在Linux下,我的C++应用程序使用fork()和execv()来启动多个OpenOffice实例,以便查看一些powerpoint幻灯片。这部分起作用了。
接下来,我希望能够将OpenOffice窗口移动到显示器上的特定位置。我可以用XMoveResizeWindow()函数来做这件事,但是我需要找到每个实例的窗口。
我有每个实例的进程ID,如何从中找到X11窗口?
更新-多亏了安迪的建议,我做到了这一点。我在这里发布了代码,以便与Stack Overflow社区共享。
不幸的是,Open Office似乎没有设置_NET_WM_PID属性,所以这并不能最终解决我的问题,但它确实回答了这个问题。
// Attempt to identify a window by name or attribute.
// by Adam Pierce <adam@doctort.org>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <iostream>
#include <list>
using namespace std;
class WindowsMatchingPid
{
public:
WindowsMatchingPid(Display *display, Window wRoot, unsigned long pid)
: _display(display)
, _pid(pid)
{
// Get the PID property atom.
_atomPID = XInternAtom(display, "_NET_WM_PID", True);
if(_atomPID == None)
{
cout << "No such atom" << endl;
return;
}
search(wRoot);
}
const list<Window> &result() const { return _result; }
private:
unsigned long _pid;
Atom _atomPID;
Display *_display;
list<Window> _result;
void search(Window w)
{
// Get the PID for the current Window.
Atom type;
int format;
unsigned long nItems;
unsigned long bytesAfter;
unsigned char *propPID = 0;
if(Success == XGetWindowProperty(_display, w, _atomPID, 0, 1, False, XA_CARDINAL,
&type, &format, &nItems, &bytesAfter, &propPID))
{
if(propPID != 0)
{
// If the PID matches, add this window to the result set.
if(_pid == *((unsigned long *)propPID))
_result.push_back(w);
XFree(propPID);
}
}
// Recurse into child windows.
Window wRoot;
Window wParent;
Window *wChild;
unsigned nChildren;
if(0 != XQueryTree(_display, w, &wRoot, &wParent, &wChild, &nChildren))
{
for(unsigned i = 0; i < nChildren; i++)
search(wChild[i]);
}
}
};
int main(int argc, char **argv)
{
if(argc < 2)
return 1;
int pid = atoi(argv[1]);
cout << "Searching for windows associated with PID " << pid << endl;
// Start with the root window.
Display *display = XOpenDisplay(0);
WindowsMatchingPid match(display, XDefaultRootWindow(display), pid);
// Print the result.
const list<Window> &result = match.result();
for(list<Window>::const_iterator it = result.begin(); it != result.end(); it++)
cout << "Window #" << (unsigned long)(*it) << endl;
return 0;
}
发布于 2010-05-03 02:42:26
检查/proc/PID/environ是否包含名为WINDOWID的变量
发布于 2012-11-21 05:00:52
参加派对有点晚了。然而,早在2004年,Harald Welte发布了一段代码片段,它通过LD_PRELOAD包装了XCreateWindow()调用,并将进程id存储在_NET_WM_PID中。这确保创建的每个窗口都有一个PID条目。
发布于 2014-12-15 22:22:54
尝试安装xdotool
,然后:
#!/bin/bash
# --any and --name present only as a work-around, see: https://github.com/jordansissel/xdotool/issues/14
ids=$(xdotool search --any --pid "$1" --name "dummy")
我确实有很多身份证。我使用seturgent
程序在一个长命令完成后将终端窗口设置为紧急窗口。我只是循环遍历从xdotool
获得的所有I,并对它们运行seturgent
。
https://stackoverflow.com/questions/151407
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