Hi Sean,
I found this example in the documentation:
QScriptValueList args;
args << QScriptValue(&engine, 3);
qDebug() << cube.call(QScriptValue(), args).toNumber(); // 27
So I think you basically do that << for each argument you want to
stick in. Here it looks like they're using QScriptValue() to create a
this object which is deliberately invalid. This is probably the
correct behaviour here because it's a static method (I think?) so
there is no real value for the this pointer.
Maybe it'll help if I explain a little. Hope this isn't patronizing :)
The this pointer is what you get when you make a call to a member
function of an object. When you do:
MyObject bob;
bob.myFunction();
When the compiler does it's magic, you go inside myFunction() and bob
becomes the value of the this pointer. Here, you're just defining
static functions:
void myNonMemberFunction(...) { }
So you aren't acting on any object and the this pointer is undefined.
Adam
2008/12/16 Sean M. Pappalardo <[email protected]>:
> Hi again.
>
> Adam Davison wrote:
>> You'll get a QScriptValue back which will be a function object (in the
>> QtScript sense). Then it has this call thing which takes an argument
>> list as a single QScriptValue. I've never done that bit but if I had
>> to guess I'd say you create a QtScript list object, which you can
>> presumably do either via the engine object or from some QScriptValue
>> constructor. Then you put your arguments as elements in the list and
>> pass it off to that call function.
>
> call looks like this:
> QScriptValue QScriptValue::call ( const QScriptValue & thisObject =
> QScriptValue(), const QScriptValueList & args = QScriptValueList() )
>
> Two questions:
> 1) What do I use for thisObject? (I'm trying to call the script function
> from midiobject.cpp for context.)
> 2) How do I make a QScriptValueList? It's not documented.
>
>> Does that make any sense? :)
>
> Yes, but I need code examples. Trial and error takes a looong time. All
> the ones I've found so far assume a UI.
>
> Sean
>
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