On Fri, 30 May 2008 23:41:57 +0100
Phil Thompson <[EMAIL PROTECTED]> wrote:
[ snip ]
> > But what can I do about this? It'd be nice to avoid some kind of
> > runtime RTTI list that the submodule appends to on startup, but if
> > that's what I have to do, that's alright ;) Just thought I'd check
> > here first for any ideas.
>
> Your class (or your code) has to provide some form of RTTI. QEvent
> provides type(), QObject provides inherits().
>
You can also rely on the RTTI provided by the compiler (seems to not
always work on Windows). PyQwt has code like:
%If (CXX_DYNAMIC_CAST)
%ConvertToSubClassCode
// Walk the inheritance tree depth first in alphabetical order
// This code is for Qwt4 and Qwt5
#ifdef sipClass_QwtArrayData
if (dynamic_cast<const QwtArrayData *>(sipCpp))
sipClass = sipClass_QwtArrayData;
else
#endif
#ifdef sipClass_QwtDoublePointData
if (dynamic_cast<const QwtDoublePointData *>(sipCpp))
sipClass = sipClass_QwtDoublePointData;
else
#endif
#ifdef sipClass_QwtPolygonFData
if (dynamic_cast<const QwtPolygonFData *>(sipCpp))
sipClass = sipClass_QwtPolygonFData;
else
#endif
#ifdef sipClass_QwtData
if (dynamic_cast<const QwtData *>(sipCpp))
sipClass = sipClass_QwtData;
else
#endif
sipClass = 0;
%End
%End
Gerard
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