DOCUMENT:Q176419 06-NOV-1997 [vbwin] TITLE :BUG: Inet Control Method OpenURL Fails If No Proxy Selected PRODUCT :Microsoft Visual Basic for Windows PROD/VER:WINDOWS:4.0,5.0 OPER/SYS:WINDOWS KEYWORDS:vb5all vb5win kbcode ====================================================================== --------------------------------------------------------------------- The information in this article applies to: - Internet Client SDK, version 4.0 - Microsoft Internet Explorer (Programming), version 4.0 - Microsoft Visual Basic Professional Edition for Windows, version 5.0 --------------------------------------------------------------------- SYMPTOMS ======== If the Internet Explorer 4.0 option, "Access the Internet using a proxy server," check box is not selected when using the Internet Transfer control "OpenUrl" method within an HTML page, then the OpenURL method will fail. CAUSE ===== The problem is inherited from a bug in the Internet Explorer 4.0 WinInet API function InternetOpenUrl. The problem occurs only on computers that have Internet Explorer 4.0 installed, rather than Internet Explorer 3.x. RESOLUTION ========== Using the Inet control "Execute" method with the "GET" verb retrieves a file if the "Access the Internet using a proxy server" check box is not selected. The complete HTML code page is shown later in the MORE INFORMATION section. STATUS ====== Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this bug and will post new information here in the Microsoft Knowledge Base as it becomes available. MORE INFORMATION ================ Steps to Reproduce Behavior --------------------------- 1. Start Internet Explorer 4.0. 2. From the View menu, select Internet Options. 3. Click the Connection tab. 4. Clear the "Access the Internet using a proxy server" check box. 5. Put the code below in a HTML page. 6. Bring up the HTML page you just created in Internet Explorer 4.0. 7. Enter the URL you want to access. 8. Click the "Test Me with OpenUrl" command button. The OpenUrl method fails. 9. Click the "Test Me with Get" command button. The HTML page is retrieved as expected NOTE: Using the "Execute" method with the "GET" verb is the workaround to the OpenUrl bug.
Enter URL you want to access:
REFERENCES ========== For additional information, please see the following article in the Microsoft Knowledge Base: ARTICLE-ID: Q176420 TITLE : BUG: InternetSetOption Does Not Set Timeout Values ====================================================================== Keywords : vb5all vb5win kbcode Technology : kbInetDev Version : WINDOWS:4.0,5.0 Platform : WINDOWS Issue type : kbbug ============================================================================= 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 1997.