package {
    import flash.display.Sprite;
    import flash.system.Capabilities;

    public class CapabilitiesExample extends Sprite {
        public function CapabilitiesExample() {
            showCapabilities();
        }
       
        private function showCapabilities():void {
            trace("avHardwareDisable: " + Capabilities.avHardwareDisable);
            trace("hasAccessibility: " + Capabilities.hasAccessibility);
            trace("hasAudio: " + Capabilities.hasAudio);
            trace("hasAudioEncoder: " + Capabilities.hasAudioEncoder);
            trace("hasEmbeddedVideo: " + Capabilities.hasEmbeddedVideo);
            trace("hasMP3: " + Capabilities.hasMP3);
            trace("hasPrinting: " + Capabilities.hasPrinting);
            trace("hasScreenBroadcast: " + Capabilities.hasScreenBroadcast);
            trace("hasScreenPlayback: " + Capabilities.hasScreenPlayback);
            trace("hasStreamingAudio: " + Capabilities.hasStreamingAudio);
            trace("hasVideoEncoder: " + Capabilities.hasVideoEncoder);
            trace("isDebugger: " + Capabilities.isDebugger);
            trace("language: " + Capabilities.language);
            trace("localFileReadDisable: " + Capabilities.localFileReadDisable);
            trace("manufacturer: " + Capabilities.manufacturer);
            trace("os: " + Capabilities.os);
            trace("pixelAspectRatio: " + Capabilities.pixelAspectRatio);
            trace("playerType: " + Capabilities.playerType);
            trace("screenColor: " + Capabilities.screenColor);
            trace("screenDPI: " + Capabilities.screenDPI);
            trace("screenResolutionX: " + Capabilities.screenResolutionX);
            trace("screenResolutionY: " + Capabilities.screenResolutionY);
            trace("serverString: " + Capabilities.serverString);
            trace("version: " + Capabilities.version);
        }
    }
}
返回结果：
avHardwareDisable: false
hasAccessibility: false
hasAudio: true
hasAudioEncoder: true
hasEmbeddedVideo: true
hasMP3: true
hasPrinting: true
hasScreenBroadcast: false
hasScreenPlayback: true
hasStreamingAudio: true
hasVideoEncoder: true
isDebugger: true
language: zh-CN
localFileReadDisable: false
manufacturer: Adobe Windows
os: Windows
pixelAspectRatio: 1
playerType: External
screenColor: color
screenDPI: 72
screenResolutionX: 1024
screenResolutionY: 768
serverString: A=t&SA=t&SV=t&EV=t&MP3=t&AE=t&VE=t&ACC=f&PR=t&SP=t&SB=f&DEB=t&V=WIN%209%2C0%2C45%2C0&M=Adobe%20Windows&R=1024x768&DP=72&COL=color&AR=1.0&OS=Windows&L=zh-CN&IME=t&PT=External&AVD=f&LFD=f&WD=f&TLS=t
version: WIN 9,0,45,0