G_DBUS_OBJECT_SKELETON_FLAGS_NONE undeclared (first use in this function); did you mean ‘G_DBUS_INTERFACE_SKELETON_FLAGS_NONE’?

抱歉，我之前的回答中有一个错误。正确的标志应该是 `GUS_INTERFACE_SKELETON_FLAGS_NONE`，而不是 `G_DBUS_OBJECT_SKELETON_FLAGS_NONE`。

以下是修后的示例代码：

#include <stdio.h>
#include <glib.h>
#include <gio/gio.h>

// D-Bus方法回调函数
static gboolean on_capture_screen(GDBusConnection *connection, const gchar *sender, const gchar *object_path,
                                  const gchar *interface_name, const gchar *method_name, GVariant *parameters,
                                  GDBusMethodInvocation *invocation, gpointer user_data)
{
    // 在这里实现抓图逻辑
    printf("Capture screen method called!\n");

    // 假设抓图成功，发送信号通知完成
    GDBusMessage *signal = g_dbus_message_new_signal(object_path, "org.dharkael.kylinscreenshot", "CaptureScreenCompleted");
    g_dbus_connection_send_message(connection, signal, G_DBUS_SEND_MESSAGE_FLAGS_NONE, NULL, NULL);
    g_object_unref(signal);

    g_dbus_method_invocation_return_value(invocation, NULL);

    return TRUE;
}

int main(int argc, char *argv[])
{
    // 初始化 GMainLoop
    GMainLoop *loop = g_main_loop_new(NULL, FALSE);

    // 获取 D-Bus 连接
    GDBusConnection *connection = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, NULL);

    // 注册 D-Bus 服务和方法
    guint registrationId = g_dbus_connection_register_service(connection,
                                                              "org.dharkael.kylinscreenshot",
                                                              "/org/dharkael/kylinscreenshot",
                                                              NULL,
                                                              NULL,
                                                              NULL,
                                                              NULL);
    g_dbus_connection_register_object(connection,
                                      "/org/dharkael/kylinscreenshot",
                                      g_dbus_interface_skeleton_new(),
                                      G_DBUS_INTERFACE_SKELETON_FLAGS_NONE,  // 使用正确的标志位
                                      NULL,
                                      NULL,
                                      NULL);

    // 设置 D-Bus 方法回调函数
    g_signal_connect(connection, "g-method-call", G_CALLBACK(on_capture_screen), NULL);

    // 运行 GMainLoop
    g_main_loop_run(loop);

    // 清理资源
    g_bus_unown_name(registrationId);
    g_object_unref(connection);
    g_main_loop_unref(loop);

    return 0;
}

非常抱歉给您带来困扰，感谢您的指正！如果您还有其他问题，请随时提问。