I was able to successfully send keys to the window.

Since I need an event based model, a GUI interface, and Wx and Events to work together, I need to have the main loop of Wx perform the polling of WindowIds

This is how I did it using events:

#!/usr/bin/perl

use 5.010001;
use strict;
use warnings;

use X11::GUITest qw/:ALL/;
use Event;

my $window_id = 0;
my $last_window_id = 0;

#check the id of the window with focus every 'interval'
Event->timer(
    interval => 1,
    cb => \&check_focus_id
    );


sub check_focus_id {
    #check the current window ID
    my $curr_id = GetInputFocus;
    #if it has changed
    if ($curr_id != $window_id){
        #write the change to the log;
        write_to_log ($curr_id);
        #shift variables out, I thought of using an array to do this
        #but for testing purposes I chose this to explicative
        $last_window_id = $window_id;
        $window_id = $curr_id;
    }
    #if focus ID is the same
    else {
        #for now do nothing
    }
}

#write to log
sub write_to_log {
    my $id = shift;
    
    open my $LOG, '>>', '/home/jon/log.out';
    say $LOG $id;
    close $LOG;
    
    return 1;
}

#start the main event loop
Event::loop;
[download]

Can someone assist me in figuring out how to get Wx to poll like that, or a better method of polling?

Thanks