初学QT对话框，一个按钮的实现，目的是学着QT的信号和槽，还有使用QTCreator结合QT 设计器的方法

/**************************************************************************** ** Meta object code from reading C++ file 'testdialog.h' ** ** Created: Sun Feb 21 13:11:42 2010 ** by: The Qt Meta Object Compiler version 61 (Qt 4.5.2) ** ** WARNING! All changes made in this file will be lost! *****************************************************************************/ #include "testdialog.h" #if !defined(Q_MOC_OUTPUT_REVISION) #error "The header file 'testdialog.h' doesn't include <QObject>." #elif Q_MOC_OUTPUT_REVISION != 61 #error "This file was generated using the moc from 4.5.2. 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_TestDialog[] = { // content: 2, // revision 0, // classname 0, 0, // classinfo 1, 12, // methods 0, 0, // properties 0, 0, // enums/sets 0, 0, // constructors // slots: signature, parameters, type, tag, flags 12, 11, 11, 11, 0x08, 0 // eod }; static const char qt_meta_stringdata_TestDialog[] = { "TestDialog\0\0btn_click()\0" }; const QMetaObject TestDialog::staticMetaObject = { { &QDialog::staticMetaObject, qt_meta_stringdata_TestDialog, qt_meta_data_TestDialog, 0 } }; const QMetaObject *TestDialog::metaObject() const { return &staticMetaObject; } void *TestDialog::qt_metacast(const char *_clname) { if (!_clname) return 0; if (!strcmp(_clname, qt_meta_stringdata_TestDialog)) return static_cast<void*>(const_cast< TestDialog*>(this)); return QDialog::qt_metacast(_clname); } int TestDialog::qt_metacall(QMetaObject::Call _c, int _id, void **_a) { _id = QDialog::qt_metacall(_c, _id, _a); if (_id < 0) return _id; if (_c == QMetaObject::InvokeMetaMethod) { switch (_id) { case 0: btn_click(); break; default: ; } _id -= 1; } return _id; } QT_END_MOC_NAMESPACE