如何使用 PyGTK3 在另一个模式对话框之上正确创建一个模式对话框，以便第二个对话框位于顶部？

发布于 2025-01-09 08:39:41 字数 1280 浏览 1 评论 0原文

我有一个 Windows-10 PyGTK3 应用程序（python 3.8 + GTK3.24），结构如下：它有一个非模式主窗口，它打开一个模式对话框（A），进而打开另一个模式对话框（B）。我使用空地来设计所有三个窗口的布局和属性。

在应用程序启动时，我保留 GtkWindow A 的实例，如下所示：

def __init__(self):
     self._main_window = builder.get_object("main_window")
...
def on_clicked_open_dialog_a(self, _widget):
    dlg_a = DialogA(self._main_window)
    dlg_a.run()

在对话框 A 中，我执行类似的操作：

def __init__(self, parent):
    self._dialog = builder.get_object("dialog_a")
    self._dialog.set_transient_for(parent)
...
def on_clicked_open_dialog_b(self, _widget):
    dlg_b = DialogB(self._dialog)
    dlg_b.run()

在对话框 B 中执行相同的操作：

def __init__(self, parent):
    self._dialog = builder.get_object("dialog_b")
    self._dialog.set_transient_for(parent)

这就是它应该的样子

我遇到的问题是，一旦我从对话框 A 打开对话框 B，对话框 A 就会停止运行就像一个正确的模态对话框：如果我单击它，它的窗口将变为活动状态，即使对话框 B 仍显示在其顶部（并且可以移动和最大化/最小化，但不能关闭），像这样

，如果我用另一个窗口覆盖该应用程序并使用 Alt-Tab 来打开该应用程序返回后，对话框 A 位于顶部，我只能通过单击对话框 A 来访问对话框 B 如本图所示

我做错了什么，该如何解决？

原文

I have a Windows-10 PyGTK3 app (python 3.8 + GTK3.24) structured as follows: it has a non-modal main window, which opens a modal dialog (A), which in turn opens another modal dialog (B).
I use glade for the layout and properties of all three windows.

On the app startup I retain the instance of the GtkWindow A as follows:

def __init__(self):
     self._main_window = builder.get_object("main_window")
...
def on_clicked_open_dialog_a(self, _widget):
    dlg_a = DialogA(self._main_window)
    dlg_a.run()

In the dialog A, I do a similar thing:

def __init__(self, parent):
    self._dialog = builder.get_object("dialog_a")
    self._dialog.set_transient_for(parent)
...
def on_clicked_open_dialog_b(self, _widget):
    dlg_b = DialogB(self._dialog)
    dlg_b.run()

And the same thing in the dialog B:

def __init__(self, parent):
    self._dialog = builder.get_object("dialog_b")
    self._dialog.set_transient_for(parent)

This is what it is supposed to look like

The problem that I am running into is that once I open the Dialog B from the Dialog A, the Dialog A ceases to behave like a proper modal dialog: if I click it, its window becomes active, even though the Dialog B is still displayed on top of it (and it can be moved and maximized/minimized, but not closed),
like so

and if I cover the app with another window and use Alt-Tab to bring the app back, the Dialog A comes on top, and I can only access the Dialog B by clicking on the Dialog A
as appears on this diagram

What am I doing wrong, and how do I fix it, please?

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