How To Set and Get Cookies for a URL Using WinInet APIs

MORE INFORMATION

1. Create a new standard .exe project in Visual Basic. Form1 is created by default.
2. Add the following controls to Form1:

         Control           Name           Caption
         --------------------------------------------------
         Command Button    Command1       InternetSetCookie
         Command Button    Command2       InternetGetCookie
   
   					

3. In Form1, add the following code in the code window:

         Option Explicit
   
         ' No more data is available.
         Const ERROR_NO_MORE_ITEMS = 259
   
         ' The data area passed to a system call is too small.
         Const ERROR_INSUFFICIENT_BUFFER = 122
   
         Private Declare Function InternetSetCookie Lib "wininet.dll" _
          Alias "InternetSetCookieA" _
          (ByVal lpszUrlName As String, _
          ByVal lpszCookieName As String, _
          ByVal lpszCookieData As String) As Boolean
   
         Private Declare Function InternetGetCookie Lib "wininet.dll" _
          Alias "InternetGetCookieA" _
          (ByVal lpszUrlName As String, _
          ByVal lpszCookieName As String, _
          ByVal lpszCookieData As String, _
          lpdwSize As Long) As Boolean
   
         Private Sub Command1_Click()
          Dim bRet As Boolean
          bRet = InternetSetCookie("http://xxxx/xxxx.htm", _
           "Test", "Sent as Test via VB")
          If bRet = False Then
              MsgBox "Failed"
          End If
         End Sub
   
         Private Sub Command2_Click()
           Dim sCookieVal As String * 256
           Dim bRet As Boolean
           bRet = InternetGetCookie("http://xxxx/xxxx.htm", _
            "Test", sCookieVal, 255)
           If bRet = False Then
             MsgBox "Failed"
           Else
             MsgBox sCookieVal
           End If
         End Sub