User Guide

TextField.onSetFocus 739

onScroller is called whether the scroll position changed because of a users interaction with the

text field, or programmatic changes. The

onChanged handler fires only if a user interaction causes

the change. These two options are necessary because often one piece of code changes the scrolling

position, while the scroll bar code is unrelated and won't know that the scroll position changed

without being notified.

Example

The following example creates a text field called my_txt, and uses two buttons called

scrollUp_btn and scrollDown_btn to scroll the contents of the text field. When the

onScroller event handler is called, a trace() method is used to write information to the log

file. Create two buttons with instance names

scrollUp_btn and scrollDown_btn, and 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, 320, 240);

my_txt.multiline = true;

my_txt.wordWrap = true;

for (var i = 0; i<10; i++) {

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

sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat

volutpat.";

}

scrollUp_btn.onRelease = function() {

my_txt.scroll--;

};

scrollDown_btn.onRelease = function() {

my_txt.scroll++;

};

my_txt.onScroller = function() {

trace("onScroller called");

scroll_txt.text = my_txt.scroll+" of "+my_txt.maxscroll;

};