在 Ubuntu Linux/Gnome 上,我正在尝试使用 python 的 wnck 绑定(bind)来获取所有打开的窗口的列表。
我的代码是这样的:
#! /usr/bin/python
from pprint import pprint
import wnck
screen = wnck.screen_get_default()
pprint(screen.get_windows())
import pdb ; pdb.set_trace()
pprint(screen.get_windows())
输出是这样的:
** (windowlist.py:4501): WARNING **: Trying to register gtype 'WnckWindowState' as enum when in fact it is of type 'GFlags'
** (windowlist.py:4501): WARNING **: Trying to register gtype 'WnckWindowActions' as enum when in fact it is of type 'GFlags'
** (windowlist.py:4501): WARNING **: Trying to register gtype 'WnckWindowMoveResizeMask' as enum when in fact it is of type 'GFlags'
[]
> /home/rory/personal/diriu/windowlist.py(12)<module>()
-> pprint(screen.get_windows())
(Pdb) c
[<wnck.Window object at 0xb61db0cc (WnckWindow at 0x992c000)>,
<wnck.Window object at 0xb61db0f4 (WnckWindow at 0x992c0a8)>,
<wnck.Window object at 0xb61db11c (WnckWindow at 0x992c150)>,
<wnck.Window object at 0xb61db144 (WnckWindow at 0x992c1f8)>,
<wnck.Window object at 0xb61db16c (WnckWindow at 0x992c2a0)>,
<wnck.Window object at 0xb61db194 (WnckWindow at 0x992c348)>,
<wnck.Window object at 0xb61db1bc (WnckWindow at 0x992c3f0)>,
<wnck.Window object at 0xb61db1e4 (WnckWindow at 0x992c498)>,
<wnck.Window object at 0xb61db20c (WnckWindow at 0x992c540)>,
<wnck.Window object at 0xb61db234 (WnckWindow at 0x992c5e8)>,
<wnck.Window object at 0xb61db25c (WnckWindow at 0x992c690)>,
<wnck.Window object at 0xb61db284 (WnckWindow at 0x992c738)>]
第一个 get_windows()
调用返回一个空列表 []
。第二个 get_windows()
调用返回打开的窗口列表。在 pdb
中,我只按 c
继续,什么都不做(在 pdb 中)。
如果我注释掉 pdb
,两个 get_windows()
调用都会返回 []
。如果我在 pdb 之前多次重复 get_windows()
调用,则什么也没有。如果我在 pdb 之后多次重复 get_windows()
调用,我会不断获得完整列表。
为什么此调用仅在空 pdb 后有效?如何在没有 pdb 的情况下使其工作?
最佳答案
文件 so-wnck.py(来自 How might I grab all windows with a certain word in their titles?)
import pygtk
pygtk.require('2.0')
import gtk
import wnck
screen = wnck.screen_get_default()
while gtk.events_pending():
gtk.main_iteration()
windows = screen.get_windows()
print (windows)
python so-wnck.py
** (so-wnck.py:2367): WARNING **: Trying to register gtype 'WnckWindowState' as enum when in fact it is of type 'GFlags'
** (so-wnck.py:2367): WARNING **: Trying to register gtype 'WnckWindowActions' as enum when in fact it is of type 'GFlags'
** (so-wnck.py:2367): WARNING **: Trying to register gtype 'WnckWindowMoveResizeMask' as enum when in fact it is of type 'GFlags'
[<wnck.Window object at 0xb7566694 (WnckWindow at 0x97c51f8)>,
<wnck.Window object at 0xb75666bc (WnckWindow at 0x97c52a0)>,
<wnck.Window object at 0xb75666e4 (WnckWindow at 0x97c5348)>,
<wnck.Window object at 0xb756670c (WnckWindow at 0x97c53f0)>,
<wnck.Window object at 0xb7566734 (WnckWindow at 0x97c5498)>,
<wnck.Window object at 0xb756675c (WnckWindow at 0x97c5540)>,
<wnck.Window object at 0xb7566784 (WnckWindow at 0x97c55e8)>]
关于python wnck 在 pdb.set_trace() 之前不返回任何数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5352027/