PictureBox控件提供了更多的功能和绘图的方法。可以利用PictureBox控件提供的方法在其上面绘制图形，还可以把PictureBox控件作为容器，将其他控件放在其中，从而实现分组的效果。-More functionality provided by the PictureBox control and the method of drawing. Can use the PictureBox control methods in the graph above, you can also put the PictureBox control as a container, put the other controls, so as to realize the effect of the group.