public function __get($strName)
 {
     switch ($strName) {
         case 'DeltaX':
             if ($this->aryOriginalSize) {
                 return $this->aryNewSize['width'] - $this->aryOriginalSize['width'];
             } else {
                 return 0;
             }
         case 'DeltaY':
             if ($this->aryOriginalSize) {
                 return $this->aryNewSize['height'] - $this->aryOriginalSize['height'];
             } else {
                 return 0;
             }
         default:
             try {
                 return parent::__get($strName);
             } catch (QCallerException $objExc) {
                 $objExc->IncrementOffset();
                 throw $objExc;
             }
     }
 }