我正在尝试创建一个使用Gtk FileChooserDialog对话框的程序。我在这里遵循了教程，并且可以正常工作。但是，我只想弹出对话框，而不必处理实际的Gtk窗口。
在删除已经存在的代码之后，我尝试将本教程中的on_file_clicked()代码放入函数中，并将其放入__init__函数中（并对其进行一些调整，使其看起来可以正常工作）__init__：
class FileChooserWindow(Gtk.Window):
def __init__(self):
global path
dialog = Gtk.FileChooserDialog("Please choose a file", self,
Gtk.FileChooserAction.OPEN,
(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
self.add_filters(dialog)
response = dialog.run()
if response == Gtk.ResponseType.OK:
print("Open clicked")
print("File selected: " + dialog.get_filename())
path = dialog.get_filename()
dialog.destroy()
elif response == Gtk.ResponseType.CANCEL:
print("Cancel clicked")
dialog.destroy()
def add_filters(self, dialog):
filter_any = Gtk.FileFilter()
filter_any.set_name("Any files")
filter_any.add_pattern("*")
dialog.add_filter(filter_any)
filter_text = Gtk.FileFilter()
filter_text.set_name('Text files')
filter_text.add_mime_type('text/plain')
dialog.add_filter(filter_text)
filter_py = Gtk.FileFilter()
filter_py.set_name('Python files')
filter_py.add_mime_type('text/x-python')
dialog.add_filter(filter_py)
filter_img = Gtk.FileFilter()
filter_img.set_name('Image')
filter_img.add_mime_type('image/*')
dialog.add_filter(filter_img)
win = FileChooserWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
但它只会返回此错误：
Traceback (most recent call last):
File "base.py", line 152, in <module>
win = FileChooserWindow()
File "base.py", line 38, in __init__
Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 175, in new_init
return super_init_func(self, **new_kwargs)
File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 500, in __init__
self._init(*args, **new_kwargs)
File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 175, in new_init
return super_init_func(self, **new_kwargs)
File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 175, in new_init
return super_init_func(self, **new_kwargs)
TypeError: could not convert value for property `transient_for' from FileChooserWindow to GtkWindow
有谁知道仅拉起Gtk FileChooserDialog对话框的正确方法？
在第6行上声明对话框时：
dialog = Gtk.FileChooserDialog("Please choose a file", self,
self是对话框的父级。要创建没有父项的对话框，请将其设置为None，如下所示：
dialog = Gtk.FileChooserDialog("Please choose a file", None,
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我来说两句