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InternetOpen (wininet)
TODO - a short description

C# Signature:

const int INTERNET_OPEN_TYPE_PRECONFIG = 0; // use registry configuration

const int INTERNET_OPEN_TYPE_DIRECT = 1; // direct to net

const int INTERNET_OPEN_TYPE_PROXY = 3; // via named proxy

const int INTERNET_OPEN_TYPE_PRECONFIG_WITH_NO_AUTOPROXY = 4; // prevent using java/script/INS

[DllImport("wininet.dll", SetLastError=true, CharSet=CharSet.Auto)]
static extern IntPtr InternetOpen(
   string lpszAgent, int dwAccessType, string lpszProxyName,
   string lpszProxyBypass, int dwFlags);

VB Signature:

Const INTERNET_OPEN_TYPE_PRECONFIG = 0 ' // use registry configuration

Const INTERNET_OPEN_TYPE_DIRECT = 1 ' // direct to net

Const INTERNET_OPEN_TYPE_PROXY = 3 ' // via named proxy

Const INTERNET_OPEN_TYPE_PRECONFIG_WITH_NO_AUTOPROXY = 4 ' // prevent using java/script/INS

Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" ( _
    ByVal sAgent As String, _
    ByVal lAccessType As Int32, _
    ByVal sProxyName As String, _
    ByVal sProxyBypass As String, _
    ByVal lFlags As Integer) As Int32


  sAgent can be any string, it is just to identify the connection
  Using INTERNET_OPEN_TYPE_PRECONFIG as lAccessType, InternetOpen
  uses the proxy specifications of Internet Explorer, useful if you
  are behind a proxy firewall which uses dynamic proxy script


Tips & Tricks:

Please add some!

Sample Code:

C# Sample:

    IntPtr hInternet = InternetOpen("browser", INTERNET_OPEN_TYPE_DIRECT, null, null, 0);
    if (IntPtr.Zero == hInternet)
    Console.WriteLine("InternetOpen returned null.");
    Console.WriteLine("InternetOpen succeeded.");

VB Sample:

    Dim hInet As Int32 = InternetOpen(HttpAgent, INTERNET_OPEN_TYPE_PRECONFIG, _
      vbNullString, vbNullString, 0)
    If hInet = 0 Then Return False

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