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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="dialog.py" xml:lang="es">
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<info>
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<title type="text">Diálogo (Python)</title>
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<link type="guide" xref="beginner.py#windows"/>
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<link type="seealso" xref="signals-callbacks.py"/>
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<link type="next" xref="aboutdialog.py"/>
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<revision version="0.1" date="2012-06-11" status="draft"/>
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<credit type="author copyright">
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<name>Marta Maria Casetti</name>
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<email its:translate="no">mmcasetti@gmail.com</email>
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<years>2012</years>
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</credit>
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<desc>Una ventana emergente</desc>
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<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
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<mal:name>Daniel Mustieles</mal:name>
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<mal:email>daniel.mustieles@gmail.com</mal:email>
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<mal:years>2011 - 2017</mal:years>
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</mal:credit>
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<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
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<mal:name>Nicolás Satragno</mal:name>
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<mal:email>nsatragno@gmail.com</mal:email>
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<mal:years>2012 - 2013</mal:years>
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</mal:credit>
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<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
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<mal:name>Jorge González</mal:name>
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<mal:email>jorgegonz@svn.gnome.org</mal:email>
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<mal:years>2011</mal:years>
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</mal:credit>
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</info>
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<title>Diálogo</title>
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<media type="image" mime="image/png" src="media/dialog.png"/>
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Un diálogo con la señal de respuesta conectada a una función de retorno de llamada.
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<links type="section"/>
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<section id="code">
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<title>Código usado para generar este ejemplo</title>
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from gi.repository import Gtk
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import sys
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class MyWindow(Gtk.ApplicationWindow):
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# construct a window (the parent window)
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def __init__(self, app):
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Gtk.Window.__init__(self, title="GNOME Button", application=app)
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self.set_default_size(250, 50)
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# a button on the parent window
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button = Gtk.Button("Click me")
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# connect the signal "clicked" of the button with the function
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# on_button_click()
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button.connect("clicked", self.on_button_click)
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# add the button to the window
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self.add(button)
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# callback function for the signal "clicked" of the button in the parent
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# window
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def on_button_click(self, widget):
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# create a Gtk.Dialog
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dialog = Gtk.Dialog()
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dialog.set_title("A Gtk+ Dialog")
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# The window defined in the constructor (self) is the parent of the dialog.
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# Furthermore, the dialog is on top of the parent window
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dialog.set_transient_for(self)
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# set modal true: no interaction with other windows of the application
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dialog.set_modal(True)
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# add a button to the dialog window
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dialog.add_button(button_text="OK", response_id=Gtk.ResponseType.OK)
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# connect the "response" signal (the button has been clicked) to the
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# function on_response()
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dialog.connect("response", self.on_response)
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# get the content area of the dialog, add a label to it
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content_area = dialog.get_content_area()
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label = Gtk.Label("This demonstrates a dialog with a label")
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content_area.add(label)
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# show the dialog
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dialog.show_all()
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def on_response(self, widget, response_id):
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print("response_id is", response_id)
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# destroy the widget (the dialog) when the function on_response() is called
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# (that is, when the button of the dialog has been clicked)
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widget.destroy()
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class MyApplication(Gtk.Application):
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def __init__(self):
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Gtk.Application.__init__(self)
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def do_activate(self):
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win = MyWindow(self)
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win.show_all()
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def do_startup(self):
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Gtk.Application.do_startup(self)
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app = MyApplication()
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exit_status = app.run(sys.argv)
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sys.exit(exit_status)
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</section>
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<section id="methods">
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<title>Métodos útiles para un widget «Dialog»</title>
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En la línea 16, la señal «clicked» se conecta a la función de retorno de llamada on_button_click() usando widget.connect(señal, función de retorno de llamada) . Consulte la <link xref="signals-callbacks.py"/> para obtener una explicación más detallada.
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<list>
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<item>En lugar de set_modal(True) se podría tener set_modal(False) seguido de set_destroy_with_parent(True) que destruiría la ventana de diálogo si se cerrara la ventana principal. </item>
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<item>add_button(button_text="La respuesta", response_id=42) , donde 42 es cualquier entero, es una alternativa a add_button(button_text="texto", response_id=Gtk.ResponseType.RESPUESTA) , donde RESPUESTA podría ser OK, CANCEL, CLOSE, YES, NO, APPLY, HELP , que a su vez corresponden a los enteros -5, -6,..., -11 . </item>
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</list>
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</section>
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<section id="references">
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<title>Referencias de la API</title>
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En este ejemplo se usa lo siguiente:
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<list>
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<item><link href="http://developer.gnome.org/gtk3/unstable/GtkDialog.html">GtkDialog</link> </item>
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<item><link href="http://developer.gnome.org/gtk3/unstable/GtkWindow.html">GtkWindow</link> </item>
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</list>
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</section>
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</page>
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