2011/1/6 机械唯物主义 : linjunhalida <[email protected]>:
> hello, I'm still creating wrapper for qwt..
> here is the issue:
> we have 2 class: QwtScaleDiv, QwtScaleEngine.
>
> in QwtScaleEngine, there is a pure virtual method:
> http://qwt.sourceforge.net/qwt__scale__engine_8h-source.html
>
> virtual QwtScaleDiv divideScale (double x1, double x2, int
> maxMajSteps, int maxMinSteps, double stepSize=0.0) const =0
>
> and it returns QwtScaleDiv:
> http://qwt.sourceforge.net/qwt__scale__div_8h-source.html
>
> 00045 explicit QwtScaleDiv();
>
> and in qwtsacleengine_wrapper.cpp:
>
>
> QwtScaleDiv QwtScaleEngineWrapper::divideScale(double x1, double x2,
> int maxMajSteps, int maxMinSteps, double stepSize) const
> ...
> if (py_override.isNull()) {
>
> PyErr_SetString(PyExc_NotImplementedError, "pure virtual
> method 'QwtScaleEngine.divideScale()' not implemented.");
> return 0;
> }
>
> ok, then compile error:
>
> /data/workspace/pyside/pysideqwt/build/qwt/PySideQwt/qwtscaleengine_wrapper.cpp:
> In member function 'virtual QwtScaleDiv
> QwtScaleEngineWrapper::divideScale(double, double, int, int, double)
> const':
> /data/workspace/pyside/pysideqwt/build/qwt/PySideQwt/qwtscaleengine_wrapper.cpp:61:
> error: conversion from 'int' to non-scalar type 'QwtScaleDiv'
> requested
>
> hand edit return 0; -> return QwtScaleDiv(); OK,
> how could I fix it in xml?
> _______________________________________________
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> http://lists.openbossa.org/listinfo/pyside
>
Hi,
if you're still there, put this inside the type system entry for QwtScaleEngine:
<modify-function signature="divideScale(double, double, int,
int, double)">
<modify-argument index="return">
<replace-default-expression with="QwtScaleDiv()"/>
</modify-argument>
</modify-function>
Marcelo Lira
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