Examples in widget demo, listed under 

Canvases
1. The canvas item types.
2. A simple 2-D plot.
3. Text items in canvases.
4. An editor for arrowheads on canvas lines.
5. A ruler with adjustable tab stops.
6. A building floor plan.
7. A simple scrollable canvas.
8. Tiles and transparent images.

[download]

You can find same with 

perl -MTk -le " print Tk->findINC( shift ) "  demos/widget_lib/items.p
+l
perl -MTk -le " print Tk->findINC( shift ) "  demos/widget_lib/style.p
+l

[download]
style.pl uses tags to apply font/color... to bunches of text tagged with a certain style... other files ( plot.pl ruler.pl ctext.pl transtile.pl cscroll.pl floor.pl arrows.pl ) demo stuff too

https://metacpan.org/pod/Tk::Canvas#canvas--bind-tagOrId--sequence---callback

https://metacpan.org/pod/Tk::Canvas#canvas--bbox-tagOrId---tagOrId--tagOrId

For more examples Super Search for site:perlmonks.org Tk Canvas bind bbox same as you would for Tk Canvas Scroll

Ex Determine canvas object under click (Tk)

In reply to Re^4: tk canvas text by Anonymous Monk
in thread tk canvas text by jsteng

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.