public static extern uint WlanQueryInterface([In] IntPtr hClientHandle,
[In] ref Guid pInterfaceGuid,
WLAN_INTF_OPCODE OpCode,
IntPtr pReserved,
[Out] out uint pdwDataSize,
ref IntPtr ppData,
IntPtr pWlanOpcodeValueType);
private static extern uint WlanQueryInterface( IntPtr hClientHandle, [MarshalAs(UnmanagedType.LPStruct)] Guid pInterfaceGuid, WLAN_INTF_OPCODE OpCode, IntPtr pReserved, out uint pdwDataSize, ref IntPtr ppData, IntPtr pWlanOpcodeValueType);
public static extern uint WlanSetInterface(IntPtr hClientHandle, ref Guid pInterfaceGuid, WLAN_INTF_OPCODE OpCode, uint dwDataSize, ref object obj, IntPtr pReserved);
public static extern uint WlanSetInterface(IntPtr hClientHandle, ref Guid pInterfaceGuid, WLAN_INTF_OPCODE OpCode, uint dwDataSize, ref object obj, IntPtr pReserved);
public static extern uint WlanQueryInterface([In] IntPtr hClientHandle, [In] ref Guid pInterfaceGuid, WLAN_INTF_OPCODE OpCode, IntPtr pReserved, [Out] out uint pdwDataSize, ref IntPtr ppData, IntPtr pWlanOpcodeValueType);
/// <summary>
/// Gets a parameter of the interface whose data type is <see cref="int"/>.
///
/// Possible Win32 errors:
/// ERROR_ACCESS_DENIED: The caller does not have sufficient permissions to perform the requested operation.
/// ERROR_INVALID PARAMETER: hClientHandle is NULL or invalid, pInterfaceGuid is NULL, pReserved is not NULL, ppData is NULL, or pdwDataSize is NULL.
/// ERROR_INVALID_HANDLE: The handle hClientHandle was not found in the handle table.
/// ERROR_INVALID_STATE: OpCode is set to wlan_intf_opcode_current_connection and the client is not currently connected to a network.
/// ERROR_NOT_ENOUGH_MEMORY: Failed to allocate memory for the query results.
/// RPC_STATUS: Various error codes.
/// </summary>
/// <param name="clientHandle">The client's session handle, obtained by a previous call to the WlanOpenHandle function.</param>
/// <param name="interfaceId">The GUID of the interface to be queried.</param>
/// <param name="wlanIntfOpcode">A WLAN_INTF_OPCODE value that specifies the parameter to be queried.</param>
/// <returns>The integer value.</returns>
public static int GetInterfaceInt(SafeClientHandle clientHandle, Guid interfaceId, WLAN_INTF_OPCODE wlanIntfOpcode)
{
var queryData = IntPtr.Zero;
try
{
var result = WlanQueryInterface(
clientHandle,
interfaceId,
wlanIntfOpcode,
IntPtr.Zero,
out uint dataSize,
out queryData,
out WLAN_OPCODE_VALUE_TYPE opcodeValueType);
// ERROR_INVALID_STATE will be returned if the client is not connected to a network.
return(CheckResult(nameof(GetInterfaceInt), result, false)
? Marshal.ReadInt32(queryData)
: -1);
}
finally
{
if (queryData != IntPtr.Zero)
{
WlanFreeMemory(queryData);
}
}
}
private static bool SetInterfaceInt(SafeClientHandle clientHandle, Guid interfaceId, WLAN_INTF_OPCODE wlanIntfOpcode, int value)
{
var setData = IntPtr.Zero;
try
{
setData = Marshal.AllocHGlobal(sizeof(int));
Marshal.WriteInt32(setData, value);
var result = WlanSetInterface(
clientHandle,
interfaceId,
wlanIntfOpcode,
sizeof(int),
setData,
IntPtr.Zero);
return(CheckResult(nameof(WlanSetInterface), result, false));
}
finally
{
Marshal.FreeHGlobal(setData);
}
}
private static int?GetInterfaceInt(SafeClientHandle clientHandle, Guid interfaceId, WLAN_INTF_OPCODE wlanIntfOpcode)
{
var queryData = IntPtr.Zero;
try
{
var result = WlanQueryInterface(
clientHandle,
interfaceId,
wlanIntfOpcode,
IntPtr.Zero,
out _,
out queryData,
IntPtr.Zero);
return(CheckResult(nameof(WlanQueryInterface), result, false)
? Marshal.ReadInt32(queryData)
: (int?)null);
}
finally
{
if (queryData != IntPtr.Zero)
{
WlanFreeMemory(queryData);
}
}
}
