Categories: Lang-CN | WLAN

This page was last modified 07:29, 28 June 2007.

From Forum Nokia Wiki

• 设备, 软件 版本：

S60 3rd Edition

• 说明：

搜索可用的WLAN网络：我该如何获得网络的SSID和信号强度？

• 详细描述：

搜索WLAN可用网络时，可以通过Connection Moniter Server API来获得他们实际的信号强度。 下面是该API的一个使用示例：

#include <rconnmon.h>
 
void CWlanTest:: ListNetworksAndSignalL(CDesCArraySeg& aNetworks)
 
{
 
    _LIT(KNetInfo, "Network: %S\tSignal: %d");
 
    TBuf<32> netName;
 
    TBuf<100> line;
 
    RConnectionMonitor monitor;
 
    TPckgBuf<TConnMonNetworkNames> pkgNetworks;
 
    // establish connection with the monitor server
 
    monitor.ConnectL();
 
    // prepare leave clean-up
 
    CleanupClosePushL(monitor);
 
    TRequestStatus status;
 
    // get the list of available networks
 
    monitor.GetPckgAttribute(EBearerIdWLAN, 0, KNetworkNames, pkgNetworks, status); 
 
    // suspend thread until the info is retrieved
 
    // production code should use active objects
 
    User::WaitForRequest( status ) ;
 
    // leave if the asynchronous method returned an error
 
    User::LeaveIfError(status.Int());
 
    //  reset networks list
 
    aNetworks.Reset();
 
    // add retrieved networks to the list
 
    for(TUint i=0; i<pkgNetworks().iCount; i++)
 
    {
 
        netName.Copy(pkgNetworks().iNetwork[i].iName); 
 
        line.Format(KNetInfo, &netName, pkgNetworks().iNetwork[i].iSignalStrength);
 
        aNetworks.AppendL(line);
 
    }
 
    // close server session
 
    CleanupStack::PopAndDestroy(&monitor);
 
}

Note:

• - Link against: ConnMon.lib

• - S60 3rd Edition-specific capability needed: NetworkServices