Add mouse up and down listener : MouseEvent « Development « Flash / Flex / ActionScript

1. Flash / Flex / ActionScript
2. Development
3. MouseEvent

Add mouse up and down listener

 
package {
  import flash.display.Sprite;
  import flash.events.MouseEvent;
  public class Main extends Sprite {
    
    private var isDrawing:Boolean;
    
    public function Main(  ) {
      graphics.lineStyle( 20, 0xFFCC33 );
      
      isDrawing = false;
      
      stage.addEventListener( MouseEvent.MOUSE_DOWN, startDrawing );
      stage.addEventListener( MouseEvent.MOUSE_MOVE, draw );
      stage.addEventListener( MouseEvent.MOUSE_UP, stopDrawing );
    }
    
    public function startDrawing( event:MouseEvent ):void {
      graphics.moveTo( mouseX, mouseY );
      isDrawing = true;
    }
    
    public function draw( event:MouseEvent ):void {
      if ( isDrawing ) {
        graphics.lineTo( mouseX, mouseY );  
      }
    }
    
    public function stopDrawing( event:MouseEvent ):void {
      isDrawing = false;
    }
    
  }
}

        

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