xlib - xinit 窗口始终位于顶部 _NET_WM_STATE _NET_WM_STATE_ABOVE

Question

我使用fedora 14系统。
我在使用starx启动桌面系统时，创建了一个Xlib程序，代码如下:

    Atom wmStateAbove = XInternAtom(display, "_NET_WM_STATE_ABOVE",1);
    if(wmStateAbove != None)
            printf("_NET_WM_STATE_ABOVE has atom of %ld \n", (long)wmStateAbove);
    else
            printf("ERROR: can't find atom for _NET_WM_STATE_Above! \n");

    Atom wmNetWmState = XInternAtom(display, "_NET_WM_STATE", 1);
    if(wmNetWmState != None)
            printf("_NET_WM_STATE has atom of %ld \n", (long)wmNetWmState);
    else
            printf("ERROR: can't find atom for _NET_WM_STATE! \n");



    if(wmStateAbove != None)
    {
            printf("======\n");
            XClientMessageEvent xclient;
            memset(&xclient, 0, sizeof(xclient));

            xclient.type = ClientMessage;
            xclient.window = win;
            xclient.message_type = wmNetWmState;
            xclient.format = 32;
            xclient.data.l[0] = 1;
            xclient.data.l[1] = wmStateAbove;
            xclient.data.l[2] = 1;
            xclient.data.l[3] = 1;
            xclient.data.l[4] = 0;

            printf(" default Window %d \n", DefaultRootWindow(display));
            XSendEvent(display,
            DefaultRootWindow(display), False,
            SubstructureRedirectMask | SubstructureNotifyMask,
            (XEvent*)&xclient);

可以创建放置在顶部的窗口
但是如果我使用xinit启动桌面系统，xinitrc脚本如下:

enter image description here

程序无法正常运行，提示_NET_WM_STATE 和_NET_WM_STATE_ABOVE 找不到，窗口不能放在最上面，是什么原因？

Answer 1

如果此代码在窗口管理器启动并准备好对消息作出 react 之前执行，则在启动时执行此操作可能会很棘手。
事件中也有错误； xclient.data.l[2] 应该是 0，而不是 1。https://specifications.freedesktop.org/wm-spec/wm-spec-latest.html#idm46035372536800