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class MyApp : public QApplication,public QObject
{
Q_OBJECT
...
}
这是我的(凌乱)Main.cpp：
#include <QtGui/QApplication>
#include "qmlapplicationviewer.h"
#include <QObject>
#include <QGraphicsObject>
#include <QTimer>
#include <QVariant>
#include "timecontrol.h"
#include "scorecontrol.h"
#include "Retry.h"
#include <QEvent>
#include "myapp.h"
int main(int argc,char *argv[])
{
MyApp app(argc,argv);
QmlApplicationViewer viewer;
viewer.setOrientation(QmlApplicationViewer::ScreenOrientationLockLandscape);
viewer.setMainQmlFile(Qlatin1String("qml/Raker/main.qml"));
viewer.showExpanded();
QObject *rootObject = viewer.rootObject();
QTimer *timmer = new QTimer;
timmer->setInterval(1000);
TimeControl *timcon = new TimeControl;
scorecontrol *scorer = new scorecontrol;
Retry *probeer = new Retry;
QObject::connect(timmer,SIGNAL(timeout()),timcon,SLOT(updateTime()));
QObject::connect(timcon,SIGNAL(setTime(QVariant)),rootObject,SLOT(setTime(QVariant)));
QObject::connect(rootObject,SIGNAL(blockClicked(int,int)),scorer,SLOT(checkRight(int,int)));
QObject::connect(scorer,SIGNAL(setscore(QVariant)),SLOT(setscore(QVariant)));
QObject::connect(scorer,SIGNAL(setState(QVariant)),SLOT(setState(QVariant)));
QObject::connect(rootObject,SIGNAL(start()),probeer,SLOT(Reetry()));
QObject::connect(probeer,timmer,SLOT(start()));
QObject::connect(probeer,SIGNAL(stop()),SLOT(stop()));
QObject::connect(probeer,SIGNAL(start(int)),SLOT(randomNum(int)));
QObject::connect(probeer,SIGNAL(sReset()),SLOT(reset()));
QObject::connect(probeer,SIGNAL(tReset()),SLOT(reset()));
QObject::connect(timcon,SIGNAL(timeOut()),SLOT(reset()));
QObject::connect(timcon,SLOT(setState(QVariant)));
QObject::connect(timcon,SIGNAL(changeFinal()),SLOT(changeFinal()));
QObject::connect(scorer,SIGNAL(setFinal(QVariant)),SLOT(setFinal(QVariant)));
QObject::connect(&app,SIGNAL(focusL()),SLOT(focusL()));
QObject::connect(&app,SIGNAL(focusG()),SLOT(focusG()));
return app.exec();
}
MyApp.cpp中：
#include "myapp.h"
#include <QDebug>
#include <QObject>
MyApp::MyApp(int argc,char **argv): QApplication(argc,argv)
{
installEventFilter(this);
}
bool MyApp::eventFilter(QObject *object,QEvent *event)
{
if (event->type() == QEvent::ApplicationDeactivate)
{
qDebug() << "Focus lost";
focusL();
}
if (event->type() == QEvent::ApplicationActivate)
{
qDebug() << "Focus gained";
focusG();
}
return false;
}
现在,您的继承图如下所示(请注意MyApp对象继承的两个QObject实例)：
| QObject | | QObject |
\ /
\ | QApplication |
\ /
\ /
| MyApp |
您应该保持继承图是线性的,而不是使用拆分继承方案,这意味着拥有一个只包含一个基类实例的派生类.所以你想要这样的东西：
QObject
|
|
QApplication
|
|
MyApp
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