C#打印条形码，部分代码释义：

　　将一幅位图从一个设备场景复制到另一个

　　目标设备场景

　　 /// 对目标DC中目标矩形左上角位置进行描述的那个点,用目标DC的逻辑X坐标表示

　　 /// 对目标DC中目标矩形左上角位置进行描述的那个点,用目标DC的逻辑Y坐标表示

　　 /// 欲传输图象的宽度

　　 /// 欲传输图象的高度

　　 /// 源设备场景,如光栅运算未指定源，则应设为0

　　 /// 对源DC中源矩形左上角位置进行描述的那个点用源DC的逻辑X坐标表示

　　 /// 对源DC中源矩形左上角位置进行描述的那个点用源DC的逻辑Y坐标表示

　　 /// 传输过程要执行的光栅运算

　　 /// 非零表示成功，零表示失败 -C# print bar codes, part of the code definitions: a bitmap scene copied from one device to another target device scene///describe the position of the upper-left corner of the destination rectangle on the destination DC that point, expressed in logical X coordinate of the destination DC///that points to describe the position of the upper-left corner of the destination rectangle on the destination DC///you want the width of the image///you want to image height///source device scene, the logic Y coordinates of the destination DC said , such as raster operation did not specify the source that points to describe the upper left corner of the source rectangle position on the source DC should be set to 0////// logical X coordinate of the source DC source rectangle in the upper left corner of the source DC describe that point the logic Y coordinates of the source DC///raster operation to be performed by transmission///non-zero indicates success, zero indicates failure