ScrolledWindow 内的 wxpython GridBagSizer 不起作用

Question

晚上好/早上好，

我一直在开发一个程序，并意识到在较低的分辨率下，大部分程序都会被截断。为了解决这个问题，我决定在 GUI 中添加一个滚动窗口。环顾四周，我发现了这个例子：

import wx as wx

class MainFrame(wx.Frame):
    def __init__(self, *args, **kwargs):
        wx.Frame.__init__(self, *args, **kwargs)

        #Panel that holds all the other panels
        self.mainPanel = wx.ScrolledWindow(self, -1)
        self.mainPanel.SetScrollbars(1, 1, 1, 1)
        self.mainPanel.SetBackgroundColour("LIGHT GREY")

        #Panels in mainPanel
        self.lefttopPanel = wx.Panel(self.mainPanel, -1)
        self.lefttopPanel.SetBackgroundColour("WHITE")        
        self.sizewidgets(self.panelwidgets(
                         text='Left Top Panel', 
                         num=12,
                         parent=self.lefttopPanel),
                         parent=self.lefttopPanel)        

        self.leftmiddlePanel = wx.Panel(self.mainPanel, -1)
        self.leftmiddlePanel.SetBackgroundColour("WHITE")        
        self.sizewidgets(self.panelwidgets(
                         text='Left Middle Panel',
                         num=6,
                         parent=self.leftmiddlePanel),
                         parent=self.leftmiddlePanel)

        self.leftbottomPanel = wx.Panel(self.mainPanel, -1)
        self.leftbottomPanel.SetBackgroundColour("WHITE")
        self.sizewidgets(self.panelwidgets(
                         text='Left Bottom Panel',
                         num=8,
                         parent=self.leftbottomPanel),
                         parent=self.leftbottomPanel)

        self.righttopPanel = wx.Panel(self.mainPanel, -1)
        self.righttopPanel.SetBackgroundColour("WHITE")        
        self.sizewidgets(self.panelwidgets(
                         text='Right Top Panel',
                         num=8,
                         parent=self.righttopPanel),
                         parent=self.righttopPanel)

        self.rightbottomPanel = wx.Panel(self.mainPanel, -1)
        self.rightbottomPanel.SetBackgroundColour("WHITE")
        self.sizewidgets(self.panelwidgets(
                         text='Right Bottom Panel',
                         num=8,
                         parent=self.rightbottomPanel),
                         parent=self.rightbottomPanel)


        mpsizer = wx.GridBagSizer(vgap=4, hgap=4)
        mpsizer.Add(self.lefttopPanel, pos=(0,0), span=(1,1), flag=wx.EXPAND)
        mpsizer.Add(self.leftmiddlePanel, pos=(1,0), span=(1,1), flag=wx.EXPAND)
        mpsizer.Add(self.leftbottomPanel, pos=(2,0), span=(1,2), flag=wx.EXPAND)
        mpsizer.Add(self.righttopPanel, pos=(0,1), span=(2,2), flag=wx.EXPAND)
        mpsizer.Add(self.rightbottomPanel, pos=(2,2), span=(1,1), flag=wx.EXPAND)
        mpsizer.AddGrowableCol(1)
        mpsizer.AddGrowableRow(1)
        self.mainPanel.SetSizer(mpsizer)

        #Adding a refresh to resize event
        self.Bind(wx.EVT_SIZE, self.OnResize)

        self.Show()

    def OnResize(self, event):
        self.Refresh()
        event.Skip()

    def sizewidgets(self, widgetlist , parent):
        psizer = wx.GridSizer(cols=2, vgap=5,hgap=5)
        for widget in widgetlist:
            psizer.Add(widget)
        parent.SetSizer(psizer)



    def panelwidgets(self, text, num, parent):
        widgets = []
        for i in range(num):
            widgets += [wx.StaticText(parent, label=text)]
        return widgets

if __name__ == "__main__":
    app = wx.App()
    MainFrame(None, size=(800, 800), title="GridBagSizer Problem")
    app.MainLoop()

那个例子效果很好，所以我决定尝试修改它以适应我的程序，因为我没有运气在我的整个程序中添加一个滚动窗口，所以我做了这些改变：

import wx as wx

class MainFrame(wx.Frame):
    def __init__(self, *args, **kwargs):
        wx.Frame.__init__(self, *args, **kwargs)

        #Panel that holds all the other panels
        self.mainPanel = wx.ScrolledWindow(self, -1)
        self.mainPanel.SetScrollbars(1, 1, 1, 1)
        self.mainPanel.SetBackgroundColour("LIGHT GREY")

    # Handles the c reation of all of the static text labels
    def make_label(text, starty, startx, height, width):
        self.label = wx.StaticText(self, -1, text, wx.DefaultPosition, wx.DefaultSize)
        sizer.Add(self.label, (starty, startx), (height, width), wx.EXPAND)
        return self.label

        sizer = wx.GridBagSizer()
    for i in range(0, 4):   
        # all the labels
        make_label('Voltage', 7, i*5, 1, 1)
        make_label('Current', 8, i*5, 1, 1)
        make_label('Power', 9, i*5, 1, 1)
        make_label('Rail 1', 6, (i*5)+1, 1, 1)
        make_label('Rail 2', 6, (i*5)+2, 1, 1)
        make_label('Rail 3', 6, (i*5)+3, 1, 1)  
        make_label('Total Power', 6, (i*5)+4, 1, 1)
        make_label('Status:', 14, (i*5), 1, 1)

    sizer.AddGrowableRow(1)
    sizer.AddGrowableCol(1)
        self.mainPanel.SetSizer(sizer)

        #Adding a refresh to resize event
        self.Bind(wx.EVT_SIZE, self.OnResize)

        self.Show()

    def OnResize(self, event):
        self.Refresh()
        event.Skip()

    def sizewidgets(self, widgetlist , parent):
        psizer = wx.GridSizer(cols=2, vgap=5,hgap=5)
        for widget in widgetlist:
            psizer.Add(widget)
        parent.SetSizer(psizer)



    def panelwidgets(self, text, num, parent):
        widgets = []
        for i in range(num):
            widgets += [wx.StaticText(parent, label=text)]
        return widgets

if __name__ == "__main__":
    app = wx.App()
    MainFrame(None, size=(800, 800), title="GridBagSizer Problem")
    app.MainLoop()

由于某种原因，在我进行更改后，滚动条只是位于左上角并且不起作用。当我尝试将其添加到更大的程序中时，也会发生同样的事情。谁能帮我解释一下为什么会这样？

Answer 1

由

创建的子小部件

self.label = wx.StaticText(self, -1, text, wx.DefaultPosition, wx.DefaultSize)

以self为父类，即MainFrame类。

改变它，使父是滚动窗口的实例，如下所示

self.label = wx.StaticText(self.mainPanel, -1, text, wx.DefaultPosition, wx.DefaultSize)