用c#开发的画图板程序，能设置画笔画刷颜色，画笔宽度，画刷类型。可以输入文字，鼠标拖拽绘制矩形，圆，椭圆，三角形，鼠标自划线，等图形。并能设置背景图片，能设置背景透明度，绘制后可保存成图片。-Developed with c# drawing board procedures, setting the brush strokes painting color, pen width, brush type. Can enter text, drag the mouse draw the rectangle, circle, ellipse, triangle, right from the dash, and other graphics. And can set the background image, to set the background transparency and draw into the picture after the save.