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Problem with call a WinAPI Function Dhcpcsvc.dll DhcpRequest

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live2

Joined: 23 Feb 2008
Posts: 1

Posted: Sat Feb 23, 2008 4:00 pm Post subject: Problem with call a WinAPI Function Dhcpcsvc.dll DhcpRequest

Problem with call a WinAPI Function Dhcpcsvc.dll DhcpRequestParams

Error Message Sorry i have it only in German

Quote:

Ein Aufruf an die PInvoke-Funktion "WindowsApplication1!WindowsApplication1.Form1::DhcpRequestParams" hat das Gleichgewicht des Stapels gestört. Wahrscheinlich stimmt die verwaltete PInvoke-Signatur nicht mit der nicht verwalteten Zielsignatur überein. Überprüfen Sie, ob die Aufrufkonvention und die Parameter der PInvoke-Signatur mit der nicht verwalteten Zielsignatur übereinstimmen.

Code:

const byte DHCPCAPI_REQUEST_PERSISTENT = 0x01;
const byte DHCPCAPI_REQUEST_SYNCHRONOUS = 0x02;
const byte DHCPCAPI_REQUEST_ASYNCHRONOUS = 0x04;
const byte DHCPCAPI_REQUEST_CANCEL = 0x08;
const byte DHCPCAPI_REQUEST_MASK = 0x0F;

public struct DHCPCAPI_CLASSID
{
public int Flags;
public byte Data;
public int nBytesData;
}

public struct DHCPCAPI_PARAMS
{
public int Flags;
public int OptionId;
public bool IsVendor;
public byte Data;
public int nBytesData;
}

public struct DHCPCAPI_PARAMS_ARRAY
{
public int nParams;
public DHCPCAPI_PARAMS Params;
}

[DllImport("Dhcpcsvc.dll")]
public static extern int DhcpRequestParams(uint Flags, IntPtr Reserved, [MarshalAs(UnmanagedType.LPWStr)] string AdapterName, DHCPCAPI_CLASSID ClassId, DHCPCAPI_PARAMS_ARRAY SendParams, ref DHCPCAPI_PARAMS_ARRAY RecdParams, string Buffer, ref uint pSize, [MarshalAs(UnmanagedType.LPWStr)] string RequestIdStr);

private void button1_Click(object sender, EventArgs e)
{

DHCPCAPI_PARAMS DhcpApiHostNameParams = new DHCPCAPI_PARAMS();
DhcpApiHostNameParams.Flags = 0;
DhcpApiHostNameParams.OptionId = 66;
DhcpApiHostNameParams.IsVendor = false;
DhcpApiHostNameParams.Data = new byte();
DhcpApiHostNameParams.nBytesData = 0;

DHCPCAPI_PARAMS_ARRAY SendParams = new DHCPCAPI_PARAMS_ARRAY();
SendParams.nParams = 0;
SendParams.Params = new DHCPCAPI_PARAMS();

DHCPCAPI_PARAMS_ARRAY RecdParams = new DHCPCAPI_PARAMS_ARRAY();
RecdParams.nParams = 1;
RecdParams.Params = DhcpApiHostNameParams;

IntPtr Reserved = new IntPtr();
DHCPCAPI_CLASSID ClassId = new DHCPCAPI_CLASSID();
uint pSize = 1;

DhcpRequestParams(1, Reserved, "VMWare Accelerated AMD PCNet Adapter", ClassId, SendParams, ref RecdParams, "", ref pSize, "1");

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