说明：  VB 的PictureBox控件的使用详解。包括属性，方法，事件。是学习使用该控件的极好资料，自己学习过程收集摘录，与大家共享
(VB' s PictureBox control, the use of Xiang Jie. Including properties, methods, events. Is to learn to use the control' s excellent information on their own learning process to collect an extract, and share)