笔记本中的 wxPython scrolledwindow 不滚动

Question

我想在笔记本的标签上滚动 windows。如果 window 太小，内容应该是可滚动的。如果 window 足够大，一切都会正确布局。当 window 太小无法容纳所有内容时，它看起来也正确，但滚动条永远不会出现，我也不能用鼠标滚轮滚动。这是我最少的失败案例：

#!/usr/bin/env python3
import wx

class MainWindow(wx.Frame):
    def __init__(self, parent):
        wx.Frame.__init__ (self, parent, id = wx.ID_ANY, title = u"Title", pos = wx.DefaultPosition, size = wx.Size(800,480), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL)
        self.SetSizeHints(wx.DefaultSize, wx.DefaultSize)
        notebook = wx.Notebook(self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, 0)
        
        for tab in range(0,3):
            scrolled_window = wx.ScrolledWindow(notebook, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.HSCROLL|wx.VSCROLL)
            sizer = wx.GridSizer(0, 5, 0, 0)
            scrolled_window.SetScrollRate(5, 5)
            scrolled_window.SetSizer(sizer)
            notebook.AddPage(scrolled_window, "Tab %d" % tab, False)
            scrolled_window.SetScrollbars(1, 1, 1, 1)
            
            for btn in range(0,50):
                button = wx.Button(scrolled_window, wx.ID_ANY, str(btn), wx.DefaultPosition, wx.DefaultSize, 0)
                button.SetMinSize((-1, 90))
                sizer.Add(button, 0, wx.ALL|wx.EXPAND, 5)
                sizer.Fit(scrolled_window)
                self.Layout()                
    
app = wx.App(False)
main_window = MainWindow(parent=None)
main_window.Show(True)
app.MainLoop()

此外，我看到此断言失败（每个选项卡一次或每当我更改选项卡时）：

(scroll_bug.py:8990): Gtk-CRITICAL **: 09:02:58.514: gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkNotebook

感谢帮助

Answer 1

我不确定，但问题可能在于尝试在笔记本中使用 ScrolledWindow 作为从属子项 window。
面板更合适。
尝试使用 ScrolledPanel 代替，例如

#!/usr/bin/env python3
import wx
import wx.lib.scrolledpanel as scrolled

class MainWindow(wx.Frame):
    def __init__(self, parent):
        wx.Frame.__init__ (self, parent, id = wx.ID_ANY, title = u"Title", pos = wx.DefaultPosition, size = wx.Size(800,480), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL)
        self.SetSizeHints(wx.DefaultSize, wx.DefaultSize)
        self.panel = wx.Panel(self)
        notebook = wx.Notebook(self.panel, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, 0)
        
        for tab in range(0,3):
            scrolled_window = scrolled.ScrolledPanel(notebook, wx.ID_ANY)
            scrolled_window.SetupScrolling()
            notebook.AddPage(scrolled_window, "Tab %d" % tab, False)
            bsizer = wx.GridSizer(0, 5, 0, 0)            
            for btn in range(0,50):
                button = wx.Button(scrolled_window, wx.ID_ANY, str(btn), wx.DefaultPosition, wx.DefaultSize, 0)
                button.SetMinSize((-1, 90))
                bsizer.Add(button, 0, wx.ALL|wx.EXPAND, 5)
            scrolled_window.SetSizer(bsizer)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(notebook, 1, wx.ALL| wx.EXPAND, 5)
        self.panel.SetSizer(sizer)
        self.Layout()                
        self.Refresh()                
    
app = wx.App(False)
main_window = MainWindow(parent=None)
main_window.Show(True)
app.MainLoop()

笔记本中的 wxPython scrolledwindow 不滚动

wxPython scrolledwindow in a notebook does not scroll

wxpython

wxwidgets

wxnotebook