CODEWITHSUNDEEP
c++qml
Valentin H
Valentin H

Reputation: 7448

What is the type of QML this in C++?

I want to pass the QML item reference to C++. It works using the id explicitly:

Item {
  id: qmlitem
  x: CppObj.getValue(qmlitem)
}

// c++
int getValue(QObject * qmlItem) {
  return 0;
}

if I pass this:

Item {
  x: CppObj.getValue(this)
}

QObject * qmlItem is 0x0.

If I replace

int getValue(QObject * qmlItem)

by 

int getValue(void * qmlItem)

qmlItem is not 0x0 - it has a value but of which type? Is it possible to obtain the QObject* from it?

Upvotes: 2

Views: 82

Answers (1)

sebasgo
sebasgo

Reputation: 3851

In QML, the value of this is currently undefined. Passing it to C++ will not yield any meaningful result. Whatever its content may be, it is not a reference to the current QML item. So just stick to your first solution and pass an ID.

Upvotes: 3

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