Greetings fellow acolytes

I have recently started working with Wx as a generic yet more platform native toolkit than Tk and have hit a snag. I'm writing a small data entry application which is basically 2 screens. Screen 1, enter some data & click a save button, then screen 2 comes up with a confirmation message & button to get a new clean starting screen. Thats the theory. In practice, I can get up to the confirmation screen OK & wipe it but I can't redisplay the initial screen widgets.

The code I have (trimmed down & simplified as far as possible) is 

#!/usr/bin/perl

use Wx;

#######################################
#
#
package MainFrame;
#
# define a frame inside the window
# then a panel to draw controls on
#######################################
use base qw(Wx::Frame);
use Wx qw(wxDefaultPosition wxDefaultSize 
          wxDEFAULT_FRAME_STYLE wxNO_FULL_REPAINT_ON_RESIZE wxCLIP_CHI
+LDREN);
use Wx::Event qw( EVT_BUTTON );

sub new {
    my $class = shift;
    my $self = $class->SUPER::new(@_);

    $self->{panel} = Wx::Panel->new($self, -1);
    $self->{txt} = Wx::StaticText->new($self->{panel},
        1,
        'Test',
        [50,15]);

    # authorise button
    my $btnID = 'authBtn';
    $self->{btn} = Wx::Button->new($self->{panel}, $btnID, 'Authorise'
+, 
        [50,50]);
    EVT_BUTTON($self, $btnID, \&auth_clicked);

    return $self;
}

sub auth_clicked {
    my $self = shift;

    $self->{panel}->Destroy;
    my $panel = Wx::Panel->new($self, -1);
    my $btnID = 66;
    $self->{btn} = Wx::Button->new($panel, $btnID,
        'Restart', [50,50]);
    EVT_BUTTON($self, $btnID, \&newtran);
}

sub newtran {
    # return to start, place another transaction
    # doesn't work though.
    my $self = shift(); # the window handle
    print ref $self;
    $main::wxobj->Destroy;
    $main::wxobj->new;
}

#######################################
#
#
package MyApp;
#
#
#######################################
use base qw(Wx::App);   # Inherit from Wx::App

sub OnInit
# Every application has its own OnInit method that will
# be called when the constructor is called.
{
    my $self = shift;
    $frame = MainFrame->new(undef,         # Parent window
                               -1,            # Window id
                               'Test App', # Title
                               [1,1],         # position X, Y
                               [300, 400]     # size X, Y
                             );

    $self->SetTopWindow($frame);    # Define the toplevel window
    $frame->Show(1);                # Show the frame
}

###########################################################
#
# The main program
#
package main;
use strict;
use warnings;
use vars qw/$wxobj/;

$wxobj = MyApp->new(); # New HelloWorld application
$wxobj->MainLoop;

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just another cpan module author

In reply to Clearing & Redrawing a Wx Window by spatterson

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