Dear Monks, this has been really confusing me. Say we have MainWindow $mw that contains a widget $w. Say that $w belongs to a class that has default bindings for the events <Control-v> and <<Paste>> built in and bound to the same paste routine. Let's say you want to make a paste occur by using the eventGenerate method. For the real event, <Control-v> it appears you can call either $mw->eventGenerate('<Control-v>') or $w->eventGenerate('<Control-v>'). That is, eventGenerate can be called as a method of either the MainWindow or the widget, and it works the same. However, for the virtual event, only $w->eventGenerate('<<Paste>>') will work. trying to generate the virtual event off of the MainWindow ($mw->eventGenerate('<<Paste>>')doesn't do anything.

Here's some complete example code below. Examples 1, 2, and 3, work. Example 4 does not. ???

Example 1.

#!/usr/bin/perl -w

use strict;
use Tk;
my $mw = MainWindow->new;

$mw->Button(-text => "Paste", -command => \&DoPaste)->pack();
my $t = $mw->Text(-width => 30, -height => 5)->pack();
$t->focus;
sub DoPaste
{
    print "DoPaste\n";
    $t->eventGenerate('<Control-v>');
}

Tk->MainLoop;
[download]

Example 2

#!/usr/bin/perl -w

use strict;
use Tk;
my $mw = MainWindow->new;

$mw->Button(-text => "Paste", -command => \&DoPaste)->pack();
my $t = $mw->Text(-width => 30, -height => 5)->pack();
$t->focus;
sub DoPaste
{
    print "DoPaste\n";
    $mw->eventGenerate('<Control-v>');
}

Tk->MainLoop;
[download]

Example 3 (the virtual event generated off of the widget)

#!/usr/bin/perl -w

use strict;
use Tk;
my $mw = MainWindow->new;

$mw->Button(-text => "Paste", -command => \&DoPaste)->pack();
my $t = $mw->Text(-width => 30, -height => 5)->pack();
$t->focus;
sub DoPaste
{
    print "DoPaste\n";
    $t->eventGenerate('<<Paste>>');
}

Tk->MainLoop;
[download]

Example 4. Paste button doesn't work. The widget's virtual paste event is not being generated, it seems. If the virtual paste binding weren't tagged with the widget's class then I think it would work. But the real control-v event works regardless. How rude!

#!/usr/bin/perl -w

use strict;
use Tk;
my $mw = MainWindow->new;

$mw->Button(-text => "Paste", -command => \&DoPaste)->pack();
my $t = $mw->Text(-width => 30, -height => 5)->pack();
$t->focus;
sub DoPaste
{
    print "DoPaste\n";
    $mw->eventGenerate('<<Paste>>');
}

Tk->MainLoop;
[download]

Can anybody explain why this works the way it does. Why generating a virtual event doesn't seem to work the same as generating a 'real' event? My initial impulse is to assume this is a bug, but I make that assumption a lot, and I've never turned out to be right. It's never a bug, I'm just always misunderstanding something. What am I misunderstanding?

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