Question

当我在bash终端中运行以下ruby代码时（Ubuntu 14.04，ruby 1.9.3）， folder_test工作正常，但my_test显示一个奇怪的行为：当我从中选择文件夹时，它不会关闭gtk对话框窗口书签和焦点仍然在对话窗口而不是返回到终端虽然所选文件夹已正确报告给终端。出了什么问题，如何强制关闭对话窗口？

# -*- encoding : utf-8 -*- 
#!/usr/bin/ruby

require 'gtk3'

def get_folder(folder)  
  a=''     
  Dir.chdir(File.expand_path(folder)) {
  dialog = Gtk::FileChooserDialog.new(
    :title => "Choose folder", :parent => nil, 
    :action => :select_folder, 
    :buttons => [[Gtk::Stock::OPEN, Gtk::ResponseType::ACCEPT], [Gtk::Stock::CANCEL, Gtk::ResponseType::CANCEL]])
  if dialog.run == Gtk::ResponseType::ACCEPT
    a=dialog.filename
  end
  dialog.destroy }
  return a 
end

def folder_test
  b=get_folder("/home")
  if b=="/home" 
    puts "No folder chosen"
    exit
  end
  puts "#{b} was choosen."
end

def my_test
  while true do
    folder_test
    puts "Another folder?(y/n)"
    answer=gets.chomp.downcase
    unless answer=='y'
      exit
    end
  end  
end

#folder_test
my_test

Answer 1

您可以在dialog.destroy之后使用以下代码：

while Gtk.events_pending?
  Gtk.main_iteration
end

例如：

  if dialog.run == Gtk::ResponseType::ACCEPT
    a=dialog.filename
  end
  dialog.destroy
  while Gtk.events_pending?
    Gtk.main_iteration
  end
  }
  return a
end

DIFF：

@@ -13,7 +13,11 @@ def get_folder(folder)
   if dialog.run == Gtk::ResponseType::ACCEPT
     a=dialog.filename
   end 
-  dialog.destroy }
+  dialog.destroy
+  while Gtk.events_pending?
+    Gtk.main_iteration
+  end 
+  }
   return a
 end

Ruby中的GTK FileChooserDialog没有关闭窗口

1 个答案: