Re: text entry validation

[Matí­as Alejandro Torres <torresmat gmail com>]

> void
> on_bt_validate_clicked                 (GtkButton       *button,
>                                         gpointer         user_data)
> {
>
> if (........dont know how to check)......) 
>
> {
>
>
> }
> else/*******check if not correct then display dialog box*****/
>
> GtkWidget *dialog1;
> dialog1 = create_dialog1 ();
> gtk_widget_show (dialog1);
>
> }
>   

Maybe something like this will help:

void
on_bt_validate_clicked                 (GtkButton       *button,
                                       GtkEntry *entry)
{
        gboolean hasdigit = FALSE;
        const gchar * string = gtk_entry_get_text (entry);
        gint length = strlen (string);
        gint i = 0;
        
        while ((i < length) && (!hasdigit))
        {
                hasdigit = g_ascii_isdigit (string [i]);
                i++;
        }
        
        if (hasdigit)
                /* Show dialog */
        else
                /* Do something else */
}

The function g_ascii_isdigit checks wheter a character is an ASCII digit (0-9).