1.在Default属性里面要添加滚动条的资源
<Default name="VScrollBar" value="button1normalimage="file='scrollbar.png' source='0,90,16,106' mask='#FFFF00FF'" button1hotimage="file='scrollbar.png' source='18,90,34,106' mask='#FFFF00FF'" button1pushedimage="file='scrollbar.png' source='36,90,52,106' mask='#FFFF00FF'" button1disabledimage="file='scrollbar.png' source='54,90,70,106' mask='#FFFF00FF'" button2normalimage="file='scrollbar.png' source='0,108,16,124' mask='#FFFF00FF'" button2hotimage="file='scrollbar.png' source='18,108,34,124' mask='#FFFF00FF'" button2pushedimage="file='scrollbar.png' source='36,108,52,124' mask='#FFFF00FF'" button2disabledimage="file='scrollbar.png' source='54,108,70,124' mask='#FFFF00FF'" thumbnormalimage="file='scrollbar.png' source='0,126,16,142' corner='2,2,2,2' mask='#FFFF00FF'" thumbhotimage="file='scrollbar.png' source='18,126,34,142' corner='2,2,2,2' mask='#FFFF00FF'" thumbpushedimage="file='scrollbar.png' source='36,126,52,142' corner='2,2,2,2' mask='#FFFF00FF'" thumbdisabledimage="file='scrollbar.png' source='54,126,70,142' corner='2,2,2,2' mask='#FFFF00FF'" railnormalimage="file='scrollbar.png' source='0,144,16,160' corner='2,2,2,2' mask='#FFFF00FF'" railhotimage="file='scrollbar.png' source='18,144,34,160' corner='2,2,2,2' mask='#FFFF00FF'" railpushedimage="file='scrollbar.png' source='36,144,52,160' corner='2,2,2,2' mask='#FFFF00FF'" raildisabledimage="file='scrollbar.png' source='54,144,70,160' corner='2,2,2,2' mask='#FFFF00FF'" bknormalimage="file='scrollbar.png' source='0,162,16,178' corner='2,2,2,2' mask='#FFFF00FF'" bkhotimage="file='scrollbar.png' source='18,162,34,178' corner='2,2,2,2' mask='#FFFF00FF'" bkpushedimage="file='scrollbar.png' source='36,162,52,178' corner='2,2,2,2' mask='#FFFF00FF'" bkdisabledimage="file='scrollbar.png' source='54,162,70,178' corner='2,2,2,2' mask='#FFFF00FF'" " /><Default name="VScrol