【转载】张远山谈：Windows Mobile 下使用C#进行GPRS、CDMA开发

bell791002 2009-02-26 06:08:21

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转载于：http://blog.csdn.net/zhyuanshan/archive/2009/02/26/3940125.aspx
作者：张远山

正文：

有关GPRS、CDMA开发的文章网上已经有不少，但是由于Windows Mobile SDK提供的GPRS、CDMA连接操作的库只有C++版本的（即Connection Manager API），网上的文章大多数都是C++版本的，尽管也有C#编写的但是大多封装的有些不对并且没有经过很好的测试，本文在网络已有的资料上整理出如何用C#进行GPRS、CDMA开发。

您可以到一下站点免费下载作者的手机开发教程：http://www.itcast.net/course/detail/561

参考文献：
http://www.vckbase.com/document/viewdoc/?id=1803

http://www.cnblogs.com/jsjkandy/archive/2008/08/06/1262445.html

http://blogs.msdn.com/anthonywong/archive/2006/03/13/550686.aspx

开发环境
Visual Studio 2005

Windows Mobile 6 SDK Professional

头文件封装
我们要用到Windows Mobile SDK的一个C++的头文件Connmgr.h，它的路径是：c:\program files\windows mobile 6 sdk\pocketpc\include\armv4i\connmgr.h，首先要用C#重新定义要用到的这个头文件的常量、结构和外部函数声明。

有关C#平台封送的更多说明可以参考MSDN：

http://msdn.microsoft.com/zh-cn/library/fzhhdwae(VS.80).aspx

常量声明：





const int S_OK = 0;



        const uint CONNMGR_PARAM_GUIDDESTNET = 0x1;



        const uint CONNMGR_PRIORITY_USERINTERACTIVE = 0x08000;



        const uint INFINITE = 0xffffffff;



        const uint CONNMGR_STATUS_CONNECTED = 0x10;



        const int CONNMGR_MAX_DESC = 128;    // @constdefine Max size of a network description



 



        const int CONNMGR_FLAG_PROXY_HTTP = 0x1; // @constdefine HTTP Proxy supported



        const int CONNMGR_FLAG_PROXY_WAP = 0x2; // @constdefine WAP Proxy (gateway) supported



        const int CONNMGR_FLAG_PROXY_SOCKS4 = 0x4; // @constdefine SOCKS4 Proxy supported



        const int CONNMGR_FLAG_PROXY_SOCKS5 = 0x8; // @constdefine SOCKS5 Proxy supported



 



        const UInt16 IDC_WAIT = 32514;



        const UInt16 IDC_ARROW = 32512;

结构封送声明：

C++原型：

[code=C++]

typedef struct _CONNMGR_CONNECTIONINFO

{

DWORD cbSize; // @field Size of this structure

DWORD dwParams; // @field Valid parms, set of CONNMGR_PARAM_*

DWORD dwFlags; // @field Connection flags, set of CONNMGR_FLAG_*

DWORD dwPriority; // @field Priority, one of CONNMGR_PRIORITY_*

BOOL bExclusive; // @field Connection is exclusive, see comments

BOOL bDisabled; // @field Don't actually connect

GUID guidDestNet; // @field GUID of network to connect to

HWND hWnd; // @field hWnd to post status change messages to

UINT uMsg; // @field Msg to use when posting status changes

LPARAM lParam; // @field lParam to use when posting status changes

ULONG ulMaxCost; // @field Max acceptable cost of connection

ULONG ulMinRcvBw; // @field Min acceptable receive bandwidth of connection

ULONG ulMaxConnLatency; // @field Max acceptable connect latency

} CONNMGR_CONNECTIONINFO;

typedef struct _CONNMGR_DESTINATION_INFO

{

GUID guid; // @field GUID associated with network

TCHAR szDescription[CONNMGR_MAX_DESC]; // @field Description of network

BOOL fSecure; // @field Is it OK to allow multi-homing on the network

} CONNMGR_DESTINATION_INFO;

typedef struct _GUID { // size is 16

DWORD Data1;

WORD Data2;

WORD Data3;

BYTE Data4[8];

} GUID;

[/code]

C#声明





[StructLayout(LayoutKind.Sequential)]



        public struct CONNMGR_CONNECTIONINFO



        {



            public uint cbSize;



            public uint dwParams;



            public uint dwFlags;



            public uint dwPriority;



            public int bExclusive;



            public int bDisabled;



            public GUID guidDestNet;



            public IntPtr hWnd;



            public uint uMsg;



            public uint lParam;



            public uint ulMaxCost;



            public uint ulMinRcvBw;



            public uint ulMaxConnLatency;



        }



 



        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]



        public struct CONNMGR_DESTINATION_INFO



        {



            public GUID guid;  // @field GUID associated with network



            [MarshalAs(UnmanagedType.ByValTStr,SizeConst = CONNMGR_MAX_DESC)]



            public string szDescription;  // @field Description of network



            public int fSecure; // @field Is it OK to allow multi-homing on the network



        }



 



        public struct GUID



        {          // size is 16



            public uint Data1;



            public UInt16 Data2;



            public UInt16 Data3;



            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]



            public byte[] Data4;



        }

函数封送声明：

C++原型：

请参考connmgr.h

C#声明：





[DllImport("coredll.dll")]



        public static extern uint GetTickCount();



 



        [DllImport("coredll.dll")]



        public static extern uint WaitForSingleObject(IntPtr hHandle,uint dwMilliseconds);



 



        [DllImport("cellcore.dll")]



        public static extern int ConnMgrMapURL(string pwszURL, ref GUID pguid, ref uint pdwIndex);



 



        [DllImport("cellcore.dll")]



        public static extern int ConnMgrEstablishConnectionSync(ref CONNMGR_CONNECTIONINFO ci, ref IntPtr phConnection, uint dwTimeout, ref uint pdwStatus);



 



        [DllImport("cellcore.dll")]



        private static extern IntPtr ConnMgrApiReadyEvent();



 



        [DllImport("cellcore.dll")]



        public static extern int ConnMgrReleaseConnection(IntPtr hConnection, int bCache);



 



        [DllImport("cellcore.dll")]



        public static extern int ConnMgrEnumDestinations(int nIndex,ref CONNMGR_DESTINATION_INFO pDestInfo);



 



        [DllImport("cellcore.dll")]



        public static extern int ConnMgrConnectionStatus(IntPtr hConnection,    // @parm Handle to connection, returned from ConnMgrEstablishConnection



            ref uint pdwStatus       // @parm Returns current connection status, one of CONNMGR_STATUS_*



            );



 



        [DllImport("coredll.dll")]



        private static extern int CloseHandle(IntPtr hObject);

这里参考http://www.vckbase.com/document/viewdoc/?id=1803例子用C#封装一个类库，并实现类似的Demo。运行界面如下图所示：

更多内容请查看原文：http://blog.csdn.net/zhyuanshan/archive/2009/02/26/3940125.aspx

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