Question

我试图管理包含＆＃34;其他文件的文件＆＃34; （许多小文件存储在几个大文件中）。＆＃34;引擎＆＃34;效果很好，但我有一些GUI问题。由于处理时间的原因，某些功能是线程化的，例如删除或添加文件。这是代码的一部分：

import gtk, os, data, time, threading, subprocess
import Image, re
gtk.gdk.threads_init()

#some unimportant code - creating window with some buttons and IconView item (to show elements in currently opened directory)
    def _del_thread(self): #deletes items selected in gtk.IconView
        dl, fl = self.items #self.items stores selected dirs and files
        for d in dl:
            self.changestatus('Deleting: '+data.dirs[d][0]+'...') #prints the text at StatusBar (data.dirs[d][0] is a filename)
            data.RemoveDir(d) #recursively removes all content in directory d
        for f in fl:
            self.changestatus('Usuwanie pliku: '+data.files[f][0]+'...')
            data.PopFile(f) #removes single file
        self.changestatus('') #clears the StatusBar
        self.refresh() #some elements are deleted - refresh IconView

    def _add_thread(self, fl): #adds files listed in fl
        for f in fl:
            self.changestatus('Adding: '+f[-50:]+'...')
            #some unimportant code (recognizing file's extension and generating a thumbnail
            data.PutFile(f, thumb, self.dir) #adds the file with generated thumbnail to currently opened directory (self.dir)
        self.changestatus('') #clears the StatusBar
        self.refresh() #some elements are added - refresh IconView

    def Delete(self, widget): #triggered by clicking a context-menu item
        md = gtk.MessageDialog(None, gtk.DIALOG_DESTROY_WITH_PARENT, \
                               gtk.MESSAGE_QUESTION, gtk.BUTTONS_OK_CANCEL, \
                               "Do you want to remove selected items?")
        res = md.run()
        md.destroy()
        if res == gtk.RESPONSE_OK:
            t = threading.Thread(target=self._del_thread) #start new thread
            t.start()

    def Add(self, widget): #triggered by clicking a context-menu item
        chooser = gtk.FileChooserDialog(title='Select files to add...',action=gtk.FILE_CHOOSER_ACTION_OPEN,
                                        buttons=(gtk.STOCK_CANCEL,gtk.RESPONSE_CANCEL,gtk.STOCK_OPEN,gtk.RESPONSE_OK))
        chooser.set_select_multiple(True)
        response = chooser.run()
        if response == gtk.RESPONSE_OK:
            #star new thread with selected files' list as an argument
            t = threading.Thread(target=self._add_thread, args=(chooser.get_filenames(),))
            t.start()
        chooser.destroy()

还有一个在线程中运行的第三个函数，但它并不重要。它很快（约1秒），总是执行得很好，永远不会冻结窗口。其他两个（如上所示）有时执行得很好，有时不执行。例如，我在FileChooserDialog中选择一些文件，添加线程开始，StatusBar现在连续显示文件正在添加，最后窗口冻结。之后，窗口看起来像那样（抱歉抛光描述）： pygtk window + threading, window freezes 为什么线程有时会毫无问题地处理，有时候不会？

祝你好运， mopsiok

Answer 1

我想我发现了这个问题。根据{{3}}，我必须在线程中的每个gtk函数之前添加gtk.threads_enter（），然后在它之后添加gtk.threads_close（）。现在它似乎工作正常。

PyGTK +线程;窗户意外冻结

1 个答案: