FIX: MsgBox "Permission Denied" Error in WebBrowser ControlLast reviewed: March 5, 1998Article ID: Q182032 |
The information in this article applies to:
SYMPTOMSWhen navigating to a page in an application that hosts the Microsoft WebBrowser control, you will get the following scripting error message:
Permission DeniedThis error occurs specifically at a location in script code where the VBScript method MsgBox is called. It also occurs if the WebBrowser control is being hosted using Visual C++ and the Microsoft Foundation Classes' (MFC) default control containment support.
CAUSEThis error occurs because the IOleInPlaceFrame implementation of the control container is not returning S_OK from the EnableModeless method. MFC's control containment support returns E_NOTIMPL, which causes the scripting engine to not allow a message box to be displayed; hence, the "Permission Denied" error.
RESOLUTIONModify the control container to return S_OK from the IOleInPlaceFrame::EnableModeless method. EnableModeless should prepare the top-level frame for the display or removal of a modal dialog box based on the supplied Boolean parameter. Refer to the documentation for IOleInPlaceFrame::EnableModeless for more information on how to implement this method. This problem does not occur when hosting the Internet Explorer 4.0 WebBrowser control in an MFC application.
STATUSMicrosoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in Microsoft Internet Explorer 4.0.
MORE INFORMATIONMFC containers can use a call to CWinApp::EnableModeless to fully implement this function and return S_OK. Here is a code sample:
STDMETHODIMP CMyOleControlContainer::XMyOleIPFrame::EnableModeless(BOOL f) { METHOD_PROLOGUE_EX(CMyOleControlContainer, OleIPFrame) CWinApp* pApp = AfxGetApp(); if ( ! pApp ) return E_FAIL; pApp->EnableModeless( f ); return S_OK; } REFERENCESFor additional information on modifying MFC control containment support to override this method, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q141277 TITLE : How to Override an Interface in an MFC Application Keywords : AXSDKSripting kberrmsg Technology : kbInetDev Version : WINDOWS:1.0,1.1,2.0,3.0,3.01,3.02; WINNT:4.2b,5.0 Platform : WINDOWS winnt Issue type : kbbug Solution Type : kbfix |
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