按下按钮时wxpython刷新窗口 [英] wxpython refresh window on button press
问题描述
我的Python程序遇到了一些麻烦.基本上，它是一个非常非常简单的文件管理器.
I have been having some trouble with my Python program. Basically, it is a very very simple file manager.
我一直试图让它在文件夹之间移动(用户单击文件夹，程序刷新显示并显示文件夹的内容).
I have been trying to get it to move between folders (user clicks a folder, program refreshes display and shows contents of folder).
我遇到的问题是，我似乎无法获得刷新显示的按钮，然后在单击时用新的文件夹和文件填充它.
The problem I am having is that I cant seem to get the button to refresh the display and then fill it with the new folders and files when clicked.
这是我正在使用的代码，它在Linux上.
Here is the code I am using and it is on Linux.
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()
这是fileBrower程序(目前我仅查看文件夹，但稍后会进行更改)
And here is the fileBrower program (at the moment I only look at folders, but I will change it later)
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:我添加了您建议的代码，但似乎没有用新的东西对其进行更新(尽管它确实清除了窗口)
@pthonm: I added the code you suggested but it doesnt seem to update it with the new stuff (it does clear the window though)
好的，我几乎可以正常工作了.我可以通过使用self.Refresh(True)来显示内容，但只有在不使用self.panel.Destroy()方法的情况下，它才能起作用.那么，关于如何摆脱按钮和文本的任何建议(有关添加的内容，请参见displayContents方法)?
Okay I almost have it working. I can get it to display the contents by using self.Refresh(True) but it only works if I dont use the self.panel.Destroy() method. So, any suggestions on how to get rid of the buttons and the text(see the displayContents method for what I added)?
我知道了.我所做的是，将其添加到displayContents方法中.不过，这可能不是最好的方法.
I got it to work. What I did was, I added this to my displayContents method. This probably isnt the best way to do this though.
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)
推荐答案
我认为问题是您
- 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 的某个位置，然后调用 self.panel.Destroy(); self.panel = wx.Panel(self)每次.
I would suggest you to save the old panel somewhere at self.panel and call self.panel.Destroy();self.panel = wx.Panel(self) on each time.
更好的选择是使用 wx.ListCtrl ，捕获 EVT_LIST_ITEM_ACTIVATED ，然后删除列表并在其中填充项目:
The better option is to use wx.ListCtrl, catch EVT_LIST_ITEM_ACTIVATED and then delete the list and fill it with the items:
__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风格表示方法和类也是CamelCased，只知道:)
BTW, the wx style indicates that methods and classes are also CamelCased, just that you know :)
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