[Solved] Accessing QML children with QObject::findChild

ggwolf

Visual Studio 2010, qt5.2.1

I have for includes:
#include <QtQuick/QQuickView>
#include <QtQuick/QQuickItem>

In QML, i have a bTrying to access a child of a QML root object in C++, I have the following setup code:

@ QQuickView *ui;
QObject *root;
QObject *grid;
QObject *repeater;

ui = new QQuickView;
ui->setSource(QUrl::fromLocalFile("ControlPanel.qml"));
Q_CHECK_PTR(ui);

root = ui->rootObject();
Q_CHECK_PTR(Root);

grid = Root->findChild("theGrid", Qt::FindDirectChildrenOnly);
Q_CHECK_PTR(Grid);
@
Visual studio has a mouseover error on the indirection operator on line 13 of the example: "Error: no instance of function template "QObject::findChild" matches the argument list." What am I doing wrong?

SGaist

Hi,

findChild is a template function so you have to give the type of the child you are searching.

In your case:

@ grid = Root->findChild<QObject *>("theGrid", Qt::FindDirectChildrenOnly);@

ggwolf

Thanks, this was indeed the problem!