开发环境:WinXP Pro(SP2英文版) + VS.NET 2003中文版
接口库版本: CMPP2.0 API第二版(V2.6)
该例程演示了如何在C#里面调用VC6.0开发的C#回调函数的API应用,而且回调函数的参数包含结构体,使用C#的委托和IntPtr方法实现。
由于我使用C#刚两天,这是我写的***个C#程序,因此例程写的可能有点粗糙,但是编译和运行完全没有问题。
CMPP2.0的API应用封装成了标准C调用的方法,提供以下三个接口,使用的时候只要有CMPPAPI.dll就可以了。
在C#里面如何调用API应用,如何声明结构体,如何使用委托实现C#回调函数,如何实现使用自定义结构体作为参数的C#回调函数,请仔细查看例程源码。注意:CMPPAPI.dll要和可执行文件放到同一个目录下,或者放到可执行文件能找到的目录,或者放到系统目录下(如:C:\windows\system32)。
下面是C#下面的完整的调用代码
- //Class1.cs
- using System;
- // 该名称空间包含了在Visual C#中调用API的一些必要集合
- using System.Runtime.InteropServices;
- // 使用Sleep方法需要的命名空间
- using System.Threading;
- namespace CMPPAPI_Sample_CSharp
- {
- [StructLayout(LayoutKind.Sequential, Pack = 1)]
- public struct CMPP_HEAD
- {
- public uint nTotalLength;
- public uint nCommandId;
- public uint nSeqId;
- }
- [StructLayout(LayoutKind.Sequential, Pack = 1)]
- public struct CMPP_CONNECT
- {
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 6)]
- public string sSourceAddr;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
- public string sAuthSource;
- public byte cVersion;
- public uint nTimeStamp;
- }
- [StructLayout(LayoutKind.Sequential, Pack = 1)]
- public struct CMPP_CONNECT_RESP
- {
- public byte uchStatus;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
- public string sAuthISMG;
- public byte cVersion;
- }
- [StructLayout(LayoutKind.Sequential, Pack = 1)]
- public struct CMPP_SUBMIT_RESP
- {
- public long nMsgid;
- public byte uchResult;
- }
- [StructLayout(LayoutKind.Sequential, Pack = 1)]
- public struct CMPP_STATUS_REPORT
- {
- public long nMsgid;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 7)]
- public string sStat;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)]
- public string sSubmitTime;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)]
- public string sDoneTime;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 21)]
- public string sDestTerminalId;
- public uint nSmscSeq;
- }
- [StructLayout(LayoutKind.Sequential, Pack = 1)]
- public struct CMPP_MO_MSGCONTENT
- {
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 160)]
- public string sMsgcontent;
- public CMPP_STATUS_REPORT csr;
- }
- [StructLayout(LayoutKind.Sequential, Pack = 1)]
- public struct CMPP_DELIVER
- {
- public long nMsgid;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 21)]
- public string sDestid;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)]
- public string sServiceid;
- public byte uchTppid;
- public byte uchTpudhi;
- public byte uchMsgfmt;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 21)]
- public string sSrcterminalid;
- public byte uchRegisteredDelivery;
- public byte uchMsglength;
- public CMPP_MO_MSGCONTENT mo_msg;
- [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
- public string sReserved;
- }
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