[Gtk-sharp-list] How to validate input on Gtk.Dialog?

[Rafael Teixeira]

I normally design a common form (window) and create a Run method somewhat like

private string password;

public string Run()
{
    try {
        windowWidget.ShowAll();
        while (true) {
            ResponseType response = (ResponseType)windowWidget.Run();
            if (response == ResponseType.Ok && validate(password))
                break;
            if (response == ResponseType.Cancel) {
                password = null;
                break;
            }
        }
    } catch (Exception ex) {
            password = null;
    }
    windowWidget.Hide();
    return password;
}

some event/signal is catched to update the 'password' variable as
needed, or some code like:

password = entryPassword.Text;

can be put before the first 'if'

:)

On 9/5/05, Paul Wallimann <pwallimann at hotmail.com> wrote:
> I am still rather new to GTK# and currently struggling with the following:
> I want to implement a (modal) Login Dialog that only returns to the calling
> method when the user either hits Cancel or enters the correct password and
> hits OK. When the user enters the wrong password and hits OK the dialog
> should remain open.
> 
> I thought I could implement this by simply subclassing from Gtk.Dialog.
> Unfortunately, the dialog gets closed immediately after either of the 2
> buttons is hit and I have not found a way to execute the validation and
> keep the dialog open when the password is wrong. Following is my code
> (using gtk-sharp, Version=2.4.0.0):
> 
> using System;
> using Gtk;
> 
> namespace Testing
> {
>         public class LoginDialog : Dialog
>         {
>                 public static void Main (string[] args)
>                 {
>                         Application.Init();
> 
>                         LoginDialog dlg = new LoginDialog();
>                         dlg.Modal = true;
>                         int response = dlg.Run();
>                         Console.WriteLine("Main: Response was {0}", (ResponseType)response);
>                         dlg.Destroy();
>                 }
> 
>                 public LoginDialog()
>                         : base()
>                 {
>                         this.AddButton(Stock.Cancel, ResponseType.Cancel);
>                         this.AddButton(Stock.Ok, ResponseType.Ok);
>                         this.Response += new ResponseHandler(On_dialog_response);
>                 }
>                 private void On_dialog_response (object obj, ResponseArgs args)
>         {
>             Console.WriteLine ("On_dialog_response: args.ResponseId = {0}",
> args.ResponseId);
>             if (args.ResponseId == ResponseType.Ok)
>                 args.RetVal = false; // keep dialog open
>         }
>                 protected override bool OnDeleteEvent(Gdk.Event e)
>                 {
>                         // This method is not called. Why?
>                         Console.WriteLine("OnDeleteEvent: called");
>                         return false;
>                 }
>         }
> }
> 
> 
> I would appreciate if someone could tell me how to do it correctly or point
> me to an appropriate resource on the internet. Thanks in advance.
> 
> Regards,
> Paul Wallimann
> 
> _______________________________________________
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> http://lists.ximian.com/mailman/listinfo/gtk-sharp-list
> 


-- 
Rafael "Monoman" Teixeira
---------------------------------------
I'm trying to become a "Rosh Gadol" before my own eyes. 
See http://www.joelonsoftware.com/items/2004/12/06.html for enlightment.
It hurts!