用DELPHI实现的一个OCX(用于读取或写入磁盘文件)，内附用c#进行调用的测试小例子(功能很简单，但是可以说明大体的调用方式)-Use of the DELPHI an OCX (for read or write to a disk file), containing a small example test call with c# (the function is very simple, but can explain the general call)