QObject类 moc处理后代码

QObject在QT中是所有类的基类，经过MOC处理后代码如下

之所以贴出这段代码，是因为很多流程追踪到最后一些关键性函数都是出自这个类

源码 4.8.6 MOC版本 63

 /****************************************************************************
 ** Meta object code from reading C++ file 'qobject.h'
 **
 ** Created by: The Qt Meta Object Compiler version 63 (Qt 4.8.6)
 **
 ** WARNING! All changes made in this file will be lost!
 *****************************************************************************/

 #include "qobject.h"
 #if !defined(Q_MOC_OUTPUT_REVISION)
 #error "The header file 'qobject.h' doesn't include <QObject>."
 #elif Q_MOC_OUTPUT_REVISION != 63
 #error "This file was generated using the moc from 4.8.6. It"
 #error "cannot be used with the include files from this version of Qt."
 #error "(The moc has changed too much.)"
 #endif

 QT_BEGIN_MOC_NAMESPACE
 static const uint qt_meta_data_QObject[] = {

  // content:
        ,       // revision
        ,       // classname
        ,    , // classinfo
        ,   , // methods
        ,   , // properties
        ,    , // enums/sets
        ,   , // constructors
        ,       // flags
        ,       // signalCount

  // signals: signature, parameters, type, tag, flags
        ,    ,    ,    , 0x05,
       ,    ,    ,    , 0x25,

  // slots: signature, parameters, type, tag, flags
       ,    ,    ,    , 0x0a,
       ,    ,    ,    , 0x08,

  // properties: name, type, flags
       ,   , 0x0a095103,

  // constructors: signature, parameters, type, tag, flags
      ,  ,    ,    , 0x0e,
      ,    ,    ,    , 0x2e,

                // eod
 };

 static const char qt_meta_stringdata_QObject[] = {
     "QObject\0\0destroyed(QObject*)\0destroyed()\0"
     "deleteLater()\0_q_reregisterTimers(void*)\0"
     "QString\0objectName\0parent\0QObject(QObject*)\0"
     "QObject()\0"
 };

 void QObject::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a)
 {
     if (_c == QMetaObject::CreateInstance) {
         switch (_id) {
         case : { QObject *_r = new QObject((*reinterpret_cast< QObject*(*)>(_a[])));
             if (_a[]) *reinterpret_cast<QObject**>(_a[]) = _r; } break;
         case : { QObject *_r = new QObject();
             if (_a[]) *reinterpret_cast<QObject**>(_a[]) = _r; } break;
         }
     } else if (_c == QMetaObject::InvokeMetaMethod) {
         Q_ASSERT(staticMetaObject.cast(_o));
         QObject *_t = static_cast<QObject *>(_o);
         switch (_id) {
         case : _t->destroyed((*reinterpret_cast< QObject*(*)>(_a[]))); break;
         case : _t->destroyed(); break;
         case : _t->deleteLater(); break;
         case : _t->d_func()->_q_reregisterTimers((*reinterpret_cast< void*(*)>(_a[]))); break;
         default: ;
         }
     }
 }

 const QMetaObjectExtraData QObject::staticMetaObjectExtraData = {
     ,  qt_static_metacall
 };

 const QMetaObject QObject::staticMetaObject = {
     { , qt_meta_stringdata_QObject,
       qt_meta_data_QObject, &staticMetaObjectExtraData }
 };

 #ifdef Q_NO_DATA_RELOCATION
 const QMetaObject &QObject::getStaticMetaObject() { return staticMetaObject; }
 #endif //Q_NO_DATA_RELOCATION

 const QMetaObject *QObject::metaObject() const
 {
     return QObject::d_ptr->metaObject ? QObject::d_ptr->metaObject : &staticMetaObject;
 }

 void *QObject::qt_metacast(const char *_clname)
 {
     if (!_clname) return ;
     if (!strcmp(_clname, qt_meta_stringdata_QObject))
         return static_cast<void*>(const_cast< QObject*>(this));
     return ;
 }

 int QObject::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
 {
     if (_id < )
         return _id;
     if (_c == QMetaObject::InvokeMetaMethod) {
         if (_id < )
             qt_static_metacall(this, _c, _id, _a);
         _id -= ;
     }
 #ifndef QT_NO_PROPERTIES
       else if (_c == QMetaObject::ReadProperty) {
         void *_v = _a[];
         switch (_id) {
         case : *reinterpret_cast< QString*>(_v) = objectName(); break;
         }
         _id -= ;
     } else if (_c == QMetaObject::WriteProperty) {
         void *_v = _a[];
         switch (_id) {
         case : setObjectName(*reinterpret_cast< QString*>(_v)); break;
         }
         _id -= ;
     } else if (_c == QMetaObject::ResetProperty) {
         _id -= ;
     } else if (_c == QMetaObject::QueryPropertyDesignable) {
         _id -= ;
     } else if (_c == QMetaObject::QueryPropertyScriptable) {
         _id -= ;
     } else if (_c == QMetaObject::QueryPropertyStored) {
         _id -= ;
     } else if (_c == QMetaObject::QueryPropertyEditable) {
         _id -= ;
     } else if (_c == QMetaObject::QueryPropertyUser) {
         _id -= ;
     }
 #endif // QT_NO_PROPERTIES
     return _id;
 }

 // SIGNAL 0
 void QObject::destroyed(QObject * _t1)
 {
     void *_a[] = { , const_cast<void*>(reinterpret_cast<const void*>(&_t1)) };
     QMetaObject::activate(this, &staticMetaObject, , _a);
 }
 QT_END_MOC_NAMESPACE

仅供参考，做一些深层次的分析