User Guide

524 Chapter 2: ActionScript Language Reference
MovieClip.getSWFVersion()
Availability
Flash Player 7.
Usage
my_mc.getSWFVersion() : Number
Parameters
None.
Returns
An integer that specifies the Flash Player version that was targeted when the SWF file loaded into
my_mc was published.
Description
Method; returns an integer that indicates the Flash Player version for which my_mc was published.
If
my_mc is a JPEG file, or if an error occurs and Flash can’t determine the SWF version of my_mc,
-1 is returned.
You can extend the methods and event handlers of the MovieClip class by creating a subclass. For
more information, see “Assigning a class to a movie clip symbol” in Using ActionScript in Flash.
Example
The following ActionScript displays the Flash Player version for the SWF file and for a SWF file
that loads into a movie clip instance called
fp6_mc.
trace(this.getSWFVersion()); // output: 7
fp6_mc.loadMovie("flashplayer6.swf");
my_btn.onRelease = function(){
trace("Loaded Flash Player " + fp6_mc.getSWFVersion() + " file.");
//output: Loaded Flash Player 6 file.
};