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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
void wrapInFunction()
{
//! [0]
class MyClass : public QObject
{
Q_OBJECT
Q_CLASSINFO("author", "Sabrina Schweinsteiger")
Q_CLASSINFO("url", "http://doc.moosesoft.co.uk/1.0/")
public:
...
};
//! [0]
//! [1]
QByteArray normType = QMetaObject::normalizedType(" int const *");
// normType is now "const int*"
//! [1]
//! [2]
QMetaObject::invokeMethod(thread, "quit",
Qt::QueuedConnection);
//! [2]
//! [3]
QMetaObject::invokeMethod: Unable to handle unregistered datatype 'MyType'
//! [3]
//! [invokemethod-no-macro]
QString retVal;
QMetaObject::invokeMethod(obj, "compute", Qt::DirectConnection,
qReturnArg(retVal),
QString("sqrt"), 42, 9.7);
//! [invokemethod-no-macro]
//! [invokemethod-no-macro-other-types]
QString retVal;
QMetaObject::invokeMethod(obj, "compute", Qt::DirectConnection,
qReturnArg(retVal),
QStringView("sqrt"), qsizetype(42), 9.7f);
//! [invokemethod-no-macro-other-types]
//! [4]
QString retVal;
QMetaObject::invokeMethod(obj, "compute", Qt::DirectConnection,
Q_RETURN_ARG(QString, retVal),
Q_ARG(QString, "sqrt"),
Q_ARG(int, 42),
Q_ARG(double, 9.7));
//! [4]
//! [5]
class MyClass
{
Q_OBJECT
Q_CLASSINFO("author", "Sabrina Schweinsteiger")
Q_CLASSINFO("url", "http://doc.moosesoft.co.uk/1.0/")
public:
...
};
//! [5]
//! [propertyCount]
const QMetaObject* metaObject = obj->metaObject();
QStringList properties;
for(int i = metaObject->propertyOffset(); i < metaObject->propertyCount(); ++i)
properties << QString::fromLatin1(metaObject->property(i).name());
//! [propertyCount]
//! [methodCount]
const QMetaObject* metaObject = obj->metaObject();
QStringList methods;
for(int i = metaObject->methodOffset(); i < metaObject->methodCount(); ++i)
methods << QString::fromLatin1(metaObject->method(i).methodSignature());
//! [methodCount]
//! [6]
int methodIndex = pushButton->metaObject()->indexOfMethod("animateClick()");
QMetaMethod method = metaObject->method(methodIndex);
method.invoke(pushButton, Qt::QueuedConnection);
//! [6]
//! [7]
QMetaMethod::invoke: Unable to handle unregistered datatype 'MyType'
//! [7]
//! [invoke-no-macro]
QString retVal;
QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QString, int, double)");
int methodIndex = obj->metaObject()->indexOfMethod(normalizedSignature);
QMetaMethod method = obj->metaObject()->method(methodIndex);
method.invoke(obj, Qt::DirectConnection, qReturnArg(retVal),
QString("sqrt"), 42, 9.7);
//! [invoke-no-macro]
//! [invoke-no-macro-other-types]
QString retVal;
QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QByteArray, qint64, long double)");
int methodIndex = obj->metaObject()->indexOfMethod(normalizedSignature);
QMetaMethod method = obj->metaObject()->method(methodIndex);
method.invoke(obj, Qt::DirectConnection, qReturnArg(retVal),
QByteArray("sqrt"), qint64(42), 9.7L);
//! [invoke-no-macro-other-types]
//! [8]
QString retVal;
QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QString, int, double)");
int methodIndex = obj->metaObject()->indexOfMethod(normalizedSignature);
QMetaMethod method = obj->metaObject()->method(methodIndex);
method.invoke(obj,
Qt::DirectConnection,
Q_RETURN_ARG(QString, retVal),
Q_ARG(QString, "sqrt"),
Q_ARG(int, 42),
Q_ARG(double, 9.7));
//! [8]
//! [9]
QMetaMethod destroyedSignal = QMetaMethod::fromSignal(&QObject::destroyed);
//! [9]
//! [10]
// In the class MainWindow declaration
#ifndef Q_MOC_RUN
// define the tag text as empty, so the compiler doesn't see it
# define MY_CUSTOM_TAG
#endif
...
private slots:
MY_CUSTOM_TAG void testFunc();
//! [10]
//! [11]
MainWindow win;
win.show();
int functionIndex = win.metaObject()->indexOfSlot("testFunc()");
QMetaMethod mm = win.metaObject()->method(functionIndex);
qDebug() << mm.tag(); // prints MY_CUSTOM_TAG
//! [11]
}
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