C语言或Go语言如何获取系统剪贴板中的选中文本？

<code class="c">#include <X11/Xlib.h>
#include <stdio.h>
#include <stdlib.h>

int main() {
    Display *display = XOpenDisplay(NULL);
    if (display == NULL) {
        fprintf(stderr, "无法打开显示器\n");
        return 1;
    }

    Atom selection = XInternAtom(display, "PRIMARY", False);
    Atom target = XInternAtom(display, "UTF8_STRING", False); // 或其他合适的文本类型
    XEvent event;
    XSelectionRequestEvent request;

    XConvertSelection(display, selection, target, selection, DefaultRootWindow(display), CurrentTime);

    while (1) {
        XNextEvent(display, &event);
        if (event.type == SelectionNotify) {
            if (event.xselection.selection == selection && event.xselection.property != None) {
                unsigned char *data;
                int actual_format;
                unsigned long nitems, bytes_after;
                XGetWindowProperty(display, DefaultRootWindow(display), event.xselection.property, 0, 1024, False, AnyPropertyType, &actual_format, &nitems, &bytes_after, &event.xselection.property, &data);
                if (data != NULL) {
                    printf("选中文本为: %s\n", (char*)data);
                    XFree(data);
                }
                break;
            }
        }
    }

    XCloseDisplay(display);
    return 0;
}</code>