g_object_new_with_properties用不了

`g_object_new_with_properties` 是 GLib 中用于创建 GObject 的函数之一，它可以接受一个以 `NULL` 结尾的 `GObjectProperty` 数组作为参数，用于设置 GObject 的属性。如果无法使用该函数，可能是因为您没有包含必要的头文件，或者没有正确地链接 GLib 库。

以下是一个简单的示例，演示如何使用 `g_object_new_with_properties` 函数创建一个 GObject：

#include <glib-object.h>

typedef struct _MyObject MyObject;

struct _MyObject {
  GObject parent;
  guint property1;
  gchar *property2;
};

enum {
  PROP_0,
  PROP_PROPERTY_1,
  PROP_PROPERTY_2,
  N_PROPERTIES
};

static GParamSpec *obj_properties[N_PROPERTIES] = {NULL, };

static void my_object_set_property (GObject *object,
                                    guint property_id,
                                    const GValue *value,
                                    GParamSpec *pspec)
{
  MyObject *self = MY_OBJECT (object);

  switch (property_id) {
    case PROP_PROPERTY_1:
      self->property1 = g_value_get_uint (value);
      break;

    case PROP_PROPERTY_2:
      g_free (self->property2);
      self->property2 = g_value_dup_string (value);
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
  }
}

static void my_object_get_property (GObject *object,
                                    guint property_id,
                                    GValue *value,
                                    GParamSpec *pspec)
{
  MyObject *self = MY_OBJECT (object);

  switch (property_id) {
    case PROP_PROPERTY_1:
      g_value_set_uint (value, self->property1);
      break;

    case PROP_PROPERTY_2:
      g_value_set_string (value, self->property2);
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
  }
}

static void my_object_class_init (MyObjectClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

  gobject_class->set_property = my_object_set_property;
  gobject_class->get_property = my_object_get_property;

  obj_properties[PROP_PROPERTY_1] =
    g_param_spec_uint ("property1",
                       "Property 1",
                       "Description of property 1",
                       0,
                       G_MAXUINT,
                       0,
                       G_PARAM_READWRITE);

  obj_properties[PROP_PROPERTY_2] =
    g_param_spec_string ("property2",
                         "Property 2",
                         "Description of property 2",
                         NULL,
                         G_PARAM_READWRITE);

  g_object_class_install_properties (gobject_class,
                                      N_PROPERTIES,
                                      obj_properties);
}

static void my_object_init (MyObject *self)
{
  self->property1 = 0;
  self->property2 = NULL;
}

int main (int argc, char *argv[])
{
  g_type_init ();

  GValue property_values[3] = {0, };

  g_value_init (&property_values[0], G_TYPE_UINT);
  g_value_set_uint (&property_values[0], 42);

  g_value_init (&property_values[1], G_TYPE_STRING);
  g_value_set_string (&property_values[1], "Hello world");

  MyObject *obj = g_object_new_with_properties (MY_TYPE_OBJECT,
                                                 property_values);

  g_print ("Property 1: %u\n", my_object_get_property1 (obj));
  g_print ("Property 2: %s\n", my_object_get_property2 (obj));

  g_object_unref (obj);

  return 0;
}

这个程序定义了一个名为 `MyObject` 的 GObject 子类，包含两个属性 `property1` 和 `property2`，并演示了如何使用 `g_object_new_with_properties` 函数创建该对象。如果您仍然遇到问题，请提供更多的上下文和代码，以便我能够更好地帮助您。