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POWhen virtual doesn't work
 

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    <p>I have a weird error in my C++ classes at the moment. I have an ActiveX wrapper class (as part of wxWidgets) that i added a new virtual function to. I have another class that inherits from the ActiveX one (wxIEHtmlWin) however the ActiveX class always calls its own function instead of the one in wxIEHtmlWin which overrides it.</p> <p>I can't work out why this is happening. I made the function pure virtual and now the program crashes when it does the function call but compiles fine otherwise. Is there any way to disable virtual functions or have I found a bug in Visual Studio?</p> <p>ActiveX class</p> <pre><code>protected: virtual FrameSite* getNewFrameSite()=0; </code></pre> <p>wxIEHtmlWin class</p> <pre><code>class wxIEHtmlWin : public wxActiveX { protected: FrameSite* getNewFrameSite(); } FrameSite* wxIEHtmlWin::getNewFrameSite() { return new gcFrameSite(this); } </code></pre> <p>Edit: I've added another test function (returns an int) and still screws up.</p> <p>Link to code in question: <a href="http://lodle.net/public/iebrowser.rar" rel="nofollow noreferrer">http://lodle.net/public/iebrowser.rar</a></p> <p>Edit:</p> <p>OK thanks to the answer below i got it to work. What i did was create the activex class in two parts (like suggested) however in wxIEHtmlWin i called the second part in the constructor code. Like so:</p> <pre><code>wxIEHtmlWin::wxIEHtmlWin(wxWindow * parent, wxWindowID id, const wxPoint&amp; pos,const wxSize&amp; size,long style, const wxString&amp; name) : wxActiveX() { wxActiveX::Create(parent, PROGID, id, pos, size, style, name); SetupBrowser(); } </code></pre> <p>Now i know why wxWidgets supports two part construction.</p>
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    1. USMihai Limbășan
    1. USLodle
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    1. COCan we see the whole wxActiveX class (or at least a cut down, but yet complete in a C++ sense version that exhibits the problem)? could there be a macro interfering? Look at the preprocessed file(s) if possible.
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      1. USMichael Burr
    2. COAnd make sure you've done a clean.
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      1. USArtelius
    3. COYeah i normally do after glitches like this. Didnt fix the issue.
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      1. USLodle
 

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