【发布时间】：2011-06-03 17:40:17
【问题描述】：
下面发布了代码的简化版本（删除了空格、cmets 等以减小大小 - 但我的程序的一般格式保持大致相同）。
当我运行脚本时，静态文本会正确换行，但面板中的其他项目不会向下移动（它们的行为就好像静态文本只有一行，因此并非所有内容都可见）。
如果我手动调整窗口/框架的大小，即使只是很小的量，一切都会得到纠正，并按应有的方式显示。
为什么一开始就不能正确显示？我尝试了GetParent().Refresh() 或Update() 和GetTopLevelParent().Update() 或Refresh() 的各种组合。我也尝试了我能想到的一切，但如果不手动调整框架/窗口的大小，就无法正确显示。一旦重新调整大小，它就可以完全按照我的意愿工作。
信息：
- Windows XP
- Python 2.5.2
- wxPython 2.8.11.0 (msw-unicode)
我的代码：
#! /usr/bin/python
import wx
class StaticWrapText(wx.PyControl):
def __init__(self, parent, id=wx.ID_ANY, label='', pos=wx.DefaultPosition,
size=wx.DefaultSize, style=wx.NO_BORDER,
validator=wx.DefaultValidator, name='StaticWrapText'):
wx.PyControl.__init__(self, parent, id, pos, size, style, validator, name)
self.statictext = wx.StaticText(self, wx.ID_ANY, label, style=style)
self.wraplabel = label
#self.wrap()
def wrap(self):
self.Freeze()
self.statictext.SetLabel(self.wraplabel)
self.statictext.Wrap(self.GetSize().width)
self.Thaw()
def DoGetBestSize(self):
self.wrap()
#print self.statictext.GetSize()
self.SetSize(self.statictext.GetSize())
return self.GetSize()
class TestPanel(wx.Panel):
def __init__(self, *args, **kwargs):
# Init the base class
wx.Panel.__init__(self, *args, **kwargs)
self.createControls()
def createControls(self):
# --- Panel2 -------------------------------------------------------------
self.Panel2 = wx.Panel(self, -1)
msg1 = 'Below is a List of Files to be Processed'
staticBox = wx.StaticBox(self.Panel2, label=msg1)
Panel2_box1_v1 = wx.StaticBoxSizer(staticBox, wx.VERTICAL)
Panel2_box2_h1 = wx.BoxSizer(wx.HORIZONTAL)
Panel2_box3_v1 = wx.BoxSizer(wx.VERTICAL)
self.wxL_Inputs = wx.ListBox(self.Panel2, wx.ID_ANY, style=wx.LB_EXTENDED)
sz = dict(size=(120,-1))
wxB_AddFile = wx.Button(self.Panel2, label='Add File', **sz)
wxB_DeleteFile = wx.Button(self.Panel2, label='Delete Selected', **sz)
wxB_ClearFiles = wx.Button(self.Panel2, label='Clear All', **sz)
Panel2_box3_v1.Add(wxB_AddFile, 0, wx.TOP, 0)
Panel2_box3_v1.Add(wxB_DeleteFile, 0, wx.TOP, 0)
Panel2_box3_v1.Add(wxB_ClearFiles, 0, wx.TOP, 0)
Panel2_box2_h1.Add(self.wxL_Inputs, 1, wx.ALL|wx.EXPAND, 2)
Panel2_box2_h1.Add(Panel2_box3_v1, 0, wx.ALL|wx.EXPAND, 2)
msg = 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
msg += 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
msg += 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
msg += 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
staticMsg = StaticWrapText(self.Panel2, label=msg)
Panel2_box1_v1.Add(staticMsg, 0, wx.ALL|wx.EXPAND, 2)
Panel2_box1_v1.Add(Panel2_box2_h1, 1, wx.ALL|wx.EXPAND, 0)
self.Panel2.SetSizer(Panel2_box1_v1)
# --- Combine Everything -------------------------------------------------
final_vbox = wx.BoxSizer(wx.VERTICAL)
final_vbox.Add(self.Panel2, 1, wx.ALL|wx.EXPAND, 2)
self.SetSizerAndFit(final_vbox)
class TestFrame(wx.Frame):
def __init__(self, *args, **kwargs):
# Init the base class
wx.Frame.__init__(self, *args, **kwargs)
panel = TestPanel(self)
self.SetClientSize(wx.Size(500,500))
self.Center()
class wxFileCleanupApp(wx.App):
def __init__(self, *args, **kwargs):
# Init the base class
wx.App.__init__(self, *args, **kwargs)
def OnInit(self):
# Create the frame, center it, and show it
frame = TestFrame(None, title='Test Frame')
frame.Show()
return True
if __name__ == '__main__':
app = wxFileCleanupApp()
app.MainLoop()
【问题讨论】：