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我正在尝试学习如何将 wxPythonwxScrolledWindow类用于项目,但我遇到了障碍。

我已经设置了一个程序,该程序使面板派生自wxScrolledWindow包含控件列表的类;面板的客户端故意太小而无法一次显示所有控件。我设法在面板的一侧获得了一个滚动条,但单击它什么也没做。此外,每当我尝试从对象调用与滚动条相关的继承函数之一时,都会收到一个奇怪的错误:

Traceback (most recent call last):
  File "C:\Python27\Projects\Supervisor\test.py", line 69, in <module>
    frame = MyFrame(None, "Test Bench")
  File "C:\Python27\Projects\Supervisor\test.py", line 18, in __init__
    self.mainpanel = MyPanel(self)
  File "C:\Python27\Projects\Supervisor\test.py", line 62, in __init__
    self.SetScrollRate(10, 10)
  File "C:\Python27\lib\site-packages\wx-2.8-msw-unicode\wx\_windows.py", line 179, in SetScrollRate
    return _windows_.ScrolledWindow_SetScrollRate(*args, **kwargs)
TypeError: in method 'ScrolledWindow_SetScrollRate', expected argument 1 of type 'wxScrolledWindow *'

我看过很多例子,我不知道我在哪里犯了错误。

我在 MS Windows 下使用 Python 2.7.3、wxPython 2.8。我实际上已经设法完成了很多事情而没有遇到严重的问题,当然也没有这样的事情。

我的代码如下:

# Test.py
#
# Dummy file for testing things that are too complex to type into the shell
# directly.

import wx

class MyFrame(wx.Frame):

    def __init__(self, parent, title):
        wx.Frame.__init__(self, parent, title=title)

        self.SetSize((800, 500))
        self.Center()

        self.Bind(wx.EVT_CLOSE, self.OnClose)

        self.mainpanel = MyPanel(self)
        self.mainpanel.SetMaxSize(self.GetVirtualSize())

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.mainpanel)

        self.SetSizer(sizer)
        self.Show(True)

        mpsize = self.mainpanel.GetSize()
        mvsize = self.mainpanel.GetVirtualSize()
        vsize = self.GetVirtualSize()

        self.SetClientSize((mpsize[0], vsize[1]))
        self.mainpanel.SetSize((mpsize[0], vsize[1]))
        self.mainpanel.SetVirtualSize(mvsize)

    def OnClose(self, e):
        self.Destroy()


class MyPanel(wx.ScrolledWindow):

    def __init__(self, parent):

        wx.Panel.__init__(self, parent,
                          style = wx.VSCROLL)

        sizer = wx.GridBagSizer(10, 10)

        self.egps = []
        for i in range(20):
            leftbit = wx.StaticText(self, label = "Item " + str(i))
            midbit = wx.TextCtrl(self, id = wx.ID_ANY)
            rightbit = wx.CheckBox(self, id = wx.ID_ANY, label = "Checkbox")

            self.egps.append([leftbit, midbit, rightbit])

        for i in range(len(self.egps)):
            sizer.Add(self.egps[i][0], (i,0))
            sizer.Add(self.egps[i][1], (i,1))
            sizer.Add(self.egps[i][2], (i,2))

        self.SetSizer(sizer)
        self.SetScrollRate(10, 10)



if __name__ == "__main__":
    app = wx.App(False)

    frame = MyFrame(None, "Test Bench")

    app.MainLoop()
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1 回答 1

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好吧,我觉得有点傻。进一步审查后,问题是我改编了从 wx.Panel 继承的旧类的代码。因此,我有wx.Panel.__init__... 行而不是wx.ScrolledWindow.__init__... 行。

有趣的是,你盯着代码看了很长时间却看不到它……但是帖子一上来,它就在那里。:P

于 2013-01-11T00:45:36.660 回答