pinvoke.net: Edit: wininet.InternetSetOption

@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$
@pinvoke=http://pinvoke.net/$$$.htm

Summary: TODO - a short description

!!!!C# Signature:
 [DllImport("wininet.dll", SetLastError = true, CharSet=CharSet.Auto)]
 public static extern bool InternetSetOption(IntPtr hInternet, int
 dwOption, IntPtr lpBuffer, int dwBufferLength);
!!!!VB Signature:
 <DllImport("wininet.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
 Public Shared Function InternetSetOption(hInternet As IntPtr, dwOption As Integer, lpBuffer As IntPtr, dwBufferLength As Integer) As Boolean
 End Function
!!!!User-Defined Types:
None.

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

!!!!Notes:
For querying current settings use InternetQueryOption.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
 public struct Struct_INTERNET_PROXY_INFO 
 { 
     public int dwAccessType; 
     public IntPtr proxy; 
     public IntPtr proxyBypass; 
 };

[DllImport("wininet.dll", SetLastError = true)] 
     private static extern bool InternetSetOption(IntPtr hInternet, 
     int dwOption, 
     IntPtr lpBuffer, 
     int lpdwBufferLength);

private void RefreshIESettings(string strProxy) 
 { 
     const int INTERNET_OPTION_PROXY = 38; 
     const int INTERNET_OPEN_TYPE_PROXY = 3;

Struct_INTERNET_PROXY_INFO struct_IPI; 
 
     // Filling in structure 
     struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY; 
     struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy); 
     struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");

// Allocating memory 
     IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI)); 
 
     // Converting structure to IntPtr 
     Marshal.StructureToPtr(struct_IPI, intptrStruct, true);

bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI)); 
 }

private void SomeFunc() 
 { 
     RefreshIESettings("1.2.3.4:8080"); 
     //or RefreshIESettings("http://1.2.3.4:8080"); //both worked 
     //or RefreshIESettings("http=1.2.3.4:8080"); //both worked

System.Object nullObject = 0; 
     string strTemp = ""; 
     System.Object nullObjStr = strTemp; 
     axWebBrowser1.Navigate("http://willstay.tripod.com", ref nullObject, ref nullObjStr, ref nullObjStr, ref nullObjStr); 
 }

Documentation: InternetSetOption@msdn on MSDN