你想有一个选择颜色的下拉列表吗？胜至你想有一个选择图形的下拉列表吗？这个类是你所需的，下载一个回去试试，分析分析一定-Would you like to have a drop-down list to choose the color of it? You want to win to have a choice of graphical drop-down list? This class is required for you, go back and try to download an