A dialog with the response signal hooked up to a callback function.
/* A window in the application. */
public class MyWindow : Gtk.ApplicationWindow {
/* Constructor */
internal MyWindow (MyApplication app) {
Object (application: app, title: "GNOME Button");
this.window_position = Gtk.WindowPosition.CENTER;
this.set_default_size (250,50);
var button = new Gtk.Button.with_label ("Click Me");
/* Connect the button's "clicked" signal to
* the signal handler (aka. this.callback function).
*/
button.clicked.connect (this.on_button_click);
/* Add the button to this window and show it. */
this.add (button);
button.show ();
}
/* The signal handler for the buttons 'clicked' signal. */
void on_button_click (Gtk.Button button) {
var dialog = new Gtk.Dialog.with_buttons ("A Gtk+ Dialog", this,
Gtk.DialogFlags.MODAL,
Gtk.Stock.OK,
Gtk.ResponseType.OK, null);
var content_area = dialog.get_content_area ();
var label = new Gtk.Label ("This demonstrates a dialog with a label");
content_area.add (label);
/* Connect the 'response' signal of the dialog
* the signal handler. It is emitted when the dialog's
* OK button is clicked.
*/
dialog.response.connect (on_response);
/* Show the dialog and all the widgets. */
dialog.show_all ();
}
/* Signal handler for the 'response' signal of the dialog. */
void on_response (Gtk.Dialog dialog, int response_id) {
/* To see the int value of the ResponseType. This is only
* for demonstration purposes.*/
print ("response is %d\n", response_id);
/* This causes the dialog to be destroyed. */
dialog.destroy ();
}
}
/* This is the application. */
public class MyApplication : Gtk.Application {
/* The constructor of the application. */
internal MyApplication () {
Object (application_id: "org.example.MyApplication");
}
/* Override the 'activate' signal of GLib.Application. */
protected override void activate () {
/* Create a window for the this application and show it. */
new MyWindow (this).show ();
}
}
/* The main function creates and runs the application. */
public int main (string[] args) {
return new MyApplication ().run (args);
}
In this sample we used the following:
Gtk.Dialog
Gtk.Dialog.with_buttons
Gtk.Label
get_content_area