Fungsi WlanQueryInterface (wlanapi.h)
Catatan
Beberapa informasi berkaitan dengan produk yang telah dirilis sebelumnya, yang mungkin dimodifikasi secara substansial sebelum dirilis secara komersial. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Penting
API ini akan dipengaruhi oleh perubahan perilaku sistem operasi yang akan datang, yang direncanakan pada musim gugur 2024. Untuk informasi selengkapnya, lihat Perubahan perilaku API untuk akses dan lokasi Wi-Fi.
Fungsi WlanQueryInterface meminta berbagai parameter antarmuka tertentu.
Sintaks
DWORD WlanQueryInterface(
[in] HANDLE hClientHandle,
[in] const GUID *pInterfaceGuid,
[in] WLAN_INTF_OPCODE OpCode,
PVOID pReserved,
[out] PDWORD pdwDataSize,
[out] PVOID *ppData,
[out, optional] PWLAN_OPCODE_VALUE_TYPE pWlanOpcodeValueType
);
Parameter
[in] hClientHandle
Handel sesi klien, diperoleh dengan panggilan sebelumnya ke fungsi WlanOpenHandle .
[in] pInterfaceGuid
GUID antarmuka yang akan dikueri.
[in] OpCode
Nilai WLAN_INTF_OPCODE yang menentukan parameter yang akan dikueri. Tabel berikut mencantumkan konstanta yang valid bersama dengan jenis data parameter di ppData.
| WLAN_INTF_OPCODE | Jenis data ppData |
|---|---|
| wlan_intf_opcode_autoconf_enabled | BOOL |
| wlan_intf_opcode_background_scan_enabled | BOOL |
| wlan_intf_opcode_bss_type | DOT11_BSS_TYPE |
| wlan_intf_opcode_certified_safe_mode | BOOL |
| wlan_intf_opcode_channel_number | ULONG |
| wlan_intf_opcode_current_connection | WLAN_CONNECTION_ATTRIBUTES |
| wlan_intf_opcode_current_operation_mode | ULONG |
| wlan_intf_opcode_hosted_network_capable | BOOL |
| wlan_intf_opcode_interface_state | WLAN_INTERFACE_STATE |
| wlan_intf_opcode_management_frame_protection_capable | BOOL |
| wlan_intf_opcode_media_streaming_mode | BOOL |
| wlan_intf_opcode_qos_info | WLAN_QOS_INFO |
| wlan_intf_opcode_radio_state | WLAN_RADIO_STATE |
| wlan_intf_opcode_realtime_connection_quality | WLAN_REALTIME_CONNECTION_QUALITY |
| wlan_intf_opcode_rssi | PANJANG |
| wlan_intf_opcode_secondary_sta_interfaces | WLAN_INTERFACE_INFO_LIST |
| wlan_intf_opcode_secondary_sta_synchronized_connections | BOOL |
| wlan_intf_opcode_statistics | WLAN_STATISTICS |
| wlan_intf_opcode_supported_adhoc_auth_cipher_pairs | WLAN_AUTH_CIPHER_PAIR_LIST |
| wlan_intf_opcode_supported_country_or_region_string_list | WLAN_COUNTRY_OR_REGION_STRING_LIST |
| wlan_intf_opcode_supported_infrastructure_auth_cipher_pairs | WLAN_AUTH_CIPHER_PAIR_LIST |
| wlan_intf_opcode_supported_safe_mode | BOOL |
Windows XP dengan SP3 dan WIRELESS LAN API untuk Windows XP dengan SP2: Hanya konstanta wlan_intf_opcode_autoconf_enabled, wlan_intf_opcode_bss_type, wlan_intf_opcode_interface_state, dan wlan_intf_opcode_current_connection yang valid.
pReserved
Disiapkan untuk penggunaan masa mendatang. Harus diatur ke NULL.
[out] pdwDataSize
Ukuran parameter ppData , dalam byte.
[out] ppData
Arahkan ke lokasi memori yang berisi nilai yang dikueri dari parameter yang ditentukan oleh parameter OpCode .
Catatan Jika OpCode diatur ke wlan_intf_opcode_autoconf_enabled, wlan_intf_opcode_background_scan_enabled, atau wlan_intf_opcode_media_streaming_mode, maka penunjuk yang dirujuk oleh ppData dapat menunjuk ke nilai bilangan bulat. Jika pointer yang direferensikan oleh ppData menunjuk ke 0, maka nilai bilangan bulat harus dikonversi ke nilai boolean FALSE. Jika pointer yang direferensikan oleh ppData menunjuk ke bilangan bulat bukan nol, maka nilai bilangan bulat harus dikonversi ke nilai boolean TRUE.
[out, optional] pWlanOpcodeValueType
Jika melewati nilai non-NULL , menunjuk ke nilai WLAN_OPCODE_VALUE_TYPE yang menentukan jenis opcode yang dikembalikan. Parameter ini mungkin NULL.
Nilai kembali
Jika fungsi berhasil, nilai yang dikembalikan ERROR_SUCCESS.
Jika fungsi gagal, nilai yang dikembalikan mungkin salah satu kode pengembalian berikut.
Keterangan
Pemanggil bertanggung jawab untuk menggunakan WlanFreeMemory untuk membebaskan memori yang dialokasikan untuk ppData.
Ketika OpCode diatur ke wlan_intf_opcode_current_operation_mode, WlanQueryInterface meminta mode operasi antarmuka nirkabel saat ini. Untuk informasi selengkapnya tentang mode operasi, lihat Mode Operasi Native 802.11. Dua mode operasi didukung: DOT11_OPERATION_MODE_EXTENSIBLE_STATION dan DOT11_OPERATION_MODE_NETWORK_MONITOR. Konstanta mode operasi ditentukan dalam file header Windot11.h. ppData akan menunjuk ke salah satu dari dua nilai ini.
Contoh
Contoh berikut menghitung antarmuka LAN nirkabel di komputer lokal, meminta setiap antarmuka untuk WLAN_CONNECTION_ATTRIBUTES pada antarmuka, dan mencetak nilai dari struktur WLAN_CONNECTION_ATTRIBUTES yang diambil.
Untuk contoh lain menggunakan fungsi WlanQueryInterface , lihat struktur WLAN_RADIO_STATE .
Catatan Contoh ini akan gagal dimuat pada Windows Server 2008 dan Windows Server 2008 R2 jika Layanan LAN Nirkabel tidak diinstal dan dimulai.
#ifndef UNICODE
#define UNICODE
#endif
#include <windows.h>
#include <wlanapi.h>
#include <Windot11.h> // for DOT11_SSID struct
#include <objbase.h>
#include <wtypes.h>
//#include <wchar.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, k;
// variables used for WlanEnumInterfaces
PWLAN_INTERFACE_INFO_LIST pIfList = NULL;
PWLAN_INTERFACE_INFO pIfInfo = NULL;
// variables used for WlanQueryInterfaces for opcode = wlan_intf_opcode_current_connection
PWLAN_CONNECTION_ATTRIBUTES pConnectInfo = NULL;
DWORD connectInfoSize = sizeof(WLAN_CONNECTION_ATTRIBUTES);
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");
// If interface state is connected, call WlanQueryInterface
// to get current connection attributes
if (pIfInfo->isState == wlan_interface_state_connected) {
dwResult = WlanQueryInterface(hClient,
&pIfInfo->InterfaceGuid,
wlan_intf_opcode_current_connection,
NULL,
&connectInfoSize,
(PVOID *) &pConnectInfo,
&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_CONNECTION_ATTRIBUTES for this interface\n");
wprintf(L" Interface State:\t ");
switch (pConnectInfo->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" Connection Mode:\t ");
switch (pConnectInfo->wlanConnectionMode) {
case wlan_connection_mode_profile:
wprintf(L"A profile is used to make the connection\n");
break;
case wlan_connection_mode_temporary_profile:
wprintf(L"A temporary profile is used to make the connection\n");
break;
case wlan_connection_mode_discovery_secure:
wprintf(L"Secure discovery is used to make the connection\n");
break;
case wlan_connection_mode_discovery_unsecure:
wprintf(L"Unsecure discovery is used to make the connection\n");
break;
case wlan_connection_mode_auto:
wprintf
(L"connection initiated by wireless service automatically using a persistent profile\n");
break;
case wlan_connection_mode_invalid:
wprintf(L"Invalid connection mode\n");
break;
default:
wprintf(L"Unknown connection mode %ld\n",
pConnectInfo->wlanConnectionMode);
break;
}
wprintf(L" Profile name used:\t %ws\n", pConnectInfo->strProfileName);
wprintf(L" Association Attributes for this connection\n");
wprintf(L" SSID:\t\t ");
if (pConnectInfo->wlanAssociationAttributes.dot11Ssid.uSSIDLength == 0)
wprintf(L"\n");
else {
for (k = 0;
k < pConnectInfo->wlanAssociationAttributes.dot11Ssid.uSSIDLength;
k++) {
wprintf(L"%c",
(int) pConnectInfo->wlanAssociationAttributes.dot11Ssid.
ucSSID[k]);
}
wprintf(L"\n");
}
wprintf(L" BSS Network type:\t ");
switch (pConnectInfo->wlanAssociationAttributes.dot11BssType) {
case dot11_BSS_type_infrastructure:
wprintf(L"Infrastructure\n");
break;
case dot11_BSS_type_independent:
wprintf(L"Infrastructure\n");
break;
default:
wprintf(L"Other = %lu\n",
pConnectInfo->wlanAssociationAttributes.dot11BssType);
break;
}
wprintf(L" MAC address:\t ");
for (k = 0; k < sizeof (pConnectInfo->wlanAssociationAttributes.dot11Bssid);
k++) {
if (k == 5)
wprintf(L"%.2X\n",
pConnectInfo->wlanAssociationAttributes.dot11Bssid[k]);
else
wprintf(L"%.2X-",
pConnectInfo->wlanAssociationAttributes.dot11Bssid[k]);
}
wprintf(L" PHY network type:\t ");
switch (pConnectInfo->wlanAssociationAttributes.dot11PhyType) {
case dot11_phy_type_fhss:
wprintf(L"Frequency-hopping spread-spectrum (FHSS)\n");
break;
case dot11_phy_type_dsss:
wprintf(L"Direct sequence spread spectrum (DSSS)\n");
break;
case dot11_phy_type_irbaseband:
wprintf(L"Infrared (IR) baseband\n");
break;
case dot11_phy_type_ofdm:
wprintf(L"Orthogonal frequency division multiplexing (OFDM)\n");
break;
case dot11_phy_type_hrdsss:
wprintf(L"High-rate DSSS (HRDSSS) = \n");
break;
case dot11_phy_type_erp:
wprintf(L"Extended rate PHY type\n");
break;
case dot11_phy_type_ht:
wprintf(L"802.11n PHY type\n");
break;
default:
wprintf(L"Unknown = %lu\n",
pConnectInfo->wlanAssociationAttributes.dot11PhyType);
break;
}
wprintf(L" PHY index:\t\t %u\n",
pConnectInfo->wlanAssociationAttributes.uDot11PhyIndex);
wprintf(L" Signal Quality:\t %d\n",
pConnectInfo->wlanAssociationAttributes.wlanSignalQuality);
wprintf(L" Receiving Rate:\t %ld\n",
pConnectInfo->wlanAssociationAttributes.ulRxRate);
wprintf(L" Transmission Rate:\t %ld\n",
pConnectInfo->wlanAssociationAttributes.ulTxRate);
wprintf(L"\n");
wprintf(L" Security Attributes for this connection\n");
wprintf(L" Security enabled:\t ");
if (pConnectInfo->wlanSecurityAttributes.bSecurityEnabled == 0)
wprintf(L"No\n");
else
wprintf(L"Yes\n");
wprintf(L" 802.1X enabled:\t ");
if (pConnectInfo->wlanSecurityAttributes.bOneXEnabled == 0)
wprintf(L"No\n");
else
wprintf(L"Yes\n");
wprintf(L" Authentication Algorithm: ");
switch (pConnectInfo->wlanSecurityAttributes.dot11AuthAlgorithm) {
case DOT11_AUTH_ALGO_80211_OPEN:
wprintf(L"802.11 Open\n");
break;
case DOT11_AUTH_ALGO_80211_SHARED_KEY:
wprintf(L"802.11 Shared\n");
break;
case DOT11_AUTH_ALGO_WPA:
wprintf(L"WPA\n");
break;
case DOT11_AUTH_ALGO_WPA_PSK:
wprintf(L"WPA-PSK\n");
break;
case DOT11_AUTH_ALGO_WPA_NONE:
wprintf(L"WPA-None\n");
break;
case DOT11_AUTH_ALGO_RSNA:
wprintf(L"RSNA\n");
break;
case DOT11_AUTH_ALGO_RSNA_PSK:
wprintf(L"RSNA with PSK\n");
break;
default:
wprintf(L"Other (%lu)\n", pConnectInfo->wlanSecurityAttributes.dot11AuthAlgorithm);
break;
}
wprintf(L" Cipher Algorithm:\t ");
switch (pConnectInfo->wlanSecurityAttributes.dot11CipherAlgorithm) {
case DOT11_CIPHER_ALGO_NONE:
wprintf(L"None\n");
break;
case DOT11_CIPHER_ALGO_WEP40:
wprintf(L"WEP-40\n");
break;
case DOT11_CIPHER_ALGO_TKIP:
wprintf(L"TKIP\n");
break;
case DOT11_CIPHER_ALGO_CCMP:
wprintf(L"CCMP\n");
break;
case DOT11_CIPHER_ALGO_WEP104:
wprintf(L"WEP-104\n");
break;
case DOT11_CIPHER_ALGO_WEP:
wprintf(L"WEP\n");
break;
default:
wprintf(L"Other (0x%x)\n", pConnectInfo->wlanSecurityAttributes.dot11CipherAlgorithm);
break;
}
wprintf(L"\n");
}
}
}
}
if (pConnectInfo != NULL) {
WlanFreeMemory(pConnectInfo);
pConnectInfo = NULL;
}
if (pIfList != NULL) {
WlanFreeMemory(pIfList);
pIfList = NULL;
}
return dwRetVal;
}
Persyaratan
| Persyaratan | Nilai |
|---|---|
| Klien minimum yang didukung | Windows Vista, Windows XP dengan SP3 [hanya aplikasi desktop] |
| Server minimum yang didukung | Windows Server 2008 [hanya aplikasi desktop] |
| Target Platform | Windows |
| Header | wlanapi.h (termasuk Wlanapi.h) |
| Pustaka | Wlanapi.lib |
| DLL | Wlanapi.dll |
| Redistribusi | API LAN Nirkabel untuk Windows XP dengan SP2 |