宿舍用手机连wifi总是要用浏览器登录联通的wlan登陆页面，无奈手机太挫内存只有512M，开个网页再干其他的事情就卡的要死，所以果断下载了个wifi共享精灵。用了一次就果断卸载了，为啥呢？竟然有广告，受不了啊。正好在学VC++ 算了自己做一个吧。 
关于无线承载网络
无线承载网络(Wireless Hosted Network)是指安装有无线局域网服务的Windows 7和Windows Server 2008 R2所提供的一种WLAN功能，具备两项主要功能：
第一、把一个物理无线网卡虚拟化成一个或多个虚拟无线网卡，称为虚拟的WiFi。
第二、借助无线网卡把当前接网络虚拟成为一个基于软件的无线接入点，称为虚拟AP或软AP。
=========================万恶的分割线===========================
项目需要包含wlanapi.h 头文件和wlanapi.lib 库
备注：测试环境win7_64,建议关闭一些安全软件，（比如我测试的时候忘了关comodo导致防火墙总是拒绝其他设备的连接）。
=============================================================
功能不复杂，用到的主要函数有下面几个
1.调用WlanOpenHandled得到一个连接hClientHandle，下面的操作都要用到这个连接。当然程序退出的时候记得调用WlanCloseHandle关闭这个连接。
DWORD WINAPI WlanOpenHandle(
_In_ DWORD dwClientVersion,
_Reserved_ PVOID pReserved,
_Out_ PDWORD pdwNegotiatedVersion,
_Out_ PHANDLE phClientHandle
);
DWORD WINAPI WlanCloseHandle(
_In_ HANDLE hClientHandle,
_Reserved_ PVOID pReserved
);
2.下面的函数用来设置承载网络的一些属性。
DWORD WINAPI WlanHostedNetworkSetProperty(
_In_ HANDLE hClientHandle,
_In_ WLAN_HOSTED_NETWORK_OPCODE OpCode,
_In_ DWORD dwDataSize,
_In_ PVOID pvData,
_Out_opt_ PWLAN_HOSTED_NETWORK_REASON pFailReason,
_Reserved_ PVOID pvReserved
);typedef enum _WLAN_HOSTED_NETWORK_OPCODE {
wlan_hosted_network_opcode_connection_settings, //设置一些连接属性
wlan_hosted_network_opcode_security_settings, //设置安全属性
wlan_hosted_network_opcode_station_profile, //query the wireless Hosted Network station profile
wlan_hosted_network_opcode_enable //query or set the wireless Hosted Network enabled flag
} WLAN_HOSTED_NETWORK_OPCODE, *PWLAN_HOSTED_NETWORK_OPCODE;
3.启用和禁用无线承载网络。
打开网络和共享中心 单击更改适配器设置，如果启用了无线承载网络 面板里面就会有描述为Microsoft Virtual WiFi Miniport Adapter的一个虚拟网卡。禁用之后这个虚拟网卡就会消失了。
当然只有启用了无线承载网络才能分享wifi啦
DWORD WINAPI WlanHostedNetworkForceStart(
_In_ HANDLE hClientHandle,
_Out_opt_ PWLAN_HOSTED_NETWORK_REASON pFailReason,
_Reserved_ PVOID pvReserved
);
DWORD WINAPI WlanHostedNetworkForceStop(
_In_ HANDLE hClientHandle,
_Out_opt_ PWLAN_HOSTED_NETWORK_REASON pFailReason,
_Reserved_ PVOID pvReserved
);
4.连接和断开网络
DWORD WINAPI WlanHostedNetworkStartUsing(
_In_ HANDLE hClientHandle,
_Out_opt_ PWLAN_HOSTED_NETWORK_REASON pFailReason,
_Reserved_ PVOID pvReserved
);
DWORD WINAPI WlanHostedNetworkStopUsing(
_In_ HANDLE hClientHandle,
_Out_opt_ PWLAN_HOSTED_NETWORK_REASON pFailReason,
_Reserved_ PVOID pvReserved
);
5.用来查询承载网络的网络状况。
DWORD WINAPI WlanHostedNetworkQueryStatus(
_In_ HANDLE hClientHandle,
_Out_ PWLAN_HOSTED_NETWORK_STATUS *ppWlanHostedNetworkStatus,
_Reserved_ PVOID pvReserved
);
typedef struct _WLAN_HOSTED_NETWORK_STATUS {
WLAN_HOSTED_NETWORK_STATE HostedNetworkState;
GUID IPDeviceID;
DOT11_MAC_ADDRESS wlanHostedNetworkBSSID;
DOT11_PHY_TYPE dot11PhyType;
ULONG ulChannelFrequency;
DWORD dwNumberOfPeers; //已连接的节点数目
WLAN_HOSTED_NETWORK_PEER_STATE PeerList[1]; //存放节点信息的数组
} WLAN_HOSTED_NETWORK_STATUS, *PWLAN_HOSTED_NETWORK_STATUS;
typedef struct _WLAN_HOSTED_NETWORK_PEER_STATE {
DOT11_MAC_ADDRESS PeerMacAddress; //节点设备的MAC地址
WLAN_HOSTED_NETWORK_PEER_AUTH_STATE PeerAuthState; //节点的认证状态
} WLAN_HOSTED_NETWORK_PEER_STATE, *PWLAN_HOSTED_NETWORK_PEER_STATE;
调用WlanHostedNetworkQueryStatus将得到一个WLAN_HOSTED_NETWORK_STATUS结构体，就可以查询一些网络基本信息了，比如dwNumberOfPeers连接到这个网络的节点数，PeerList数组存放着对应节点的详细信息，包括MAC地址和认证状态。
6.用来设置密码
注意密码长度必须 大于8 小于63 否则会调用失败
DWORD WINAPI WlanHostedNetworkSetSecondaryKey(
_In_ HANDLE hClientHandle,
_In_ DWORD dwKeyLength,
_In_ PUCHAR pucKeyData,
_In_ BOOL bIsPassPhrase,
_In_ BOOL bPersistent,
_Out_opt_ PWLAN_HOSTED_NETWORK_REASON pFailReason,
_Reserved_ PVOID pvReserved
);
======================贴代码==========================
//WIFIMAIN.h 实现文件
#pragma once
#include <wlanapi.h>
#pragma comment(lib,"wlanapi.lib")
// WIFIMAIN
class WIFIMAIN : public CWnd
{
DECLARE_DYNAMIC(WIFIMAIN)
public:
WIFIMAIN();
virtual ~WIFIMAIN();
protected:
DECLARE_MESSAGE_MAP()
private:
bool allow;
bool start;
HANDLE hClient;
public:
int Init(void);
int AllowHostedNetWork(void);
int DisallowHostedNetWork(void);
int StartHostedNetWork(void);
int StopHostedNetWork(void);
bool isStart(void);
bool isAllow(void);
int Resume(void);
int getpeernumber(void);
int SetKEY(CString key);
int SetSSID(CString ssidname);
};
// WIFIMAIN.cpp : 实现文件
//
#include "stdafx.h"
#include "wifi共享1028.h"
#include "WIFIMAIN.h"
// WIFIMAIN
IMPLEMENT_DYNAMIC(WIFIMAIN, CWnd)
WIFIMAIN::WIFIMAIN()
: allow(false)
, start(false)
{
Init();
}
WIFIMAIN::~WIFIMAIN()
{
StopHostedNetWork();
WlanCloseHandle(hClient, NULL);
}
BEGIN_MESSAGE_MAP(WIFIMAIN, CWnd)
END_MESSAGE_MAP()
// WIFIMAIN 消息处理程序
int WIFIMAIN::Init(void)
{
DWORD dwCurVersion = 0;
DWORD dwResult = 0;
dwResult = WlanOpenHandle(WLAN_API_VERSION, NULL, &dwCurVersion, &hClient);
if( ERROR_SUCCESS != dwResult )
{
return -1;
}
BOOL bIsAllow = true;
WLAN_HOSTED_NETWORK_REASON dwFailedReason;
dwResult = WlanHostedNetworkSetProperty(hClient,
wlan_hosted_network_opcode_enable,
sizeof(BOOL),
&bIsAllow,
&dwFailedReason,
NULL);
if( ERROR_SUCCESS != dwResult )
{
return -2;
}
return 0;
}
int WIFIMAIN::AllowHostedNetWork(void)
{
PWLAN_HOSTED_NETWORK_REASON pFailReason = NULL;
DWORD dwResult= 0;
dwResult=WlanHostedNetworkForceStart(hClient,pFailReason,NULL);
if( dwResult != ERROR_SUCCESS )
{
return -1;
}
allow=true;
return 0;
}
int WIFIMAIN::DisallowHostedNetWork(void)
{
PWLAN_HOSTED_NETWORK_REASON pFailReason = NULL;
DWORD dwResult= 0;
dwResult=WlanHostedNetworkForceStop(hClient,pFailReason,NULL);
if( dwResult != ERROR_SUCCESS )
{
return -1;
}
allow=false;
return 0;
}
int WIFIMAIN::StartHostedNetWork(void)
{
PWLAN_HOSTED_NETWORK_REASON pFailReason = NULL;
DWORD dwResult= 0;
dwResult=WlanHostedNetworkStartUsing(hClient,pFailReason,NULL);
if( dwResult != ERROR_SUCCESS )
{
return -1;
}
start=true;
return 0;
}
int WIFIMAIN::StopHostedNetWork(void)
{
PWLAN_HOSTED_NETWORK_REASON pFailReason = NULL;
DWORD dwResult= 0;
dwResult=WlanHostedNetworkStopUsing(hClient,pFailReason,NULL);
if( dwResult != ERROR_SUCCESS )
{
return -1;
}
start=false;
return 0;
}
bool WIFIMAIN::isStart(void)
{
return start;
}
bool WIFIMAIN::isAllow(void)
{
return allow;
}
int WIFIMAIN::Resume(void)
{
DWORD dwResult = 0;
BOOL bIsAllow = false;
WLAN_HOSTED_NETWORK_REASON dwFailedReason;
dwResult = WlanHostedNetworkSetProperty(hClient,
wlan_hosted_network_opcode_enable,
sizeof(BOOL),
&bIsAllow,
&dwFailedReason,
NULL);
if( ERROR_SUCCESS != dwResult )
{
return -2;
}
return 0;
}
int WIFIMAIN::getpeernumber(void)
{
PWLAN_HOSTED_NETWORK_STATUS ppWlanHostedNetworkStatus=NULL;
int retval = WlanHostedNetworkQueryStatus(hClient,&ppWlanHostedNetworkStatus,NULL);
if( retval != ERROR_SUCCESS ){
return -1;
}
return ppWlanHostedNetworkStatus->dwNumberOfPeers;
}
int WIFIMAIN::SetKEY(CString key)
{
char chkey[64];
int index;
for(index=0; index<key.GetLength(); index++ )
{
chkey[index] = key[index];
}
chkey[index]='\0';
WLAN_HOSTED_NETWORK_REASON dwFailedReason;
DWORD dwResult= 0;
dwResult = WlanHostedNetworkSetSecondaryKey(hClient,
strlen((const char*)chkey) + 1,
(PUCHAR)chkey,
TRUE,
FALSE,
&dwFailedReason,
NULL);
if(ERROR_SUCCESS != dwResult)
{
return -1;
}
return 0;
}
int WIFIMAIN::SetSSID(CString ssidname)
{
char chname[64];
int index;
for(index=0; index<ssidname.GetLength(); index++ )
{
chname[index] = ssidname[index];
}
chname[index]='\0';
DWORD dwResult= 0;
WLAN_HOSTED_NETWORK_REASON dwFailedReason;
WLAN_HOSTED_NETWORK_CONNECTION_SETTINGS cfg;
memset(&cfg, 0, sizeof(WLAN_HOSTED_NETWORK_CONNECTION_SETTINGS));
memcpy( cfg.hostedNetworkSSID.ucSSID, chname, strlen(chname) ) ;
cfg.hostedNetworkSSID.uSSIDLength = strlen((const char*)cfg.hostedNetworkSSID.ucSSID);
cfg.dwMaxNumberOfPeers = 20; //最大连接数
dwResult = WlanHostedNetworkSetProperty(hClient,
wlan_hosted_network_opcode_connection_settings,
sizeof(WLAN_HOSTED_NETWORK_CONNECTION_SETTINGS),
&cfg,
&dwFailedReason,
NULL);
if(ERROR_SUCCESS != dwResult )
{
return -1;
}
return 0;
}
==========================================
这里只贴出了比较重要的代码，其他的略去了，需要的可以去我的网盘下载完整项目代码。
代码和程序下载：http://pan.baidu.com/s/1GI0kG
程序只完成了基本功能，还有待完善，但是学习的过程还是很有意思的。
下面是几篇关于无线承载网络比较不错的文章，当时对我帮助很大。
关于无线承载网络http://blog.wbpluto.com/2010/08/about-wireless-hosted-network/
==========================================
2014-3-14 修改：
实在抱歉，以前写的时候有些东西没有补充完整，导致让好多网友走了弯路，今天把大家问的几个较多的问题回复补充一下，以免给大家在带来困扰。
1.我写程序的时候环境是win7 64位，vs2010.需要用到的某些api可能在xp下无法编译。
2.这个版本的程序还没有加入 自动设置网络连接共享的功能，需要手动设置在网卡（接入internet的网卡）属性中设置网络连接共享，相关api参考http://msdn.microsoft.com/en-us/library/bb525393%28v=vs.85%29.aspx
3.面板上的开机自动启动代码没有加入，发布的时候都忘记取消这个控件了，哎 犯罪了。
4.win8 下会提示某些运行库找不到，这个属于兼容性问题，属性中设置以win7兼容模式运行即可。部分电脑需要以管理员权限运行。（估计是启用虚拟网卡的api需要较高权限吧）
本来准备过年就写个新版本的，但是开学太忙就一直拖着没开始。等时间多了我会针对大家反映的问题推出一个新的版本。
