这几行c++的代码怎么改成c#的？？？？先谢了

[ycxdy]

#define DRAWFUN(x) void (CALLBACK* x)(long nPort,HDC hDc,LONG nUser)


typedef void (*LOGRECORD_CALLBACK)(char *str, void *context);
typedef int (*STREAM_READ_CALLBACK)(ULONG channelNumber, void *context);
typedef int (*STREAM_DIRECT_READ_CALLBACK)(ULONG channelNumber,void *DataBuf,DWORD Length,int FrameType,void *context);

[xgen007]

c#没有宏的，用静态方法吧

下面几个typedef语法不对，少了个typename；