xlib查找window并且置顶代码

xlib查找window并且置顶代码

/*
    xraise 0.2 - A small tool to send a X application
                     to the foreground
    Copyright 2010 - socol
    Copyright 2007 - Hd Luc
*/
/**
 * gcc -g -o xraise xraise.c `pkg-config gtk+-2.0 --cflags --libs gthread-2.0 x11`
 */



#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

/* "borrowed" from xwininfo/dsimple.c */

Window Window_With_Name(dpy, top, name)
     Display *dpy;
     Window top;
     char *name;
{
    Window *children, dummy;
    unsigned int nchildren;
    int i;
    Window w=0;
    char *window_name;
        XClassHint *class_hint;
    class_hint = XAllocClassHint();
    int ret = 0;
#if 0
    // find by WM_NAME(STRING) = "window - tilte"
    if (XFetchName(dpy, top, &window_name) && (strstr(window_name, name) == window_name))
      return(top);
#else
    // find by WM_CLASS(STRING) = "mywindow", "MyWindow"
    if (XGetClassHint(dpy, top, class_hint)) {
        if (strstr(class_hint->res_name, name) == class_hint->res_name) {
            ret = 1;
        }
        if (!class_hint->res_class) {
            XFree(class_hint->res_class);
            XFree(class_hint->res_name);
        }
        if (ret)
            return(top);
    }
#endif

    if (!XQueryTree(dpy, top, &dummy, &dummy, &children, &nchildren))
      return(0);

    for (i=0; i<nchildren; i++)
        {
        w = Window_With_Name(dpy, children[i], name);
        if (w)
          break;
    }
    if (children) XFree ((char *)children);
      return(w);
}

int main(int argc, char **argv)
{
    Window window;
    Display *dpy;

    if (argc < 2)
    {
        fprintf(stderr, "Usage: %s window-name\n", argv[0]);
        exit(1);
    }

    dpy = XOpenDisplay(":0");
    if (!dpy)
    {
        fprintf(stderr, "Cannot open display.\n");
        exit(1);
    }

    window = Window_With_Name(dpy, DefaultRootWindow(dpy), argv[1]);
    if (!window)
    {
        fprintf(stderr, "Cannot find a window by that name.\n");
        exit(1);
    }

    XSetInputFocus(dpy, window, RevertToPointerRoot, CurrentTime);

    if(!XRaiseWindow(dpy, window))
    {
        fprintf(stderr, "XRaiseWindow error?\n");
        exit(1);
    }
    XCloseDisplay(dpy);
    return 0;
}