How to pass the javascript var from qml to CPP?

Mathan M

I want to pass the results which stored in javascript var from the main.qml to the writeXML.cpp.
I can see the count, the searchitems are fetched and want to write in XML format.

How can I achieve this.

Code snippet:

var varResultArray;

varResultArray = idPortalSearchItems.results[1];

Query:

How Can I pass it by Javascript var Ex:
objHomeController.eveWriteXMLFile(varResultArray ); //Passing an Js variable

writeXML.h

What will be the datatype of the argument of the method?
Ex:
Q_INVOKABLE bool eveWriteXMLFile(??????? varResultArray ); //What will be the datatype?

How to access the object varResultArray in cpp file?

Thanks In advance.

p3c0

@Mathan-M Use QVariant as the argument type in C++ function.
Then convert that QVariant to your required type using one of the to* methods.

raven-worx

@Mathan-M said in How to pass the javascript var from qml to CPP?:

Q_INVOKABLE bool eveWriteXMLFile(??????? varResultArray ); //What will be the datatype?

An JS array from QML will be implicitly converted to a QVariantList.
Read this for more info about type conversion.

Mathan M

Hi,

I used the Qvariant, But still I cannot pass the value [JS array] from the qml.

Code Snippet:

in main.qml:

var varResultArray;
objHomeController.eveWriteXML(varResultowner);

in homectrl.h:
Q_INVOKABLE bool eveWriteXML(QVariant pqvarPortalItemResult);

in homectrl.cpp:

bool HomeController::eveWriteXML(QVariant pqvarPortalItemResult)
{

  QStringList strList = pqvarPortalItemResult.toStringList();
  int intCount= strList .count(); //Count = 0

}

Am I doing the right thing?

p3c0

@Mathan-M Convert it to list using toList