Question

我是编程和python和wxpython的新手。我已经查看了这段代码的字面上的HOURS，我试着在网上找到答案。单击菜单项后，我无法显示新窗口。到目前为止，这是我的代码......

import wx

class MainWindow(wx.Frame):

    def __init__(self,parent,id):
        wx.Frame.__init__(self,parent,id,'Python Test App',size=(600,400))
        panel=wx.Panel(self)
        wx.Frame.CenterOnScreen(self)
        ##wx.Frame.Maximize(self)

        status=self.CreateStatusBar()
        menubar=wx.MenuBar()
        file_menu=wx.Menu()
        edit_menu=wx.Menu()

        ID_FILE_NEW = 1
        ID_FILE_OPEN = 2

        ID_EDIT_UNDO = 3
        ID_EDIT_REDO = 4


        file_menu.Append(ID_FILE_NEW,"New Window","This is a new window")
        file_menu.Append(ID_FILE_OPEN,"Open...","This will open a new window")

        edit_menu.Append(ID_EDIT_UNDO,"Undo","This will undo your last action")
        edit_menu.Append(ID_EDIT_REDO,"Redo","This will redo your last undo")


        menubar.Append(file_menu,"File")
        menubar.Append(edit_menu,"Edit")
        self.SetMenuBar(menubar)

        self.Bind(wx.EVT_MENU, NewWindow.new_frame, None, 1)

class NewWindow(wx.Frame):

    def __init__(self,MainWindow,id):
        wx.Frame.__init__(self, None, id, 'New Window', size=(600,400))
        wx.Frame.CenterOnScreen(self)
        self.Show(False)

    def new_frame(self, event):
        NewWindow.Show(True)



if __name__=='__main__':
        app=wx.PySimpleApp()
        frame=MainWindow(parent=None,id=-1)
        frame.Show()
        app.MainLoop()

当我尝试运行此代码时，单击菜单项“新窗口”后出现此错误消息

TypeError: unbound method new_frame() must be called with NewWindow instance as first argument (got CommandEvent instance instead)

同样，我对编程很新。非常感谢任何帮助，而且，我知道我的代码可能不是“最干净”的代码。提前谢谢！

Answer 1

您似乎并不了解类在Python中的工作原理。您尝试调用NewWindow.new_frame，但实际上从未创建该类的实例。

错误消息是因为您在类上而不是在类的实例上调用方法。你想做的是：

newWin = NewWindow(...) # replace ... with the appropriate parameters
newWin.Show(True)

您没有在示例中提供足够的信息来了解NewWindow调用的适当参数（例如，您没有显示创建主窗口的位置），而是MainWindow和{{ id中的参数不仅仅适用于外观：wxPython需要知道父窗口。您应该查看wxPython文档以了解如何创建wxFrame。

Answer 2

在某种程度上修改你的代码我可以在用户点击新窗口选项时显示一个新窗口，

检查我修改过的东西让我知道这是你想要的吗？

import wx

class MainWindow(wx.Frame):

    def __init__(self,parent,id):
        wx.Frame.__init__(self,parent,id,'Python Test App',size=(600,400))
        panel=wx.Panel(self)
        wx.Frame.CenterOnScreen(self)

        status=self.CreateStatusBar()
        menubar=wx.MenuBar()
        file_menu=wx.Menu()
        edit_menu=wx.Menu()

        ID_FILE_NEW = 1
        ID_FILE_OPEN = 2

        ID_EDIT_UNDO = 3
        ID_EDIT_REDO = 4


        file_menu.Append(ID_FILE_NEW,"New Window","This is a new window")
        file_menu.Append(ID_FILE_OPEN,"Open...","This will open a new window")

        edit_menu.Append(ID_EDIT_UNDO,"Undo","This will undo your last action")
        edit_menu.Append(ID_EDIT_REDO,"Redo","This will redo your last undo")


        menubar.Append(file_menu,"File")
        menubar.Append(edit_menu,"Edit")
        self.SetMenuBar(menubar)

        self.Bind(wx.EVT_MENU, self.test, None, 1)

    def test(self, event):
        self.new = NewWindow(parent=None, id=-1)
        self.new.Show()

class NewWindow(wx.Frame):

    def __init__(self,parent,id):
        wx.Frame.__init__(self, parent, id, 'New Window', size=(400,300))
        wx.Frame.CenterOnScreen(self)
        #self.new.Show(False)

if __name__=='__main__':
        app=wx.PySimpleApp()
        frame=MainWindow(parent=None,id=-1)
        frame.Show()
        app.MainLoop()

在wxPython中显示另一个窗口/框架

2 个答案: