How to popup a widget such as “entry” or “label” at the mouse location

[smh]

Hi All,

I am writing code Perl TK. I am want to popup a widget such as “entry” or “label” at the mouse location in a tree widget. I have been trying ideas similar to what I have seen done with popup menu. I have read your peace “Tk::Wm::Popup” on CPAN. <\P>

"...For this discussion, we'll use the simple term dialog to refer any widget that pops up and awaits user interaction, whether it be a Menu, a special purpose Toplevel, or any of the dialog-type widgets, including, but not limited to, ColorEditor, Dialog, DialogBox, ErrorDialog, FileSelect, FBox, getOpenFile and getSaveFile. ..."

I assume that I should be able to able to popup simple widgets. Here is my test code.

use         Tk;
use         Tk::Entry;
use         Tk::Tree;
use         Tk::Notebook;

use     warnings;
use     strict;

my $mw = MainWindow->new();

my $nb = $mw->NoteBook( -font => 'Tahoma 8 bold',
              )->pack( -side => 'top',
                   -anchor => 'ne',
                   -expand => 1,
                   -fill => 'both',
                 );

my $tb = $nb->add( 'Tab 1',
           -label => 'Tab1',
         );

my $tree = $tb->Scrolled( 'Tree',
              -background => 'snow',
              -selectmode => 'extended',
              -selectbackground => '#E0FFCC',
              -selectforeground => 'red',
              -highlightthickness => 0,
              -relief => 'ridge',
              -borderwidth => 2,
              -scrollbars => 'osoe',
              -drawbranch => 'true',
              -indicator  => 'true',
              -selectborderwidth => -1,
              -selectmode => 'extended',
              #-browsecmd => \&my_command,
            )->pack(-side => 'top',
                -anchor => 'nw',
                -expand => 1,
                -fill => 'both',
                   );

# ##=================================
# ## popup menu works fine
# ##=================================
# my $mb = $tree->Menu;
# $tree->bind("<Button-3>" => sub { $mb->Popup( -popover => "cursor",
#                           -tearoff => 0,
#                           -popanchor => 'nw',
#                           -overanchor => 'ne'
#                         )
#                 }
#        );
# 
# my $mdel = $mb->cascade( -label => 'Delete',
#              -tearoff => 0,
#                );
# 
# $mdel->command( -label => "Delete",
#         -command => sub{ my @E = $tree->info( 'selection' );
#                  foreach my $e ( @E )
#                    {
#                      $tree->delete( 'entry', $e);
#                    }
#                    }
#           );

##=================================
## popup an entry that does NOT work
##=================================
my $w = $tree->Frame();
$w->label( -text => 'popup label' );

$tree->bind("<Button-3>" => sub{ $w->Popup( -popover => "cursor",
                        -popanchor => 'nw',
                        -overanchor => 'ne'
                       )
                }
       );

MainLoop;

[zentara]

To amplify on what AnonymousMonk said about it requiring a Toplevel window to display an arbitrary widget ( other than a Menu ), your best hack is to try and use an overrideredirect window. Here is a simple example, and you will need to work out the details of the enter/leave bindings for your Tree. It helps that bind sends the the calling widget as the first element of @_.

#!/usr/bin/perl
use warnings;
use Tk;
use strict;

my $main = new MainWindow;
$main->geometry('200x200');

$main->Button(-text=>"click",-command=>sub{
          print "Button left click\n";
         })->pack;
   

$main->bind('<ButtonPress-3>', \&some_sub);
   
MainLoop;
   
sub some_sub{

print "@_\n";
my $widget = shift;

my $x = $widget->pointerx;
my $y = $widget->pointery;

my $mw_bdw = 2;  #mainwindow border width
### Create a Mainwindow ###
my $top = new MainWindow(-borderwidth=>$mw_bdw,
                          -relief=>'ridge',
                          -bg => "#0000FF");

$top->geometry("150x100+$x+$y"); # displaying at top left on any resol
+ution
$top->overrideredirect(1); # Remove window decorations and keep on all
+ screens
### create a text widget ###
my $imstr = "THIS IS A TEST NOTIFICTION LONG ENOUGH TO WRAP";
my $TEXT = $top->Text(
                       -foreground=> 'white',
                       -background=> '#0000FF',
                       -wrap => 'word',
                       -height => 7,
                       -width => 50)->pack;

$TEXT->insert('end', "$imstr", );

#$top-> after(5000, \&exitprg); # autoclose in 5000 milisecs
$top->bind('<ButtonRelease>',sub{$top->destroy}); #or sub exitprg

MainLoop; 

#### FUNCTIONS ####
sub exitprg {
my $top = shift;
print STDERR "CALLED EXIT\n";
$top-> destroy; # to kill the window and exit from prog
}

}

[Anonymous Monk]

I assume that I should be able to able to popup simple widgets.

Why? The docs say

You've probably had occasion to use a Dialog (or DialogBox) widget. These widgets are derived from a Toplevel (which is a subclass of Tk::Wm, the window manager)

A Tk::Frame is not a Toplevel