在点击按钮，数据从面板二字段应复制到面板一字段

Question

我是python语言的初学者，我正在尝试使用wxpython为我的程序制作一个简单的gui。我的gui由一个框架和两个选项卡(使用wxPanel)组成(选项卡1和选项卡2)。我在选项卡1和选项卡2上都放置了txtctrl小部件。在选项卡1上，我放置了一个按钮，该按钮获取所有txtctrl值并将它们分配给相应的变量。我的问题是，我可以从txtctrl的值被放置在选项卡1面板，并将它们分配给选项卡1中的变量，但我不能从txtctrl的值是在选项卡2面板，并在选项卡1面板中使用它们(我想从选项卡2面板中获取值，并将它们分配给选项卡1面板中的变量。)。你能帮我解决这个问题并运行我的代码吗?

我搜索了很多网站，阅读了关于帧或类之间数据传输的例子，并试图应用它们，但我仍然不能使它工作。

是我的GUI代码;

from wxPython.wx import *
import os
class PageOne(wxPanel):
    def __init__(self, parent):
        wxPanel.__init__(self, parent)
        self.SetBackgroundColour("gray")
        self.tc1=wxTextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.tc2=wxTextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.tc3=wxTextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.st1=wxStaticText(self, -1, "input", pos=(10, 12))
        self.st2=wxStaticText(self, -1, "X:", pos=(10, 12))
        self.st3=wxStaticText(self, -1, "Y:", pos=(10, 12))
        self.st4=wxStaticText(self, -1, "Z:", pos=(10, 12))
        #flexgrid 
        self.fgs = wxFlexGridSizer(1, 7, 9, 10) 
        self.fgs.AddMany([(self.st1, 1, wxEXPAND),(self.st2, 1, 
        wxEXPAND),(self.tc1, 1,wxEXPAND),(self.st3, 1, wxEXPAND),
        (self.tc2, 1, wxEXPAND),(self.st4, 1, wxEXPAND),(self.tc3, 1,
        wxEXPAND)])
        # statik text 
        self.hsizer1 = wxBoxSizer(wxHORIZONTAL)
        self.hsizer2 = wxBoxSizer(wxHORIZONTAL)
        self.vsizerb = wxBoxSizer(wxVERTICAL)
        self.hsizer1.Add(self.fgs, 1, wxEXPAND |wxALIGN_CENTER| wxALL,1)
        self.but1=wxButton(self, 1, 'Calculate', (10, 10))
        self.but1.Bind(EVT_BUTTON, self.Create_OnClick)
        self.hsizer2.Add(self.but1, 1, wxALIGN_CENTER)
        self.vsizerb.Add(self.hsizer1, 1.8, wxEXPAND | wxALL, 10)
        self.vsizerb.Add(self.hsizer2, 0.2, wxEXPAND | wxALL, 10)
        self.SetSizer(self.vsizerb)
        self.PTWO=PageTwo(self)
        self.PTWO.Show()
    def Create_OnClick(self, event):
        text1=self.tc1.GetValue()
        text2=self.tc2.GetValue()
        text3=self.tc3.GetValue()
        #here I want to get pt2_1 value from tab2 panel and assign it
        #to text4 varibale.
        #on the gui, if you fill all txtcrtl boxes and press calculate 
        #button, it gives values of text3 and text4 on cmd.
        #I can get text3 value but cannot get text4 value.It gives null?
        text4=self.PTWO.pt2_1.GetValue()
        print "text_fromtab2:",text4,"text_fromtab1:",text3
        yer=os.getcwd()
class PageTwo(wxPanel):
    def __init__(self, parent):
        wxPanel.__init__(self, parent)
        self.SetBackgroundColour("gray")
        self.hsizerb = wxBoxSizer(wxHORIZONTAL)
        self.st5=wxStaticText(self, -1, "Input 1 (mm)", pos=(10, 12))
        # I want to be able to get these values from PageOne 
        self.pt2_1=wxTextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.fgs_pt2 = wxFlexGridSizer(1, 2, 10, 10)   
        self.fgs_pt2.AddMany([(self.st5, 1, wxEXPAND),(self.pt2_1, 1,
        wxEXPAND)])
        self.hsizerb.Add(self.fgs_pt2, 1, wxEXPAND |wxALIGN_CENTER| 
        wxALL, 10)
        self.SetSizer(self.hsizerb)
class MainFrame(wxFrame):
    def __init__(self, parent, fid, title):
        wxFrame.__init__(self, parent, fid, title, 
            pos = (200, 50), 
            size = (500, 200), 
            style = wxDEFAULT_FRAME_STYLE 
                |wxNO_FULL_REPAINT_ON_RESIZE)
        panel1 = wxPanel(self, -1)
        panel1.SetBackgroundColour("blue")
        nb = wxNotebook(panel1)
        page1 = PageOne(nb)
        page2 = PageTwo(nb)
        nb.AddPage(page1, "Tab 1")
        nb.AddPage(page2, "Tab 2")
        sizer = wxBoxSizer(wxVERTICAL)
        sizer.Add(nb, 1, wxALL|wxALIGN_CENTER|wxEXPAND, 1 )
        panel1.SetSizer(sizer)
        panel1.SetAutoLayout(True)
        self.Show(True)
if __name__ == "__main__":
        app = wxPySimpleApp()
        frame = MainFrame(None, wxID_ANY, "MY PROGRAM")
        app.MainLoop()

Answer 1

当您已经在MainFrame中创建PageTwo时，您正在创建它两次

nb = wxNotebook(panel1)
page1 = PageOne(nb)
page2 = PageTwo(nb)
nb.AddPage(page1, "Tab 1")
nb.AddPage(page2, "Tab 2")

你不需要在PageOne中重新创建它，所以删除这个

self.PTWO=PageTwo(self)
self.PTWO.Show()

将PageTwo传递给PageOne，例如

class PageOne(wxPanel):
    def __init__(self, parent, page2):
        wxPanel.__init__(self, parent)
        self.PTWO=page2

和在MainFrame

nb = wxNotebook(panel1)
page2 = PageTwo(nb)
page1 = PageOne(nb, page2)

一旦你完成了这些更改，你应该能够正确地访问page2的值，但这就是说你需要更多地考虑你要做什么?

• 更好的方法是让页面保存值到一些模型/对象和其他页面可以访问这些数据，而不是直接访问UI元素，因为你可能需要显示错误和清理数据之前处理，无论如何，你可以做的选项卡更改

• 用更好的变量名代替text1 use self。textX或self。X等

• 您应该将计算功能分离到第三类或可能是Mainframe, pagee1和page2应该只收集数据

Answer 2

您从哪里得到这样导入wxPython的想法?我很惊讶这居然管用。你应该这样做:

import wx

你这样做的方式来自wxPython 2.6或更早的版本，它已经超过5年了。你也不应该像那样从另一个屏幕提取信息。你可以像其他人提到的那样做(即将第2页传递到第1页)，或者你可以这样做:

import wx
import os
class PageOne(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.SetBackgroundColour("gray")
        self.tc1=wx.TextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.tc2=wx.TextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.tc3=wx.TextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.st1=wx.StaticText(self, -1, "input", pos=(10, 12))
        self.st2=wx.StaticText(self, -1, "X:", pos=(10, 12))
        self.st3=wx.StaticText(self, -1, "Y:", pos=(10, 12))
        self.st4=wx.StaticText(self, -1, "Z:", pos=(10, 12))
        #flexgrid 
        self.fgs = wx.FlexGridSizer(1, 7, 9, 10) 
        self.fgs.AddMany([(self.st1, 1, wx.EXPAND),
                          (self.st2, 1, wx.EXPAND),
                          (self.tc1, 1,wx.EXPAND),
                          (self.st3, 1, wx.EXPAND),
                          (self.tc2, 1, wx.EXPAND),
                          (self.st4, 1, wx.EXPAND),
                          (self.tc3, 1, wx.EXPAND)])
        # statik text 
        self.hsizer1 = wx.BoxSizer(wx.HORIZONTAL)
        self.hsizer2 = wx.BoxSizer(wx.HORIZONTAL)
        self.vsizerb = wx.BoxSizer(wx.VERTICAL)
        self.hsizer1.Add(self.fgs, 1, wx.EXPAND |wx.ALIGN_CENTER| wx.ALL,1)
        self.but1=wx.Button(self, 1, 'Calculate', (10, 10))
        self.but1.Bind(wx.EVT_BUTTON, self.Create_OnClick)
        self.hsizer2.Add(self.but1, 1, wx.ALIGN_CENTER)
        self.vsizerb.Add(self.hsizer1, 1.8, wx.EXPAND | wx.ALL, 10)
        self.vsizerb.Add(self.hsizer2, 0.2, wx.EXPAND | wx.ALL, 10)
        self.SetSizer(self.vsizerb)
    def Create_OnClick(self, event):
        text1=self.tc1.GetValue()
        text2=self.tc2.GetValue()
        text3=self.tc3.GetValue()
        #here I want to get pt2_1 value from tab2 panel and assign it
        #to text4 varibale.
        #on the gui, if you fill all txtcrtl boxes and press calculate 
        #button, it gives values of text3 and text4 on cmd.
        #I can get text3 value but cannot get text4 value.It gives null?
        notebook = self.GetParent()
        pageTwo = notebook.page2
        text4=pageTwo.pt2_1.GetValue()
        print "text_fromtab2:",text4,"text_fromtab1:",text3
        yer=os.getcwd()
class PageTwo(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.SetBackgroundColour("gray")
        self.hsizerb = wx.BoxSizer(wx.HORIZONTAL)
        self.st5=wx.StaticText(self, -1, "Input 1 (mm)", pos=(10, 12))
        # I want to be able to get these values from PageOne 
        self.pt2_1=wx.TextCtrl(self, -1, '',  (110, 15), (120, -1))
        self.fgs_pt2 = wx.FlexGridSizer(1, 2, 10, 10)   
        self.fgs_pt2.AddMany([(self.st5, 1, wx.EXPAND),
                              (self.pt2_1, 1, wx.EXPAND)])
        self.hsizerb.Add(self.fgs_pt2, 1, wx.EXPAND |wx.ALIGN_CENTER|wx.ALL, 10)
        self.SetSizer(self.hsizerb)
class MyNotebook(wx.Notebook):
    def __init__(self, parent):
        wx.Notebook.__init__(self, parent)
        self.page1 = PageOne(self)
        self.page2 = PageTwo(self)
        self.AddPage(self.page1, "Tab 1")
        self.AddPage(self.page2, "Tab 2")

class MainFrame(wx.Frame):
    def __init__(self, parent, fid, title):
        wx.Frame.__init__(self, parent, fid, title, 
            pos = (200, 50), 
            size = (500, 200), 
            style = wx.DEFAULT_FRAME_STYLE 
                |wx.NO_FULL_REPAINT_ON_RESIZE)
        panel1 = wx.Panel(self, -1)
        panel1.SetBackgroundColour("blue")
        nb = MyNotebook(panel1)
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(nb, 1, wx.ALL|wx.ALIGN_CENTER|wx.EXPAND, 1 )
        panel1.SetSizer(sizer)
        panel1.SetAutoLayout(True)
        self.Show(True)
if __name__ == "__main__":
        app = wx.App(False)
        frame = MainFrame(None, wx.ID_ANY, "MY PROGRAM")
        app.MainLoop()

注意wx。PySimpleApp现在已弃用，所以我将其替换为wx.App(False)

就我个人而言，我会把所有的数据输入的东西在一个屏幕上或保存到数据库或使用套接字服务器或传递数据使用pubsub(这将需要某种事件发生在第二页，如笔记本更改事件)。上面的代码是一个hack，非常脆弱，但是它可以工作。