User Guide

730 Chapter 7: ActionScript for Flash

Horizontal scrolling is measured in pixels because most fonts you typically use are proportionally

spaced; meaning, the characters can have different widths. Flash performs vertical scrolling by line

because users usually want to see a line of text in its entirety, as opposed to seeing a partial line.

Even if there are multiple fonts on a line, the height of the line adjusts to fit the largest font in use.

Note: The hscroll property is zero-based—not one-based like the vertical scrolling property

TextField.scroll.

Example

The following example scrolls the my_txt text field horizontally using two buttons called

scrollLeft_btn and scrollRight_btn. The amount of scroll displays in a text field called

scroll_txt. Add the following ActionScript to your FLA or AS file:

this.createTextField("scroll_txt", this.getNextHighestDepth(), 10, 10, 160,

20);

this.createTextField("my_txt", this.getNextHighestDepth(), 10, 30, 160, 22);

my_txt.border = true;

my_txt.multiline = false;

my_txt.wordWrap = false;

my_txt.text = "Lorem ipsum dolor sit amet, consectetuer adipiscing...";

scrollLeft_btn.onRelease = function() {

my_txt.hscroll -= 10;

scroll_txt.text = my_txt.hscroll+" of "+my_txt.maxhscroll;

};

scrollRight_btn.onRelease = function() {

my_txt.hscroll += 10;

scroll_txt.text = my_txt.hscroll+" of "+my_txt.maxhscroll;

};