Circling a word by clicking on it

Question

Is there a way to click on a word in a PDF document and have that word circled (or boxed in with a border)? A friend asked me to work on a Character sheet for his game and a few of the selections aer made by "circling" a choice. Example: Good / Evil (the player would circle one or the other). As an alternate...it would be cool if the player could click on one word and have the other word striked-through (Example: The player chooses "Good" so the sheet would look like this... Good / Evil
I'm pretty good with all of the other calculations on this sheet but this one has me stumped. They didn't want a radio select.
Thanks for looking at this with me
Jack

Answer 1

You can set up a button so that it appears to circle a word, though it's really an ellipse. It's a lot easier to toggle the button's border, however, which would be a rectangle. You could use a similar technique to do a strikethrough.  Here's some code you can use in a button's Mouse Up event to toggle the border color from nothing (transparent) to red:
// Mouse Up script for button
(function () {
    // Get this button's current border color
    var cc = event.target.strokeColor;
    // Toggle this button's border color between transparent and red
    event.target.strokeColor = color.equal(cc, color.transparent) ? color.red : color.transparent;
To toggle a strikethrough instead, you could do this:
// Mouse Up script for button
(function () {
    // Define a string to use for the strikethrough text
    var strikethrough_text = "------";
    // Determine this button's new label
    var nc = event.target.buttonGetCaption() === "" ? strikethrough_text : "";
    // Toggle this button's label
    event.target.buttonSetCaption(nc);
You can change the number of hyphens to match the word you want to strikethrough and change the size of the button to suit.
If you really want to encircle a word, post again and I can provide a link to a demo.