blocks|key|1648723|text|这是一个基于GTK的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1648724|screen+=+gtk.gdk.screen_get_default()
root+=+screen.get_root_window()
root.set_events(gtk.gdk.SUBSTRUCTURE_MASK)
root.add_filter(event_filter)

def+event_filter(event,+user_data):
++++++++#+process+event
++++++++return+gtk.gdk.FILTER_CONTINUE|code-block|syntax|javascript|1648725|显然，SUBSTRUCTURE_MASK包含通常与工作空间切换相关的事件。尽管如此，这种解决方案感觉有点笨拙。有什么想法吗？|1648726|你好，菲利普|1648727|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Here is a GTK based solution:

<pre><code>screen = gtk.gdk.screen_get_default()
root = screen.get_root_window()
root.set_events(gtk.gdk.SUBSTRUCTURE_MASK)
root.add_filter(event_filter)

def event_filter(event, user_data):
 # process event
 return gtk.gdk.FILTER_CONTINUE
</code></pre>

Apparently, the SUBSTRUCTURE_MASK contains events which are typically associated with workspace switches. Nevertheless, this solution feels a bit awkward. Any ideas?

Greets,
Philip

blocks|key|3057174|text|您可能想看看libwnck，或者它的Python绑定。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3057175|entityMap|0|LINK|mutability|MUTABLE|url|http://library.gnome.org/devel/libwnck/stable/^0|6|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You may want to take a look at <a href="http://library.gnome.org/devel/libwnck/stable/" rel="nofollow noreferrer">libwnck</a>, or possibly its Python bindings.

blocks|key|1648751|text|通常，桌面更改是通过根窗口上的属性更改来通知客户端的，因此请监听PROPERTY_CHANGE_MASK而不是SUBSTRUCTURE_MASK；这会给您带来更少的噪音。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1648752|至于哪些属性发生了变化，我怀疑这在不同的窗口管理器/桌面/其他东西中是不同的；我正在运行ubuntu/unity，当我在桌面切换前后执行"xprop+-root“，并比较结果时，我发现发生变化的属性是_NET_DESKTOP_VIEWPORT。|1648753|除此之外，我得到的主要噪音是根窗口的_NET_ACTIVE_WINDOW属性每次活动窗口更改时都会更改。|1648754|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Typically a desktop change is announced to clients by a property change on the root window,
so listen for PROPERTY_CHANGE_MASK instead of SUBSTRUCTURE_MASK;
that will give you a lot less noise.

As for which property changes, I suspect that differs among
different windowmanagers/desktops/whatever; I'm running ubuntu/unity and
when I do "xprop -root" before and after a desktop switch, and diff the results,
I find that the property that changed is _NET_DESKTOP_VIEWPORT.

The primary noise I get in addition is that the root window's
_NET_ACTIVE_WINDOW property changes each time the active window changes.

blocks|key|343884|text|还有一个改进:使用Don+Hatch+says而不是GDK_SUBSTRUCTURE_MASK，使用GDK_PROPERTY_CHANGE_MASK。此外，您感兴趣的确切属性是_NET_CURRENT_DESKTOP。它是一个32位的属性，它的值是一个从0开始的桌面数字。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|343885|这是一个完整的可编译和可运行的示例，它捕捉桌面切换的时刻，并在切换之后报告当前桌面的数量。这个例子是用C语言写的，因为我的Python不太流利，我希望你能翻译一下。|343886|#include+<gtk/gtk.h>
#include+<gdk/gdkx.h>

GdkFilterReturn+propertyChangeFilter(GdkXEvent*+xevent,+GdkEvent*e,+gpointer+data)
{
++++const+XPropertyEvent*const+propEvt=(const+XPropertyEvent*)xevent;

++++if(propEvt->type!=PropertyNotify)
++++++++return+GDK_FILTER_CONTINUE;
++++if(propEvt->state!=PropertyNewValue)
++++++++return+GDK_FILTER_CONTINUE;
++++const+Atom+NET_CURRENT_DESKTOP=(Atom)data;
++++if(propEvt->atom!=NET_CURRENT_DESKTOP)
++++++++return+GDK_FILTER_CONTINUE;

++++fprintf(stderr,+"Desktop+change+detected\n");
++++Atom+actualType;
++++int+actualFormat;
++++unsigned+long+nitems,+remainingBytes;
++++unsigned+char*+prop;
++++if(XGetWindowProperty(propEvt->display,+propEvt->window,+propEvt->atom,
++++++++++++++++++++++++++0,+1,+False,+AnyPropertyType,
++++++++++++++++++++++++++&actualType,+&actualFormat,+&nitems,+&remainingBytes,
++++++++++++++++++++++++++&prop)+!=+Success)
++++{
++++++++fprintf(stderr,+"Failed+to+get+current+desktop+number\n");
++++++++return+GDK_FILTER_CONTINUE;
++++}
++++if(nitems!=1+%7C%7C+remainingBytes!=0+%7C%7C+actualFormat!=32)
++++{
++++++++XFree(prop);
++++++++fprintf(stderr,+"Unexpected+number+of+items+(%25lu)+or+remaining+bytes+(%25lu)"
++++++++++++++++++++++++"+or+format+(%25d)\n",+nitems,+remainingBytes,+actualFormat);
++++++++return+GDK_FILTER_CONTINUE;
++++}
++++guint32+value;
++++memcpy(&value,+prop,+sizeof+value);
++++XFree(prop);
++++fprintf(stderr,+"Current+desktop:+%25u\n",+value);

++++return+GDK_FILTER_CONTINUE;
}

int+main(int+argc,+char**+argv)
{
++++gtk_init(&argc,&argv);

++++GdkDisplay*const+gdkDisplay=gdk_display_get_default();
++++Display*const+display=gdk_x11_display_get_xdisplay(gdkDisplay);
++++const+Atom+atom=XInternAtom(display,+"_NET_CURRENT_DESKTOP",+True);
++++GdkWindow*const+root=gdk_get_default_root_window();
++++gdk_window_set_events(root,+GDK_PROPERTY_CHANGE_MASK);
++++gdk_window_add_filter(root,+propertyChangeFilter,+(gpointer)atom);

++++gtk_main();
}|code-block|syntax|javascript|343887|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/22421858/673852^0|Q|L|1E|O|2G|K|9|E|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

One more refinement: instead of <code>GDK_SUBSTRUCTURE_MASK</code>, as <a href="https://stackoverflow.com/a/22421858/673852">Don Hatch says</a>, use <code>GDK_PROPERTY_CHANGE_MASK</code>. Moreover, the exact property that you're interested in is <code>_NET_CURRENT_DESKTOP</code>. It's a 32-bit property, whose value is a 0-based desktop number.
Here's the complete compilable and runnable example that catches the moment of desktop switch and reports the number of current desktop after that. The example is in C since I'm not fluent in Python, I hope you can translate.
<pre class="lang-c prettyprint-override"><code>#include &lt;gtk/gtk.h&gt;
#include &lt;gdk/gdkx.h&gt;

GdkFilterReturn propertyChangeFilter(GdkXEvent* xevent, GdkEvent*e, gpointer data)
{
 const XPropertyEvent*const propEvt=(const XPropertyEvent*)xevent;

 if(propEvt-&gt;type!=PropertyNotify)
 return GDK_FILTER_CONTINUE;
 if(propEvt-&gt;state!=PropertyNewValue)
 return GDK_FILTER_CONTINUE;
 const Atom NET_CURRENT_DESKTOP=(Atom)data;
 if(propEvt-&gt;atom!=NET_CURRENT_DESKTOP)
 return GDK_FILTER_CONTINUE;

 fprintf(stderr, &quot;Desktop change detected\n&quot;);
 Atom actualType;
 int actualFormat;
 unsigned long nitems, remainingBytes;
 unsigned char* prop;
 if(XGetWindowProperty(propEvt-&gt;display, propEvt-&gt;window, propEvt-&gt;atom,
 0, 1, False, AnyPropertyType,
 &amp;actualType, &amp;actualFormat, &amp;nitems, &amp;remainingBytes,
 &amp;prop) != Success)
 {
 fprintf(stderr, &quot;Failed to get current desktop number\n&quot;);
 return GDK_FILTER_CONTINUE;
 }
 if(nitems!=1 || remainingBytes!=0 || actualFormat!=32)
 {
 XFree(prop);
 fprintf(stderr, &quot;Unexpected number of items (%lu) or remaining bytes (%lu)&quot;
 &quot; or format (%d)\n&quot;, nitems, remainingBytes, actualFormat);
 return GDK_FILTER_CONTINUE;
 }
 guint32 value;
 memcpy(&amp;value, prop, sizeof value);
 XFree(prop);
 fprintf(stderr, &quot;Current desktop: %u\n&quot;, value);

 return GDK_FILTER_CONTINUE;
}

int main(int argc, char** argv)
{
 gtk_init(&amp;argc,&amp;argv);

 GdkDisplay*const gdkDisplay=gdk_display_get_default();
 Display*const display=gdk_x11_display_get_xdisplay(gdkDisplay);
 const Atom atom=XInternAtom(display, &quot;_NET_CURRENT_DESKTOP&quot;, True);
 GdkWindow*const root=gdk_get_default_root_window();
 gdk_window_set_events(root, GDK_PROPERTY_CHANGE_MASK);
 gdk_window_add_filter(root, propertyChangeFilter, (gpointer)atom);

 gtk_main();
}
</code></pre>

I'm looking for a way to determine if the user switches virtual desktops under X11.

I'm using Python with X11 libraries and PyGTK. I found some working examples in C, but I lack the expertise to translate them into Python, and I read the source code of several X11 pager applications (fbpanel, pypanel), but I can't seem to find what I'm looking for.

Do I have to register for a signal? Using X11 or GTK?
Do I have to busy-wait?

I'm completely new to both X11 and GTK, so any hints/help would be greatly appreciated.

Greets,
Philip

PS: My current efforts can be found <a href="http://code.google.com/p/neap/" rel="nofollow noreferrer">here</a>.

Python/X11: find out if user switches virtual desktops

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

教程

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云智能顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

EdgeOne AI 安全实战专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

聚焦“写作效率、视觉美观与运行性能”三方面进行全面升级，为您提供更高效、稳定的创作环境

社区富文本&Markdown编辑器全新改版上线，欢迎大家体验!

诚挚邀请您参与本次调研，分享您的真实使用感受与建议。您的反馈至关重要，感谢您的支持与参与！

社区新版编辑器体验调研

我正在寻找一种方法来确定用户是否在X11下切换虚拟桌面。我将Python与X11库和PyGTK一起使用。我找到了一些用C语言编写的工作示例，但我缺乏将它们转换成Python的专业知识，并且我阅读了几个X11分页应用程序(fbpanel、pypanel)的源代码，但似乎找不到我要找的东西。我需要注册才能收到信号吗？使用X11还是GTK？我是不是得忙着-等等？我对X11和GTK都是全新的，所以任何提示

问Python/X11:了解用户是否切换虚拟桌面
EN

回答 4

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Python/X11:了解用户是否切换虚拟桌面EN

回答 4

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Python/X11:了解用户是否切换虚拟桌面
EN