神秘的 GObject 警告：断言“G_IS_OBJECT（对象）”失败的

发布于 2024-11-29 01:39:51 字数 1129 浏览 1 评论 0原文

当我运行 GTK（Python GObject 自省）应用程序时，我收到警告，但无法找出其来源。当应用程序正在加载并且我正在填充 GtkListStore 时，在我第一次追加行后，我收到以下警告：

/usr/lib/python2.7/site-packages/gi/types.py:44: Warning: g_object_set_qdata: assertion `G_IS_OBJECT (object)' failed
  return info.invoke(*args)

其余行追加后没有任何进一步的警告。事实上，它总是只引发一次，总是在第一个要附加的项目上。但是，该行的实际内容似乎并不重要；无论如何它都会发出警告。当程序完成加载时，当我在 TreeView 中浏览所有行时，它们似乎都正常。

我的列表存储看起来像这样：

self.list_store = Gtk.ListStore(bool, str, str, str, str, str, str,
                                str, str, str, str, GdkPixbuf.Pixbuf,
                                str, str, str, object, Pango.Weight)

最后几列从关联的 GtkTreeView 中隐藏，但警告发生在创建 TreeView 之前，所以我确定它来自 ListStore。不用说，我确定所有我传递的行格式正确，因为正如我所说，警告总是在第一行之后引发，无论我先添加哪一行。

有谁知道这可能是什么原因造成的？它不会阻止我的应用程序运行，所以这不是紧急情况，但我不想让它向最终用户发出警告。

编辑：我使用 Python 的 -W all 命令行参数确认，实际上所有行都会发出警告。

我尝试使用 pdb 单步执行 append() 方法，但有趣的是，当它尝试设置时，它陷入了 gi 代码中的循环中包含 GdkPixbuf 的列的值，所以我在调试程序时从未真正看到引发的警告。我的猜测是 Pixbuf 导致了问题，但我不知道如何更改它以消除警告。 Pixbuf 在 TreeView 中正确渲染，所以我不确定发生了什么。

原文

I have a warning when I run my GTK (Python GObject introspection) application and I can't figure out its source. When the application is loading and I'm populating a GtkListStore, after the very first time I append a row, I get the following warning:

/usr/lib/python2.7/site-packages/gi/types.py:44: Warning: g_object_set_qdata: assertion `G_IS_OBJECT (object)' failed
  return info.invoke(*args)

The rest of the rows append without any further warnings. In fact, it's always only raised once, always on the first item to be appended. But, the actual contents of the row don't seem to matter; it raise the warning no matter what. When the program finishes loading, all of the rows seem to be ok when I browse them in the TreeView.

My list store looks like this:

self.list_store = Gtk.ListStore(bool, str, str, str, str, str, str,
                                str, str, str, str, GdkPixbuf.Pixbuf,
                                str, str, str, object, Pango.Weight)

The last few columns are hidden from the associated GtkTreeView, but the warning occurs before the TreeView is created, so I'm sure it's coming from the ListStore.Needless to say, I'm sure that all the rows I'm passing are in the correct format since, like I said, the warning is always raised after the first row, no matter which row I add first.

Does anyone have any idea what could be causing this? It's not preventing my application from running, so it's not an emergency, but I'd rather not have it spitting out warnings for the end user.

Edit:
I confirmed using Python's -W all commandline argument that the warning is actually being raised for all rows.

I tried stepping into the append() method using pdb but, interstingly, it gets stuck in a loop in the gi code when it tries setting the value of the column containing the GdkPixbuf, so I never actually see the warning raised when debugging the program. My guess is that the Pixbuf is causing the problem, but I have no idea how to change it to get rid of the warning. The Pixbuf renders correctly in the TreeView, so I'm not sure what is going on.

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