gnome-devel-docs 3.28.0-1 / usr / share / help / es / gnome-devel-demos / dialog.c.page

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<?xml version="1.0" encoding="utf-8"?>
<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.c" xml:lang="es">
  <info>
    <title type="text">Diálogo (C)</title>
    <link type="guide" xref="c#windows"/>
    <link type="seealso" xref="label.c"/>
    <link type="seealso" xref="button.c"/>
    <revision version="0.1" date="2012-06-14" status="draft"/>

    <credit type="author copyright">
      <name>Monica Kochofar</name>
      <email its:translate="no">monicakochofar@gmail.com</email>
      <years>2012</years>
    </credit>

    <desc>Una ventana emergente</desc>
  
    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
      <mal:name>Daniel Mustieles</mal:name>
      <mal:email>daniel.mustieles@gmail.com</mal:email>
      <mal:years>2011 - 2017</mal:years>
    </mal:credit>
  
    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
      <mal:name>Nicolás Satragno</mal:name>
      <mal:email>nsatragno@gmail.com</mal:email>
      <mal:years>2012 - 2013</mal:years>
    </mal:credit>
  
    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
      <mal:name>Jorge González</mal:name>
      <mal:email>jorgegonz@svn.gnome.org</mal:email>
      <mal:years>2011</mal:years>
    </mal:credit>
  </info>

  <title>Diálogo</title>

  <media type="image" mime="image/png" src="media/dialog.png"/>
  <p>Una ventana de diálogo que aparece cuando se pulsa un botón</p>

      <code mime="text/x-csrc" style="numbered">
#include &lt;gtk/gtk.h&gt;
 

/*Callback function in which reacts to the "response" signal. Be sure to place 
it before the function it is called in*/
static void
on_response (GtkDialog *dialog,
             gint       response_id,
             gpointer   user_data)
{
  /*For demonstration purposes, this will show the int value 
  of the response type*/
  g_print ("response is %d\n", response_id);
  
  /*This will cause the dialog to be destroyed*/
  gtk_widget_destroy (GTK_WIDGET (dialog));
}



/*Callback function in which reacts to the "clicked" signal*/
static void
show_dialog (GtkButton *button,
             gpointer   user_data)
{
  GtkWindow *window = user_data;
  GtkWidget *dialog;
  GtkWidget *content_area;
  GtkWidget *label;

  gint response_id;

  /*Create the dialog window. Modal windows prevent interaction with other 
  windows in the same application*/
  dialog = gtk_dialog_new_with_buttons ("A Gtk+ Dialog", 
                                        window, 
                                        GTK_DIALOG_MODAL, 
                                        GTK_STOCK_OK, 
                                        GTK_RESPONSE_OK, 
                                        NULL);

  /*Create a label and attach it to the content area of the dialog*/
  content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
  label = gtk_label_new ("This demonstrates a dialog with a label");
  gtk_container_add (GTK_CONTAINER (content_area), label);

  /*The main purpose of this is to show dialog's child widget, label*/
  gtk_widget_show_all (dialog);
  
  /*Connecting the "response" signal from the user to the associated
  callback function*/
  g_signal_connect (GTK_DIALOG (dialog), 
                    "response", 
                    G_CALLBACK (on_response), 
                    NULL);

}



static void
activate (GtkApplication *app,
          gpointer        user_data)
{
  GtkWidget *window;
  GtkWidget *button;
 
  /*Create a window with a title and a default size*/
  window = gtk_application_window_new (app);
  gtk_window_set_title (GTK_WINDOW (window), "GNOME Button");
  gtk_window_set_default_size (GTK_WINDOW (window), 250, 50);

  /*Create a button with a label, and add it to the window*/
  button = gtk_button_new_with_label ("Click Me");
  gtk_container_add (GTK_CONTAINER (window), button);
 
  /*Connecting the clicked signal to the callback*/
  g_signal_connect (GTK_BUTTON (button), 
                    "clicked", 
                    G_CALLBACK (show_dialog), 
                    GTK_WINDOW (window));
 
  gtk_widget_show_all (window);
}
 


int
main (int argc, char **argv)
{
  GtkApplication *app;
  int status;
 
  app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
  g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
  status = g_application_run (G_APPLICATION (app), argc, argv);
  g_object_unref (app);
 
  return status;
}
</code>
<p>En este ejemplo se usa lo siguiente:</p>
<list>
  <item><p><link href="http://developer.gnome.org/gtk3/3.4/GtkApplication.html">GtkApplication</link></p></item>
  <item><p><link href="http://developer.gnome.org/gtk3/3.4/GtkWindow.html">GtkWindow</link></p></item>
  <item><p><link href="http://developer.gnome.org/gtk3/stable/GtkDialog.html">GtkDialog</link></p></item>
  <item><p><link href="http://developer.gnome.org/gtk3/stable/GtkLabel.html">GtkLabel</link></p></item>
</list>
</page>

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