X11：_NET_FRAME_EXTENTS窗口属性。XCB的回报不一致

#include <xcb/xcb.h>
#include <xcb/xcb_atom.h>
#include <stdio.h>
#include <stdlib.h>

void get_net_frame_extents(xcb_connection_t *conn, xcb_window_t window) {
    xcb_intern_atom_cookie_t cookie = xcb_intern_atom(conn, 0, strlen("_NET_FRAME_EXTENTS"), "_NET_FRAME_EXTENTS");
    xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, cookie, NULL);

    if (!reply) {
        fprintf(stderr, "Failed to get _NET_FRAME_EXTENTS atom.\n");
        return;
    }

    xcb_atom_t net_frame_extents = reply->atom;
    free(reply);

    xcb_get_property_cookie_t prop_cookie = xcb_get_property(conn, 0, window, net_frame_extents, XCB_ATOM_CARDINAL, 0, 4);
    xcb_get_property_reply_t *prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);

    if (!prop_reply) {
        fprintf(stderr, "Failed to get _NET_FRAME_EXTENTS property.\n");
        return;
    }

    if (xcb_get_property_value_length(prop_reply) == 4 * sizeof(uint32_t)) {
        uint32_t *extents = (uint32_t *)xcb_get_property_value(prop_reply);
        printf("Left: %u, Right: %u, Top: %u, Bottom: %u\n", extents[0], extents[1], extents[2], extents[3]);
    } else {
        fprintf(stderr, "Unexpected property value length.\n");
    }

    free(prop_reply);
}

int main() {
    xcb_connection_t *conn = xcb_connect(NULL, NULL);
    if (xcb_connection_has_error(conn)) {
        fprintf(stderr, "Failed to connect to X server.\n");
        return -1;
    }

    // Replace with the actual window ID you want to query
    xcb_window_t window = 0x02000007;

    get_net_frame_extents(conn, window);

    xcb_disconnect(conn);
    return 0;
}