emit signal from script

**JohannesMunk** · 6th July 2010, 11:41

Signal/slot always requires objects.

You will need to add a QObject to your scripting environment, with

Qt Code:

Switch view

QScriptEngine* eng ..;
..
MyObject* myobject = new MyObject();
QObject::connect(myobject,SIGNAL(finished()),this,SLOT(calculationFinished()));
eng->globalObject().setProperty("myobject", eng->newQObject(myobject));
eng->evaluate( .. calculation script .. );

QScriptEngine* eng ..;
..
MyObject* myobject = new MyObject();
QObject::connect(myobject,SIGNAL(finished()),this,SLOT(calculationFinished()));
eng->globalObject().setProperty("myobject", eng->newQObject(myobject));
eng->evaluate( .. calculation script .. );

To copy to clipboard, switch view to plain text mode

That myobject could also hold the required parameters for your calculation..

I assume, you have put the scriptengine into another thread. Because if you call eng->evaluate directly, it won't return until the calculation is finished and you can emit your signal directly afterwards..

Joh