wx Python：不可见/透明对话

Question

我有一个带有wx.Grid的wx.Dialog，它包含在ScrolledWindow面板中。该对话框由主框架上的菜单项启动，该菜单项不是对话框的父框架。

有时，当我的对话框启动时，此面板中的内容不可见！如图所示：

我正在执行GUI组件创建过程中的打印语句，所以我不确定为什么Dialog中偶尔没有内容？

当这种情况开始发生时，我关闭并重新启动对话框，但它经常连续多次发生，然后看似自行解决，正常显示在第5次+尝试。

还有其他人遇到过这个吗？原因是什么？

我正在使用Ubuntu 16.04 LTS和wx.Python 3.0

编辑：包括我认为问题所在的代码示例。

我有一个＆＃39;重绘＆＃39;由于ScrolledWindow而被调用以计算Dialog大小的方法。 wx.Grid的每一行旁边都有按钮，所以我不能让wx.Grid处理它自己的滚动。在向wx.Grid添加新行之后调用此方法。

重绘方法如下：

def redraw(self):
    # a change has been made to the file, reset saved boolean
    self.m_saved_or_cancelled = False
    # call these to update the view
    self.m_list_view.AutoSize() # this is the wx.Grid 
    self.m_list_view.Fit()
    self.scrolled_panel.Layout()
    self.Layout()
    self.Fit()

    # as we have a scrolledWindow panel - we must update the minimum size in order to display the view
    # the maximum size is the display size
    display_width, display_height = wx.DisplaySize()

    w, sizer_height = self.main_sizer.GetSize()

    # height of the rows
    button_height = 10
    # number of items
    items = self.m_list_view.GetNumberRows() + 1
    cols =  self.m_list_view.GetNumberCols()

    # column widths added together
    col_width = 100
    for col in range(cols):
        col_width += self.m_list_view.GetColSize(col)

    print "col_width %s" % col_width

    # height is at least the minimum or the row height * number of items
    height = button_height * items
    print "sizer_height %s, height %s" % (sizer_height, height)

    if height < self.MIN_WINDOW_HEIGHT:
        height = self.MIN_WINDOW_HEIGHT

    print "sizer_heighth %s, height %s" % (sizer_height, height)

    if height <= sizer_height:
        # increase by a factor of this space 2/3
        height += ((sizer_height)/3)
    print "height %s" % height

    if height > (display_height - self.MAX_WINDOW_HEIGHT_OFFSET):
        self.SetMinSize((col_width, display_height - self.MAX_WINDOW_HEIGHT_OFFSET))
        self.SetSize((col_width, display_height - self.MAX_WINDOW_HEIGHT_OFFSET))
    else:
        self.SetMinSize((col_width, height))
        self.SetSize((col_width, height))

    # the virtual size has to be greater than required space rather significantly in order to display correctly
    self.scrolled_panel.SetVirtualSize((col_width, height))
    self.scrolled_panel.AdjustScrollbars()
    self.scrolled_panel.Layout()
    # centered
    self.CenterOnScreen()