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<H1>[Gtk-sharp-list] Re: How to validate input on Gtk.Dialog?</H1>
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<B>Paul Wallimann</B>
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<A HREF="mailto:gtk-sharp-list%40lists.ximian.com?Subject=%5BGtk-sharp-list%5D%20Re%3A%20How%20to%20validate%20input%20on%20Gtk.Dialog%3F&In-Reply-To="
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TITLE="[Gtk-sharp-list] Re: How to validate input on Gtk.Dialog?">pwallimann at hotmail.com
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</A><BR>
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<I>Fri Sep 9 12:46:45 EDT 2005</I>
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<LI>Previous message: <A HREF="006377.html">[Gtk-sharp-list] How to validate input on Gtk.Dialog?
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<!--beginarticle-->
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<PRE>Hi Rafael,
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Thanks for sharing your solution. Before I got to read your solution I have
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found a way to accomplish the required functionality. What I do now is
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Button b = new Button(Stock.Ok);
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this.ActionArea.Add(b);
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b.Clicked += OnButtonOKClicked;
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b.Show(); //Required to make button visible. Why not automatically?
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instead of
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this.AddButton(Stock.Ok, ResponseType.Ok);
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In the handler OnButtonOKClicked I first do the input validation and if it
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succeeds then I call
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this.Respond(ResponseType.Ok);
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which closes the dialog and returns to the caller.
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Regards,
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Paul
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Rafael Teixeira wrote:
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><i> Small clarification:
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</I>><i>
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</I>><i> I use Glade and a wrapping class generator and windowWidget is of type
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</I>><i> Gtk.Dialog.
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</I>><i>
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</I>><i> :)
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</I>><i>
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</I>><i>
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</I>><i> On 9/8/05, Rafael Teixeira <<A HREF="http://lists.ximian.com/mailman/listinfo/gtk-sharp-list">monoman at gmail.com</A>> wrote:
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</I>>><i> I normally design a common form (window) and create a Run method somewhat
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</I>>><i> like
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</I>>><i>
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</I>>><i> private string password;
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</I>>><i>
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</I>>><i> public string Run()
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</I>>><i> {
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</I>>><i> try {
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</I>>><i> windowWidget.ShowAll();
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</I>>><i> while (true) {
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</I>>><i> ResponseType response = (ResponseType)windowWidget.Run();
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</I>>><i> if (response == ResponseType.Ok && validate(password))
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</I>>><i> break;
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</I>>><i> if (response == ResponseType.Cancel) {
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</I>>><i> password = null;
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</I>>><i> break;
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</I>>><i> }
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</I>>><i> }
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</I>>><i> } catch (Exception ex) {
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</I>>><i> password = null;
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</I>>><i> }
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</I>>><i> windowWidget.Hide();
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</I>>><i> return password;
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</I>>><i> }
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</I>>><i>
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</I>>><i> some event/signal is catched to update the 'password' variable as
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</I>>><i> needed, or some code like:
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</I>>><i>
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</I>>><i> password = entryPassword.Text;
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</I>>><i>
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</I>>><i> can be put before the first 'if'
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</I>>><i>
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</I>>><i> :)
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</I>>><i>
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</I>>><i> On 9/5/05, Paul Wallimann <<A HREF="http://lists.ximian.com/mailman/listinfo/gtk-sharp-list">pwallimann at hotmail.com</A>> wrote:
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</I>>><i> > I am still rather new to GTK# and currently struggling with the
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</I>>><i> > following: I want to implement a (modal) Login Dialog that only returns
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</I>>><i> > to the calling method when the user either hits Cancel or enters the
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</I>>><i> > correct password and hits OK. When the user enters the wrong password
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</I>>><i> > and hits OK the dialog should remain open.
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</I>>><i> >
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</I>>><i> > I thought I could implement this by simply subclassing from Gtk.Dialog.
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</I>>><i> > Unfortunately, the dialog gets closed immediately after either of the 2
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</I>>><i> > buttons is hit and I have not found a way to execute the validation and
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</I>>><i> > keep the dialog open when the password is wrong. Following is my code
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</I>>><i> > (using gtk-sharp, Version=2.4.0.0):
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</I>>><i> >
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</I>>><i> > using System;
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</I>>><i> > using Gtk;
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</I>>><i> >
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</I>>><i> > namespace Testing
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</I>>><i> > {
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</I>>><i> > public class LoginDialog : Dialog
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</I>>><i> > {
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</I>>><i> > public static void Main (string[] args)
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</I>>><i> > {
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</I>>><i> > Application.Init();
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</I>>><i> >
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</I>>><i> > LoginDialog dlg = new LoginDialog();
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</I>>><i> > dlg.Modal = true;
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</I>>><i> > int response = dlg.Run();
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</I>>><i> > Console.WriteLine("Main: Response was {0}",
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</I>>><i> > (ResponseType)response); dlg.Destroy();
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</I>>><i> > }
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</I>>><i> >
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</I>>><i> > public LoginDialog()
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</I>>><i> > : base()
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</I>>><i> > {
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</I>>><i> > this.AddButton(Stock.Cancel,
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</I>>><i> > ResponseType.Cancel); this.AddButton(Stock.Ok,
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</I>>><i> > ResponseType.Ok); this.Response += new
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</I>>><i> > ResponseHandler(On_dialog_response);
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</I>>><i> > }
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</I>>><i> > private void On_dialog_response (object obj,
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</I>>><i> > ResponseArgs args)
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</I>>><i> > {
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</I>>><i> > Console.WriteLine ("On_dialog_response: args.ResponseId =
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</I>>><i> > {0}",
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</I>>><i> > args.ResponseId);
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</I>>><i> > if (args.ResponseId == ResponseType.Ok)
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</I>>><i> > args.RetVal = false; // keep dialog open
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</I>>><i> > }
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</I>>><i> > protected override bool OnDeleteEvent(Gdk.Event e)
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</I>>><i> > {
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</I>>><i> > // This method is not called. Why?
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</I>>><i> > Console.WriteLine("OnDeleteEvent: called");
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</I>>><i> > return false;
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</I>>><i> > }
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</I>>><i> > }
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</I>>><i> > }
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</I>>><i> >
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</I>>><i> >
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</I>>><i> > I would appreciate if someone could tell me how to do it correctly or
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</I>>><i> > point me to an appropriate resource on the internet. Thanks in advance.
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</I>>><i> >
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</I>>><i> > Regards,
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</I>>><i> > Paul Wallimann
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</I>>><i> >
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</I>>><i> > _______________________________________________
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</I>>><i> > Gtk-sharp-list maillist - <A HREF="http://lists.ximian.com/mailman/listinfo/gtk-sharp-list">Gtk-sharp-list at lists.ximian.com</A>
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</I>>><i> > <A HREF="http://lists.ximian.com/mailman/listinfo/gtk-sharp-list">http://lists.ximian.com/mailman/listinfo/gtk-sharp-list</A>
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</I>>><i> >
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</I>>><i>
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</I>>><i>
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</I>>><i> --
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</I>>><i> Rafael "Monoman" Teixeira
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</I>>><i> ---------------------------------------
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</I>>><i> I'm trying to become a "Rosh Gadol" before my own eyes.
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</I>>><i> See <A HREF="http://www.joelonsoftware.com/items/2004/12/06.html">http://www.joelonsoftware.com/items/2004/12/06.html</A> for enlightment.
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</I>>><i> It hurts!
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</I>>><i>
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</I>><i>
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</I>><i>
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</I>
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</PRE>
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