DOCUMENT:Q196062 17-MAY-2002 [vbwin] TITLE :HOWTO: Set and Get Cookies for a URL Using WinInet APIs PRODUCT :Microsoft Visual Basic for Windows PROD/VER:WINDOWS:5.0,6.0 OPER/SYS: KEYWORDS:kbAPI kbInternet kbVBp500 kbVBp600 kbGrpDSVB kbInetDev ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0 - Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 - Microsoft Windows Internet Services (WinInet) ------------------------------------------------------------------------------- SUMMARY ======= From a Visual Basic application, you can set and get cookies on a client that corresponds to a given URL by using the InternetSetCookie and InternetGetCookie APIs from the WinInet.dll. 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 REFERENCES ========== For more information on the WinInet APIs (and specifically the InternetSetCookie and InternetGetCookie functions), please see the WinInet documentation in the MSDN library and the following Web sites: WinInet.dll: http://msdn.microsoft.com/workshop/networking/wininet/wininet.asp Cookie APIs: http://msdn.microsoft.com/workshop/networking/wininet/overview/cookie.asp Additional query words: ====================================================================== Keywords : kbAPI kbInternet kbVBp500 kbVBp600 kbGrpDSVB kbInetDev Technology : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVB500 kbVB600 Version : WINDOWS:5.0,6.0 Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.