent, run_control):
        wx.Panel.__init__(self, parent, -1)

        self.parent = parent
        self.run_control = run_control

        self.queue = []

        self.buttonClose2 = wx.Button(self, -1, "Quit", pos=(195,170))
        self.buttonClose2.Bind(wx.EVT_BUTTON, self.OnClose)

        self.log_text = wx.TextCtrl(self, -1, pos=(35, 210), size=(720,400),
                                    style = wx.TE_MULTILINE|wx.TE_READONLY|wx.HSCROLL)
        self.Show()


    def QueueFolders(self, folder_list):
        """Called by anyone with a list of folders to queue.
            In this code, that is the submission pane."""
        self.queue.extend(folder_list)
        self.log_text.AppendText("\n".join(folder_list))


    def OnClose(self, e):
        self.Close(True)

#---
#

class RunningPane(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, -1)

        self.parent = parent

        self.buttonClose3 = wx.Button(self, -1, "Quit", pos=(195,170))
        self.buttonClose3.Bind(wx.EVT_BUTTON, self.OnClose)

        self.running_log = wx.TextCtrl(self, -1, pos=(35, 210), size=(720,400),
                                       style = wx.TE_MULTILINE|wx.TE_READONLY|wx.HSCROLL)
        self.Show()


    def OnClose(self, e):
        self.Close(True)
#
#---

app = wx.App()
MainWindow(None, -1, 'Application')
app.MainLoop()
于 2014-02-16T09:04:42.403 回答