我的 Python 程序遇到了一些问题。基本上，它是一个非常非常简单的文件管理器。
我一直试图让它在文件夹之间移动(用户单击一个文件夹，程序刷新显示并显示文件夹的内容)。
我遇到的问题是我似乎无法获得刷新显示的按钮，然后在单击时用新文件夹和文件填充它。
这是我在 Linux 上使用的代码。
import wx
import fileBrowser
class interface(wx.Frame):
def __init__(self, parent, id):
'''(object, int) --> None
Set up wx python in a frame and displays it and contents defined in this function on the screen.'''
wx.Frame.__init__(self, parent, id, "Bronto", size = (800, 600))
panel = wx.Panel(self)
self.createPanels()
contents = fileBrowser.print_items("/")
wx.StaticText(panel, -1, "/", (50, 10))
col = 50
row = 50
for items in contents:
name = items
col, row = self.makeIcons(panel, (800, 600), name, col, row)
def makeIcons(self, panel, param, name, col, row):
'''(object, object) --> None
Place a button on the window that uses an image as its icon.'''
pic = wx.Image("folder.png", wx.BITMAP_TYPE_PNG).ConvertToBitmap()
self.button = wx.BitmapButton(panel, -1, pic, pos = (col, row))
wx.StaticText(panel, -1, name, (col + 10, row + 40))
self.Bind(wx.EVT_BUTTON, self.displayContents, self.button)
self.button.SetDefault()
if(col < 600):
return col + 90, row
else:
col = 50
return col, row + 80
def createPanels(self):
'''(object) --> None
Create and place both menu and status bars on the window.'''
status = self.CreateStatusBar()
menubar = wx.MenuBar()
File = wx.Menu()
Edit = wx.Menu()
menubar.Append(File,"File")
menubar.Append(Edit, "Edit")
new = wx.MenuItem(File, 101, '&New\tCtrl+N', 'Creates a new document')
File.AppendItem(new)
self.Bind(wx.EVT_MENU, self.NewApplication, id=101)
self.SetMenuBar(menubar)
def NewApplication(self, event):
app = wx.PySimpleApp()
frame = interface(parent = None, id =1)
frame.Show()
app.MainLoop()
def displayContents(self, event):
'''(event) --> None
Display the contents of the folder clicked on'''
#self.panel.Destroy();
#self.panel = wx.Panel(self)
self.Refresh(True)
contents = fileBrowser.print_items("/home")
col = 50
row = 50
for items in contents:
name = items
wx.Yield()
col, row = self.makeIcons(panel, (800, 600), name, col, row)
if __name__ == "__main__":
app = wx.PySimpleApp()
frame = interface(parent = None, id =1)
frame.Show()
app.MainLoop()
这里是fileBrower程序(目前只看文件夹，以后会改)
import os
import os.path
def print_items(d):
'''(str) -> NoneType
Print the list of files and directories in directory d, recursively,
prefixing each with indentation.'''
icons = []
#print out the names of files and subdirectories
for filename in os.listdir(d):
subitem = os.path.join(d, filename)
if os.path.isdir(subitem):
print filename
icons.append(filename)
return icons
@pthonm:我添加了你建议的代码，但它似乎没有用新的东西更新它(虽然它确实清除了窗口)
编辑:好的，我几乎可以正常工作了。我可以使用 self.Refresh(True) 让它显示内容，但它只有在我不使用 self.panel.Destroy() 方法时才有效。那么，关于如何摆脱按钮和文本的任何建议(请参阅我添加的 displayContents 方法)？
EDIT2:我让它工作了。我所做的是，我将其添加到我的 displayContents 方法中。不过，这可能不是执行此操作的最佳方法。
def displayContents(self, event):
'''(event) --> None
Display the contents of the folder clicked on'''
self.panel.Destroy();
self.panel = wx.Panel(self)
self.createPanels()
self.Update()
wx.StaticText(self.panel, -1, location, (50, 10))
contents = fileBrowser.print_items("/home/gum/Documents")
col = 50
row = 50
for directory,name in contents.iteritems():
col, row = self.makeIcons(self.panel, (800, 600), name, col, row)
请您参考如下方法:
我觉得是你的问题
- 为每个文件夹创建新面板
- 不要删除旧面板
我建议您将旧面板保存在 self.panel 的某处并调用 self.panel.Destroy();self.panel = wx.Panel(self) 每一次。
更好的选择是使用 wx.ListCtrl，捕捉 EVT_LIST_ITEM_ACTIVATED 然后删除列表并用项目填充它:
__init__:
self.ListCtrl = wx.ListCtrl(self)
self.listCtrl.InsertColumn(0, 'name')
self.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.OnChangeFolder, self.listCtrl)
self.il = wx.ImageList(16, 16)
self.il.Add(wx.Image("folder.png", wx.BITMAP_TYPE_PNG).ConvertToBitmap())
self.listCtrl.AssignImageList(self.il)
self.folders = fileBrowser.print_items("/home/gum/Documents")
self.UpdateList()
UpdateList:
self.listCtrl.DeleteAllItems()
for index, item in enumerate(self.folders):
self.listCtrl.Append((item, ))
self.listCtrl.SetItemImage(index, 0)
# 0 is the ImageList index, change it for other icons
OnChangeFolder:
self.folders = file.Browser.print_items(self.listCtrl.GetFocusedItem().GetText())
self.UpdateList
顺便说一句，wx 风格表明方法和类也是驼峰式的，你知道的:)
