[Qt-interest] QtScript, passing a var as a QString to a slot

[Jaco Naude]

Hi there

I hope that someone can point me in the right direction here. I'm new to
scripting with QtScript and I'm having some problems. I have the following
two slots:

*Q_INVOKABLE bool MatrixAdd(const QString& variable_to_add, const QString&
new_name);*
*Q_INVOKABLE bool MatrixSubtract(const QString& variable_to_subtract, const
QString& new_name, QString& result_string);*

I execute the following script and it works fine:
*var worked = a.MatrixAdd("b","d");*

But I want to return information about what went wrong if the function
returned false. Thus I execute the following:

*var result_string; *

*var worked = a.MatrixSubtract("b","c", result_string);*


and I get the following:

*Script Error: TypeError: cannot call MatrixSubtract(): argument 3 has
unknown type `QString&' (register the type with qScriptRegisterMetaType()) *

*1, TypeError: cannot call MatrixSubtract(): argument 3 has unknown type
`QString&' (register the type with qScriptRegisterMetaType())*


Should I rather make the result_string type a QScriptValue and convert this
to a string in my function? Or is there a way that I can leave the slot as
is and do something different in the code.


Thanks in advance,

Jaco
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