0
这是练习的一部分。我在SO上找不到类似的问题。这里有一个小小的GTK程序,点击重命名按钮后,文件应该重命名。无法重命名文件,因为:g_file_set_display_name:assertion'G_IS_FILE(file)'failed
虽然uri似乎指向正确的文件,但出于某种原因,我得到断言G_IS_FILE在运行时失败。
下面是代码:
[indent=4]
uses
Gtk
class TestWindow:Window
_file_chooser:FileChooserButton
_entry:Gtk.Entry
_button:Gtk.Button
_file:File
construct()
title = "File chooser"
window_position = WindowPosition.CENTER
destroy.connect(Gtk.main_quit)
var folder_chooser = new FileChooserButton("Choose a Folder",FileChooserAction.SELECT_FOLDER)
folder_chooser.set_current_folder(Environment.get_home_dir())
//I used selection_changed directly as per the question in stack_exchange
//http://stackoverflow.com/questions/34689763/the-signal-connect-syntax
folder_chooser.selection_changed.connect(folder_changed)
_file_chooser = new FileChooserButton("Choose a File",FileChooserAction.OPEN)
_file_chooser.set_current_folder(Environment.get_home_dir())
_file_chooser.file_set.connect(file_changed)
_entry = new Gtk.Entry()
_entry.set_text("Here the file name")
//_entry.activate.connect(name_altered)
_button = new Button.with_label("Rename")
_button.set_sensitive(false)
_button.clicked.connect(btn_pressed)
var box = new Box(Orientation.VERTICAL, 0)
box.pack_start(folder_chooser, true, true, 0)
box.pack_start(_file_chooser, true, true, 0)
box.pack_start(_entry, true, true, 0)
box.pack_start(_button, true, true, 0)
add(box)
def folder_changed(folder_chooser_widget:FileChooser)
folder:string = folder_chooser_widget.get_uri()
_file_chooser.set_current_folder_uri(folder)
def file_changed (file_chooser_widget: FileChooser)
_file:File = File.new_for_uri(file_chooser_widget.get_uri())
try
info:FileInfo = _file.query_info (FileAttribute.ACCESS_CAN_WRITE, FileQueryInfoFlags.NONE, null)
writable: bool = info.get_attribute_boolean (FileAttribute.ACCESS_CAN_WRITE)
if !writable
_entry.set_sensitive (false)
else
_button.set_sensitive (true)
except e: Error
print e.message
_entry.set_text(_file.get_path())
def btn_pressed()
_file.set_display_name(_entry.get_text())
init
Gtk.init(ref args)
var test = new TestWindow()
test.show_all()
Gtk.main()
问题出现在行:_file.set_display_name(_entry.get_text())
。我正在寻找一些关于我在这个小巧精灵代码中做错了什么的见解。
谢谢nemequ,你可以建议一些参考,我可以学习如何使用this._field? –