左右两个列表框，中间是四个命令按钮，点击第一个，将左边列表框的内容全部移动到右边，第二个将选中的移到右边，第三个将右侧选中的移到左边，第四个将右侧全部移到左边。-Around the two list boxes, the middle is one of the four command button, click the first in a list box to the left of the contents of all the moving to the right, the se