QSA-interest Archive, September 2006
QSWrapperFactory with QSProject
Message 1 in thread
I'm using QSA 1.2.1
I modified the example/wrappers to use a QSProject and I get an Qscript
error on startup about using an undefined variable 'listView'.
The modified section looks like:
QSProject project;
QSInterpreter *it = project.interpreter();
// Create interpreter and add listview and factory to it. Order
here is
// important since adding a wrapper factory will reset the
interpreter.
it->addWrapperFactory(new Wrappers());
it->addTransientObject(listView);
it->evaluate(script, 0, fileName);
If I allocate a new QSInterpreter on the heap then everything works
again.
QSProject project;
QSInterpreter *it = project.interpreter();
it = new QSInterpeter;
// Create interpreter and add listview and factory to it. Order
here is
// important since adding a wrapper factory will reset the
interpreter.
it->addWrapperFactory(new Wrappers());
it->addTransientObject(listView);
it->evaluate(script, 0, fileName);
Is there a way to use the QSWrapperFactory with a QSProject?
Thanks,
Evan
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Message 2 in thread
FARRER, EVAN wrote:
> I'm using QSA 1.2.1
>
> I modified the example/wrappers to use a QSProject and I get an Qscript
> error on startup about using an undefined variable 'listView'.
>
> The modified section looks like:
> QSProject project;
> QSInterpreter *it = project.interpreter();
> // Create interpreter and add listview and factory to it. Order
> here is
> // important since adding a wrapper factory will reset the
> interpreter.
> it->addWrapperFactory(new Wrappers());
> it->addTransientObject(listView);
> it->evaluate(script, 0, fileName);
>
> If I allocate a new QSInterpreter on the heap then everything works
> again.
> QSProject project;
> QSInterpreter *it = project.interpreter();
> it = new QSInterpeter;
> // Create interpreter and add listview and factory to it. Order
> here is
> // important since adding a wrapper factory will reset the
> interpreter.
> it->addWrapperFactory(new Wrappers());
> it->addTransientObject(listView);
> it->evaluate(script, 0, fileName);
>
> Is there a way to use the QSWrapperFactory with a QSProject?
Hi Evan,
The problem here is that the project will contiously reevaluate its
state to make sure that its allways up-to-date. If you add objects using
QSInterpreter::addTransientObject() these will be cleared from the
interpreter whenever the project reevaluates. See the documentation:
http://doc.trolltech.com/qsa-1.2.1/qsinterpreter.html#addTransientObject
The correct function to use to add objects to the project is
QSProject::addObject();
-
Gunnar
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