WlanQueryInterface 函式 (wlanapi.h)
注意
針對發行前產品的部分相關資訊，在產品正式發行時可能會有大幅修改。 針對此處提供的資訊，Microsoft 不做任何明示或默許的擔保。
重要
此 API 將受到即將變更的操作系統行為所影響，其計劃為 2024 年 2024 年。 如需詳細資訊，請參閱 Wi-Fi 存取和位置的 API 行為變更。
WlanQueryInterface 函式會查詢指定介面的各種參數。
語法
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
);
參數
[in] hClientHandle
用戶端的會話句柄，由先前呼叫 WlanOpenHandle 函式取得。
[in] pInterfaceGuid
要查詢之介面的 GUID。
[in] OpCode
WLAN_INTF_OPCODE值，指定要查詢的參數。 下表列出有效的常數以及 ppData中參數的數據類型。
| WLAN_INTF_OPCODE | ppData 數據類型 |
|---|---|
| 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 | LONG |
| 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 with SP3 和 Wireless LAN API for Windows XP with SP2： 只有 wlan_intf_opcode_autoconf_enabled、 wlan_intf_opcode_bss_type、 wlan_intf_opcode_interface_state和 wlan_intf_opcode_current_connection 常數有效。
pReserved
保留供未來使用。 必須設定為 NULL。
[out] pdwDataSize
ppData 參數的大小，以位元組為單位。
[out] ppData
記憶體位置的指標，其中包含 OpCode 參數所指定之參數的查詢值。
注意 如果 OpCode 設定為 wlan_intf_opcode_autoconf_enabled、 wlan_intf_opcode_background_scan_enabled或 wlan_intf_opcode_media_streaming_mode， 則 ppData 所參考的指標可能會指向整數值。 如果 ppData 所參考的指標指向 0，則整數值應該轉換成布爾值 FALSE。 如果 ppData 所參考的指標指向非零整數，則整數值應該轉換成布爾值 TRUE。
[out, optional] pWlanOpcodeValueType
如果傳遞非 NULL 值，則指向指定所傳回 opcode 類型的 WLAN_OPCODE_VALUE_TYPE 值。 此參數可以是 NULL。
傳回值
如果函式成功，傳回值會ERROR_SUCCESS。
如果函式失敗，傳回值可能是下列其中一個傳回碼。
備註
呼叫端負責使用 WlanFreeMemory 釋放配置給 ppData 的記憶體。
當 OpCode 設定為 wlan_intf_opcode_current_operation_mode 時， WlanQueryInterface 會查詢無線介面目前的作業模式。 如需作業模式的詳細資訊，請參閱 原生 802.11 作業模式。 支援兩種作業模式： DOT11_OPERATION_MODE_EXTENSIBLE_STATION 和 DOT11_OPERATION_MODE_NETWORK_MONITOR。 作業模式常數定義於頭檔Windot11.h 中。 ppData 會指向這兩個值的其中一個。
範例
下列範例會列舉本機計算機上的無線 LAN 介面、查詢介面上 WLAN_CONNECTION_ATTRIBUTES 的每個介面，以及從 擷取的 WLAN_CONNECTION_ATTRIBUTES 結構列印值。
如需使用 WlanQueryInterface 函式的另一個範例，請參閱 WLAN_RADIO_STATE 結構。
注意 如果未安裝並啟動無線 LAN 服務，此範例將無法載入 Windows Server 2008 和 Windows Server 2008 R2。
#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;
}
規格需求
| 需求 | 值 |
|---|---|
| 最低支援的用戶端 | Windows Vista、Windows XP SP3 [僅限傳統型應用程式] |
| 最低支援的伺服器 | Windows Server 2008 [僅限傳統型應用程式] |
| 目標平台 | Windows |
| 標頭 | wlanapi.h (包含 Wlanapi.h) |
| 程式庫 | Wlanapi.lib |
| Dll | Wlanapi.dll |
| 可轉散發套件 | 適用於 Windows XP 與 SP2 的無線 LAN API |