C#中实现代码说明:123456789101112private void HideFlag(){MxDrawResbuf param;param = new MxDrawResbuf(); // 1是标志的id,由ExApp_AddFlag函数返回param.AddLong(1); // 0表标志隐藏标志,非0显示标志param.AddLong(0);axMxDrawX1.CallEx("ExApp_ShowFlag", param);}效果展示: