struktur WLAN_RADIO_STATE (wlanapi.h)
Struktur WLAN_RADIO_STATE menentukan status radio pada daftar jenis lapisan fisik (PHY).
Sintaks
typedef struct _WLAN_RADIO_STATE {
DWORD dwNumberOfPhys;
WLAN_PHY_RADIO_STATE PhyRadioState[WLAN_MAX_PHY_INDEX];
} WLAN_RADIO_STATE, *PWLAN_RADIO_STATE;
Anggota
dwNumberOfPhys
Jumlah indeks PHY yang valid di anggota PhyRadioState .
PhyRadioState[WLAN_MAX_PHY_INDEX]
Array struktur WLAN_PHY_RADIO_STATE yang menentukan status radio sejumlah indeks PHY. Hanya entri dwNumberOfPhys pertama dalam array ini yang valid.
Keterangan
Struktur WLAN_RADIO_STATE digunakan dengan fungsi WlanQueryInterface saat parameter OpCode diatur ke wlan_intf_opcode_radio_state. Jika panggilan berhasil, parameter ppData menunjuk ke struktur WLAN_RADIO_STATE .
Anggota struktur WLAN_PHY_RADIO_STATE dalam struktur WLAN_RADIO_STATE dapat digunakan dengan fungsi WlanSetInterface ketika parameter OpCode diatur ke wlan_intf_opcode_radio_state untuk mengubah status radio.
Struktur WLAN_PHY_RADIO_STATE juga digunakan untuk pemberitahuan oleh modul khusus media (MSM) ketika status radio berubah. Aplikasi mendaftar untuk menerima pemberitahuan MSM dengan memanggil fungsi WlanRegisterNotification dengan parameter dwNotifSource yang diatur ke nilai yang menyertakan WLAN_NOTIFICATION_SOURCE_MSM. Untuk informasi selengkapnya tentang pemberitahuan ini, lihat struktur WLAN_NOTIFICATION_DATA dan referensi enumerasi WLAN_NOTIFICATION_MSM .
Contoh
Contoh berikut menghitung antarmuka LAN nirkabel di komputer lokal, meminta setiap antarmuka untuk WLAN_RADIO_STATE pada antarmuka, dan mencetak nilai dari struktur WLAN_RADIO_STATE yang diambil.
#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;
}
Persyaratan
| Persyaratan | Nilai |
|---|---|
| Klien minimum yang didukung | Windows Vista [hanya aplikasi desktop] |
| Server minimum yang didukung | Windows Server 2008 [hanya aplikasi desktop] |
| Header | wlanapi.h |
Lihat juga
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