<p>不要使用<code>get_property</code>,而是使用<code>get_full_property</code>。它隐藏了<code>XGetWindowProperty</code>的API的奇怪方面。在</p>
<p>我不得不浏览pythonxlib源代码以找到它的使用示例,但下面是我最后编写的一个简化版本,以使用它。在</p>
<p>来自<a href="https://specifications.freedesktop.org/wm-spec/1.3/ar01s03.html" rel="nofollow noreferrer">this spec</a>的<code>_NET_CLIENT_LIST</code>的定义:</p>
<pre><code>_NET_CLIENT_LIST, WINDOW[]/32
</code></pre>
<p>…以及来自<a href="https://specifications.freedesktop.org/wm-spec/1.3/ar01s05.html" rel="nofollow noreferrer">this spec</a>的<code>_NET_WM_STRUT_PARTIAL</code>的定义:</p>
^{pr2}$
<p>…转换为以下Python代码:</p>
<pre class="lang-py prettyprint-override"><code>from collections import namedtuple
from Xlib.display import Display
from Xlib import Xatom
display = Display()
root = display.screen(0)['root']
StrutPartial = namedtuple('StrutPartial', 'left right top bottom'
' left_start_y left_end_y right_start_y right_end_y'
' top_start_x, top_end_x, bottom_start_x bottom_end_x')
def query_property(win, name, prop_type, format_size, empty=None):
if isinstance(win, int):
# Create a Window object for the Window ID
win = display.create_resource_object('window', win)
if isinstance(name, str):
# Create/retrieve the X11 Atom for the property name
name = display.get_atom(name)
result = win.get_full_property(name, prop_type)
if result and result.format == format_size:
return result.value
return empty
window_ids = ([root.id] +
list(query_property(root, '_NET_CLIENT_LIST', Xatom.WINDOW, 32, [])))
for wid in window_ids:
result = query_property(wid, '_NET_WM_STRUT_PARTIAL', Xatom.CARDINAL, 32)
if result:
# Toss it in a namedtuple to avoid needing opaque numeric indexes
strut = StrutPartial(*result)
print(strut)
</code></pre>
<p>…打印此示例输出:</p>
<pre><code>StrutPartial(left=0, right=0, top=0, bottom=30, left_start_y=0, left_end_y=0, right_start_y=0, right_end_y=0, top_start_x=0, top_end_x=0, bottom_start_x=3200, bottom_end_x=4479)
StrutPartial(left=0, right=0, top=0, bottom=30, left_start_y=0, left_end_y=0, right_start_y=0, right_end_y=0, top_start_x=0, top_end_x=0, bottom_start_x=1280, bottom_end_x=3199)
StrutPartial(left=0, right=0, top=0, bottom=0, left_start_y=0, left_end_y=0, right_start_y=0, right_end_y=0, top_start_x=0, top_end_x=0, bottom_start_x=0, bottom_end_x=0)
StrutPartial(left=0, right=0, top=0, bottom=30, left_start_y=0, left_end_y=0, right_start_y=0, right_end_y=0, top_start_x=0, top_end_x=0, bottom_start_x=0, bottom_end_x=1279)
</code></pre>
<p>(<code>result.value</code>是12个32位整数的<code>array.array</code>,因为规范要求将<code>_NET_WM_STRUT_PARTIAL</code>设置为<code>CARDINAL[12]/32</code>。您可以迭代或索引<code>array.array</code>,方法与普通的<code>list</code>或{<cd12>}相同,但是<code>namedtuple</code>是使用命名属性的简单、舒适的方法。)</p>