wlanapi.h) (WLAN_RADIO_STATE 结构
WLAN_RADIO_STATE 结构指定物理层列表上的无线电状态 (PHY) 类型。
语法
typedef struct _WLAN_RADIO_STATE {
DWORD dwNumberOfPhys;
WLAN_PHY_RADIO_STATE PhyRadioState[WLAN_MAX_PHY_INDEX];
} WLAN_RADIO_STATE, *PWLAN_RADIO_STATE;
成员
dwNumberOfPhys
PhyRadioState 成员中的有效 PHY 索引数。
PhyRadioState[WLAN_MAX_PHY_INDEX]
一个WLAN_PHY_RADIO_STATE结构的数组，这些结构指定多个 PHY 索引的无线电状态。 只有此数组中的前 一个 dwNumberOfPhys 条目有效。
注解
当 OpCode参数设置为wlan_intf_opcode_radio_state 时，WLAN_RADIO_STATE 结构与 WlanQueryInterface 函数一起使用。 如果调用成功，则 ppData 参数指向 WLAN_RADIO_STATE 结构。
当 OpCode 参数设置为 wlan_intf_opcode_radio_state 以更改无线电状态时，WLAN_RADIO_STATE 结构中的WLAN_PHY_RADIO_STATE结构成员可与 WlanSetInterface 函数一起使用。
当无线电状态发生更改时 ， WLAN_PHY_RADIO_STATE结构还用于媒体特定模块 (MSM) 的通知。 应用程序通过调用 WlanRegisterNotification 函数来注册以接收 MSM 通知，并将 dwNotifSource 参数设置为包含 WLAN_NOTIFICATION_SOURCE_MSM的值。 有关这些通知的详细信息，请参阅 WLAN_NOTIFICATION_DATA 结构和 WLAN_NOTIFICATION_MSM 枚举参考。
示例
以下示例枚举本地计算机上的无线 LAN 接口，查询接口上的 每个接口WLAN_RADIO_STATE ，并从检索到 的 WLAN_RADIO_STATE 结构中输出值。
注意 如果未安装并启动无线 LAN 服务，此示例将无法在 Windows Server 2008 和 Windows Server 2008 R2 上加载。
#ifndef UNICODE
#define UNICODE
#endif
#include <windows.h>
#include <wlanapi.h>
#include <objbase.h>
#include <wtypes.h>
#include <stdio.h>
#include <stdlib.h>
// Need to link with Wlanapi.lib and Ole32.lib
#pragma comment(lib, "wlanapi.lib")
#pragma comment(lib, "ole32.lib")
int wmain()
{
// Declare and initialize variables.
HANDLE hClient = NULL;
DWORD dwMaxClient = 2; //
DWORD dwCurVersion = 0;
DWORD dwResult = 0;
DWORD dwRetVal = 0;
int iRet = 0;
WCHAR GuidString[39] = { 0 };
unsigned int i;
// variables used for WlanEnumInterfaces
PWLAN_INTERFACE_INFO_LIST pIfList = NULL;
PWLAN_INTERFACE_INFO pIfInfo = NULL;
// variables used for WlanQueryInterfaces for opcode = wlan_intf_opcode_radio_state
PWLAN_RADIO_STATE pradioStateInfo = NULL;
DWORD radioStateInfoSize = sizeof (WLAN_RADIO_STATE);
WLAN_OPCODE_VALUE_TYPE opCode = wlan_opcode_value_type_invalid;
dwResult = WlanOpenHandle(dwMaxClient, NULL, &dwCurVersion, &hClient);
if (dwResult != ERROR_SUCCESS) {
wprintf(L"WlanOpenHandle failed with error: %u\n", dwResult);
return 1;
// You can use FormatMessage here to find out why the function failed
}
dwResult = WlanEnumInterfaces(hClient, NULL, &pIfList);
if (dwResult != ERROR_SUCCESS) {
wprintf(L"WlanEnumInterfaces failed with error: %u\n", dwResult);
return 1;
// You can use FormatMessage here to find out why the function failed
} else {
wprintf(L"Num Entries: %lu\n", pIfList->dwNumberOfItems);
wprintf(L"Current Index: %lu\n", pIfList->dwIndex);
for (i = 0; i < (int) pIfList->dwNumberOfItems; i++) {
pIfInfo = (WLAN_INTERFACE_INFO *) & pIfList->InterfaceInfo[i];
wprintf(L" Interface Index[%u]:\t %lu\n", i, i);
iRet =
StringFromGUID2(pIfInfo->InterfaceGuid, (LPOLESTR) & GuidString,
sizeof (GuidString) / sizeof (*GuidString));
// For c rather than C++ source code, the above line needs to be
// iRet = StringFromGUID2(&pIfInfo->InterfaceGuid, (LPOLESTR) &GuidString,
// sizeof(GuidString)/sizeof(*GuidString));
if (iRet == 0)
wprintf(L"StringFromGUID2 failed\n");
else {
wprintf(L" InterfaceGUID[%d]:\t %ws\n", i, GuidString);
}
wprintf(L" Interface Description[%d]: %ws", i, pIfInfo->strInterfaceDescription);
wprintf(L"\n");
wprintf(L" Interface State[%d]:\t ", i);
switch (pIfInfo->isState) {
case wlan_interface_state_not_ready:
wprintf(L"Not ready\n");
break;
case wlan_interface_state_connected:
wprintf(L"Connected\n");
break;
case wlan_interface_state_ad_hoc_network_formed:
wprintf(L"First node in a ad hoc network\n");
break;
case wlan_interface_state_disconnecting:
wprintf(L"Disconnecting\n");
break;
case wlan_interface_state_disconnected:
wprintf(L"Not connected\n");
break;
case wlan_interface_state_associating:
wprintf(L"Attempting to associate with a network\n");
break;
case wlan_interface_state_discovering:
wprintf(L"Auto configuration is discovering settings for the network\n");
break;
case wlan_interface_state_authenticating:
wprintf(L"In process of authenticating\n");
break;
default:
wprintf(L"Unknown state %ld\n", pIfInfo->isState);
break;
}
wprintf(L"\n");
dwResult = WlanQueryInterface(hClient,
&pIfInfo->InterfaceGuid,
wlan_intf_opcode_radio_state,
NULL,
&radioStateInfoSize,
(PVOID *) & pradioStateInfo, &opCode);
if (dwResult != ERROR_SUCCESS) {
wprintf(L"WlanQueryInterface failed with error: %u\n", dwResult);
dwRetVal = 1;
// You can use FormatMessage to find out why the function failed
} else {
wprintf(L" WLAN_RADIO_STATE for this interface\n");
wprintf(L" Number of valid PHYs:\t %u\n", pradioStateInfo->dwNumberOfPhys);
wprintf(L" Radio state:\n");
wprintf(L" Index of PHYs type[0]:\t %u\n",
pradioStateInfo->PhyRadioState[0].dwPhyIndex);
wprintf(L" Software radio state[0]:\t ");
switch (pradioStateInfo->PhyRadioState[0].dot11SoftwareRadioState) {
case dot11_radio_state_unknown:
wprintf(L"Unknown\n");
break;
case dot11_radio_state_on:
wprintf(L"On\n");
break;
case dot11_radio_state_off:
wprintf(L"Off\n");
break;
default:
wprintf(L"Other Unknown state %ld\n", pradioStateInfo->PhyRadioState[0].dot11SoftwareRadioState);
break;
}
wprintf(L" Hardware radio state[0]:\t ");
switch (pradioStateInfo->PhyRadioState[0].dot11HardwareRadioState) {
case dot11_radio_state_unknown:
wprintf(L"Unknown\n");
break;
case dot11_radio_state_on:
wprintf(L"On\n");
break;
case dot11_radio_state_off:
wprintf(L"Off\n");
break;
default:
wprintf(L"Other Unknown state %ld\n", pradioStateInfo->PhyRadioState[0].dot11HardwareRadioState);
break;
}
wprintf(L"\n");
}
}
}
if (pradioStateInfo != NULL) {
WlanFreeMemory(pradioStateInfo);
pradioStateInfo = NULL;
}
if (pIfList != NULL) {
WlanFreeMemory(pIfList);
pIfList = NULL;
}
return dwRetVal;
}
要求
| 要求 | 值 |
|---|---|
| 最低受支持的客户端 | Windows Vista [仅限桌面应用] |
| 最低受支持的服务器 | Windows Server 2008 [仅限桌面应用] |
| 标头 | wlanapi.h |