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POUnderstanding name spaces in POE-Tk
 

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  1. POUnderstanding name spaces in POE-Tk
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    <p>I posted <a href="https://stackoverflow.com/questions/1145532/"> "How to undersand the POE-Tk use of destroy?"</a> in an attempt to reduce the bug in my production code to a test case. But it seems that the solution to the test case is not working in the full program.</p> <p>The program is 800+ lines long so I am hesitant to post it in full. I realize that the snippets I provide here may be too short to be of any use, but I hope to get some direction in either where to look for a solution or what additional information I can provide.</p> <p>Here is the Session::Create section of my POE-Tk app.</p> <pre><code> POE::Session->create( inline_states => { _start => \&ui_start, get_zone => \&get_zone, ping => \&ping, mk_disable => \&mk_disable, mk_active => \&mk_active, pop_up_add => \&pop_up_add, add_button_press => sub { my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP]; print "\nadd button pressed\n\n"; &validate; }, ih_button_1_press => sub { my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP]; print "\nih_button_1 pressed\n\n"; if( Tk::Exists($heap->{ih_mw}) ) { print "\n\nih_mw exists in ih_button_1_press\n\n"; } else { print "\n\nih_mw does not exist in ih_button_1_press\n\n"; } 1; $heap->{ih_mw}->destroy if Tk::Exists($heap->{ih_mw}); &auth; }, pop_up_del => \&pop_up_del, auth => \&auth, # validate => \&validate, auth_routine => \&auth_routine, raise_widget => \&raise_widget, del_action => \&del_action, over => sub { exit; } } );</code></pre> <p><code>add_button_press</code> is called here;</p> <pre><code> sub pop_up_add { ... my $add_but_2 = $add_frm_2->Button( -text => "Add Record", -command => $session->postback("add_button_press"), -font => "{Arial} 12 {bold}") -> pack( -anchor => 'c', -pady => 6, ); ... }</code></pre> <p>validate creates the Toplevel widget $heap->{ih_mw};</p> <pre><code> sub validate { ... if( ! $valid ) { print "\n! valid entered\n\n"; $heap->{label_text} .= "Add record anyway?"; my $lt_ref = \$heap->{label_text}; ... my $heap->{ih_mw} = $heap->{add_mw}->Toplevel( -title => "ih_mw"); ... if( Tk::Exists($heap->{ih_mw}) ) { print "\n\nih_mw exists in validate\n\n"; } else { print "\n\nih_mw does not exist in validate\n\n"; } ... my $ih_but1 = $heap->{ih_mw}->Button( -text => "Add", -font => 'vfont', -command => $session->postback("ih_button_1_press"), )->pack( -pady => 5 ); ... }</code></pre> <p>Pressing $ih_but1 results in this;</p> <p><code>C:\scripts\alias\resource&gt;alias_poe_V-3_0_par.pl</code></p> <p>add button pressed</p> <p>sub validate called</p> <p>! valid entered</p> <p><code>ih_mw</code> exists in validate</p> <p><code>ih_button_1</code> pressed</p> <p><code>ih_mw</code> does not exist in <code>ih_button_1_press</code></p> <p>So the <code>$heap-&gt;{ih_mw}</code> widget seems to be unkown to the <code>ih_button_1_press</code> anonymous subroutine even with the inclusion of "<code>($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];</code>"</p>
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    1. COPlease try to see whether both $heap and $heap->{ih_mw) are actually defined(). If $heap isn't defined then you could possibly still have the same problem as in your previous post.
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    2. COI added a if(defined($heap)) in front of the if( Tk::Exists($heap->{ih_mw}) ). It came back that $heap is defined. ih_button_1 pressed... heap is defined... ih_mw does not exist in ih_button_1_press...
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    3. COWhat about defined($heap->{ih_mw})?
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      1. USInshallah
 

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