wxPython 笔记本标签的垂直滚动条

Question

我正在尝试在我的一个笔记本标签中添加一个垂直滚动条，使用的是wxPython。我试过在几个不同的面板上添加窗口样式wx.VSCROLL，但都没有成功。以下是我的代码：

import wx
import os
class MyFrame(wx.Frame):
    def __init__(self, parent, ID, title):
        wx.Frame.__init__(self, parent, ID, title=title, size=(500,200))

        main = wx.Panel(self)

        nb = wx.Notebook(main)

        loginPg = wx.Panel(nb)
        entryPg = wx.Panel(nb, style=wx.VSCROLL) //<--- This kind of works
        projectsPg = wx.Panel(nb)

        nb.AddPage(loginPg, "Login")
        nb.AddPage(entryPg, "Entry")
        nb.AddPage(projectsPg, "Projects")

        self.entTitle = titlePanel(entryPg, -1)
        self.entLabel = labelPanel(entryPg, -1)
        self.entDescription = descrPanel(entryPg, -1)

        mainSizer = wx.BoxSizer(wx.VERTICAL)
        entryPgBox = wx.BoxSizer(wx.VERTICAL)

        mainSizer.Add(nb, 1, wx.ALL|wx.EXPAND)

        entryPgBox.Add(self.entTitle, 0, wx.EXPAND)
        entryPgBox.Add(self.entLabel, 0, wx.EXPAND)
        entryPgBox.Add(self.entDescription, 0, wx.EXPAND)

        entryPg.SetAutoLayout(True)
        entryPg.SetSizer(entryPgBox)
        entryPgBox.Fit(entryPg)

        main.SetAutoLayout(True)
        main.SetSizer(mainSizer)
        mainSizer.Fit(main)
        self.Layout()
        self.Show()

app = wx.App(False)
frame = MyFrame(None, -1, 'Test')
frame.Show()
app.MainLoop()

我的目标是让我的笔记本的第二个标签“Entry”可以垂直滚动。通过给entryPg添加style=wx.VSCROLL，我确实得到了一个滚动条，但它无法向下滚动。我该如何让我的Notebook标签entryPg有一个可以向下滚动的垂直滚动条呢？非常感谢任何帮助！

Answer 1

使用 wx.ScrolledWindow 代替 wx.Panel 可以让你获得一个垂直滚动条。

下面是一个简单的例子：

import wx

class Frame ( wx.Frame ):

    def __init__( self, parent ):
        wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = u"Test", pos = wx.DefaultPosition, size = wx.Size( 600,300 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )

        self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )

        sizer = wx.BoxSizer( wx.VERTICAL )

        self.notebook = wx.Notebook( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, 0 )
        self.login = wx.Panel( self.notebook, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
        self.notebook.AddPage( self.login, u"Login", False )
        self.entry = wx.ScrolledWindow( self.notebook, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.HSCROLL|wx.VSCROLL )
        self.entry.SetScrollRate( 5, 5 )
        entry_sizer = wx.BoxSizer( wx.VERTICAL )

        self.text = wx.StaticText( self.entry, wx.ID_ANY, u"Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc, Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.text.Wrap( 600 )
        entry_sizer.Add( self.text, 1, wx.ALL, 0 )


        self.entry.SetSizer( entry_sizer )
        self.entry.Layout()
        entry_sizer.Fit( self.entry )
        self.notebook.AddPage( self.entry, u"Entry", True )

        sizer.Add( self.notebook, 1, wx.EXPAND |wx.ALL, 0 )


        self.SetSizer( sizer )
        self.Layout()

        self.Centre( wx.BOTH )
        self.Show()

if __name__ == "__main__":
    app = wx.App()
    Frame(None)
    app.MainLoop()

在这个例子中，Entry 页面会有一个垂直和一个水平的滚动条。需要注意的是，只有当内容超出当前显示的大小时，滚动条才会出现。如果你把这个应用窗口最大化，滚动条就会消失。