Demo the QT dynamic invokes

dynamicinvoke.cpp

#include "dynamicinvoke.h"
#include <QDebug>

TestObject::TestObject( const char* _str )
{
    this->str = _str;
}

DynamicInvoke::DynamicInvoke( QObject* parent )
    :QObject( parent ){
}

DynamicInvoke::~DynamicInvoke() {

}

void DynamicInvoke::doInvoke() {
	//before dynamic calling, call qRegisterMetaType method 
    qRegisterMetaType<TestObject*>();
    TestObject* pObj = new TestObject( "hello");
    QMetaObject::invokeMethod( this, "printString", Q_ARG( TestObject*, pObj) );
}

void DynamicInvoke::printString( TestObject* testObj ) {
    qDebug() << testObj->str;
    testObj->deleteLater();
}

dynamicinvoke.h

#ifndef DYNAMICINVOKE_H
#define DYNAMICINVOKE_H
#include <QObject>
#include <QPointer>

class TestObject: public QObject
{
    Q_OBJECT
public:
    TestObject( const char* str );
    QString str;
};

class DynamicInvoke: public QObject
{
    Q_OBJECT
public:
    DynamicInvoke( QObject* parent = 0 );
    ~DynamicInvoke();
    void doInvoke();
private slots:
    void printString( TestObject* );
};

//declare the TestObject as MetaType
Q_DECLARE_METATYPE( TestObject* )

#endif // DYNAMICINVOKE_H

gistfile1.txt

Copy all the files in this project to your QT creator, rebuild and run it.

main.cpp

#include <QCoreApplication>
#include <QThread>
#include "dynamicinvoke.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    DynamicInvoke dInvoke;
    QThread thread;

    dInvoke.moveToThread( &thread );
    thread.start();

    dInvoke.doInvoke();
    return a.exec();
}

QtDynamicInvokeTest.pro

#-------------------------------------------------
#
# Project created by QtCreator 2014-06-24T03:02:08
#
#-------------------------------------------------

QT       += core

QT       -= gui

TARGET = QtDynamicInvokeTest
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app


SOURCES += main.cpp \
    dynamicinvoke.cpp

HEADERS += \
    dynamicinvoke.h