简易的画图程序，基于VB源代码实现可先把画笔颜色、设置画笔尺寸、先把所画的图形，包括矩形、圆形和直线三种模式，画错了可清除画布，画完可保存图像。-Simple paint program, the first brush color, set the brush size based on the VB source code, graphics drawn by the first three modes, including rectangular, circular and straig