一个增强型PictureBox控件，主要为PictureBox增加了鼠标拖动以及图片缩放功能-An enhanced PictureBox control, mainly to increase the mouse to drag the PictureBox and picture zoom

该源码可以使一个16*16的LED显示屏显示动态图片，可以使文字上下左右移动。也可以使用光笔点亮、擦除、拖动LED上的点。也可以使用光笔写的字上下左右移动。-The source code can make a 16* 16 LED display shows the dynamic picture can make the text up and down and move around. You can also use the light pen lights, erase, drag t