Application crash when forcing IE8 rendering mode in webbrowser host#
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User stephench is reporting that when setting webbrowser rendering mode to IE8 via FEATURE_BROWSER_EMULATION, the app would crash. The web site crashes IE8 too, but IE8 is able to recover and automatically switch to IE7 mode, while a webbrowser host crash in WinInet when switching to the compatibility mode (Note the ReloadInCompatView function on the call stack). My guess is that reloading requires a WinInet helper process which a webbrowser host app does not have. The call stack is the following urlmon.dll!UUIDToWSTR() + 0x1f bytes urlmon.dll!GUIDToWSTR() + 0x1a bytes urlmon.dll!GUIDToWSTRCch() + 0x16 bytes urlmon.dll!CInPrivateBrowserModeFilter::_EnsureCLSID() + 0x20 bytes urlmon.dll!CSessionBrowserModeFilter::_GetDataStream() + 0x27 bytes urlmon.dll!CBrowserModeFilter::_EnsureBrowserModeFilter() + 0x1d84 bytes urlmon.dll!CBrowserModeFilter::IsIE7Mode() + 0x2e bytes mshtml.dll!CMarkup::ReloadInCompatView() + 0xd0 bytes mshtml.dll!CCssPageLayout::CalcSizeVirtual() + 0x120416 bytes mshtml.dll!CLayout::CalcSize() + 0x164 bytes mshtml.dll!CLayout::DoLayout() + 0x113 bytes mshtml.dll!CView::ExecuteLayoutTasks() - 0x1e376 bytes mshtml.dll!CView::EnsureView() + 0x567 bytes mshtml.dll!CView::EnsureViewCallback() + 0x66 bytes mshtml.dll!GlobalWndOnMethodCall() + 0xcc bytes mshtml.dll!GlobalWndProc() + 0xae bytes user32.dll!_InternalCallWinProc@20() + 0x28 bytes user32.dll!_UserCallWinProcCheckWow@32() + 0xb7 bytes user32.dll!_CallWindowProcAorW@24() + 0x51 bytes user32.dll!_CallWindowProcA@20() + 0x1b bytes mfc100.dll!_AfxActivationWndProc(HWND__ * hWnd=0x00150a28, unsigned int nMsg=32770, unsigned int wParam=0, long lParam=0) Line 471 + 0x11 bytes C++ user32.dll!_InternalCallWinProc@20() + 0x28 bytes user32.dll!_UserCallWinProcCheckWow@32() + 0xb7 bytes user32.dll!_DispatchMessageWorker@8() + 0xdc bytes user32.dll!_DispatchMessageA@4() + 0xf bytes > mfc100.dll!AfxInternalPumpMessage() Line 183 C++ mfc100.dll!CWinThread::Run() Line 629 + 0x7 bytes C++ mfc100.dll!AfxWinMain(HINSTANCE__ * hInstance=0x00400000, HINSTANCE__ * hPrevInstance=0x00000000, char * lpCmdLine=0x00152348, int nCmdShow=1) Line 47 + 0x7 bytes C++