how to call user defined function of user defined call from QtScriptEngine evaluate

[sheetalw]

Hi,

I am having a c++ class CRectangleItems. this class have lots of different functions. I want to call these function by using QtScript. Means i will create object of CRectangle and will define as newQObject with QtScriptEngine. I will provide separate script editor, from editor user will call and of function from CRectangleItems . and all that script will be given to QtScriptEngine.evaluate function. Please guide me to achieve this.

[wysota]

It's enough if your CRectangleItems class declares all methods you want to call on it as slots. Then you can call them from within QtScript (provided the instance of the class is exported to the scripting environment).

[sheetalw]

yes i tried to do it in same way, but its not working. have a look towards the code

QScriptEngine scriptEngine;
CRectangleItem *rectangle = new CRectangleItem();
QScriptValue scriptobj = scriptEngine.newQObject(rectangle,QScriptEngine::S criptOwnership);
scriptEngine.globalObject().setProperty("rectangle ",scriptobj);
QScriptValue result = scriptEngine.evaluate(scriptstring);



In CRectangleItem class i have declared a slot drawr()

then can i call it from script editor like

rectangle.drawr(); ----- I will give this string to evaluate function.... is it correct way of calling, please let me know

[wysota]

yes i tried to do it in same way, but its not working. have a look towards the code

QScriptEngine scriptEngine;
CRectangleItem *rectangle = new CRectangleItem();
QScriptValue scriptobj = scriptEngine.newQObject(rectangle,QScriptEngine::S criptOwnership);
scriptEngine.globalObject().setProperty("rectangle ",scriptobj);
QScriptValue result = scriptEngine.evaluate(scriptstring);



In CRectangleItem class i have declared a slot drawr()

then can i call it from script editor like

rectangle.drawr();

And what happens when you do that?

[sheetalw]

string variable result shows a message " rectangle.drawr[undefined] is not a function"

[wysota]

This works fine for me:

#include <QApplication>
#include <QScriptEngine>
#include <QtDebug>
 
class RItem : public QObject {
  Q_OBJECT
public:
  RItem() : QObject() {}
public slots:
  void drawr() { qDebug() << Q_FUNC_INFO; }
};
 
#include "main.moc"
 
int main(int argc, char **argv) {
  QApplication app(argc, argv);
  QScriptEngine engine;
  RItem item;
  QScriptValue val = engine.newQObject(&item);
  engine.globalObject().setProperty("rectangle", val);
  engine.evaluate("rectangle.drawr()") ;
  return 0;
}

#include <QApplication>
#include <QScriptEngine>
#include <QtDebug>

class RItem : public QObject {
  Q_OBJECT
public:
  RItem() : QObject() {}
public slots:
  void drawr() { qDebug() << Q_FUNC_INFO; }
};

#include "main.moc"

int main(int argc, char **argv) {
  QApplication app(argc, argv);
  QScriptEngine engine;
  RItem item;
  QScriptValue val = engine.newQObject(&item);
  engine.globalObject().setProperty("rectangle", val);
  engine.evaluate("rectangle.drawr()") ;
  return 0;
}

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[sheetalw]

Thanks a lot. I declared slot as private that's why it was not working for me.