We have an MFC application that uses a CHTMLView and also in a separate view references an activex control (Parallelgraphics Cortona Vrml Viewer v4.2).
A bizarre issue occurs on a system that has updated to IE9. Somehow when in the HTMLView upon right-clicking the view and hitting one of the context menu options it causes the C run-time math functions to then return incorrect values - which obviously leads to issues within our software and also apparently in the loaded 3d viewer. This is software that has worked correctly for years - it's quite bizarre.
Calls to functions such as tan() return incorrect values after right-clicking in the browser control. Any insight?
This is an application that has been built in MSVC++ 6.0.