F:\QT Compile\Test4_1\Test4_1\inputdialog.cpp:5: error: undefined reference to `

[康森森]

这是问题的代码，为什么会出现这个错误？？？
//.cpp
InputDialog::InputDialog(QWidget *parent)
: QDialog(parent)
{
setWindowTitle(tr("标准输入对话框实例"));

nameLabel1 = new QLabel(tr("姓名："));
nameLabel2 = new QLabel(tr("袁伟康"));
nameLabel2->setFrameStyle(QFrame::Panel | QFrame::Sunken);
namePushBtn = new QPushButton(tr("修改姓名"));

sexLabel1 = new QLabel(tr("性别："));
sexLabel2 = new QLabel(tr("男"));
sexLabel2->setFrameStyle(QFrame::Panel | QFrame::Sunken);
sexPushBtn = new QPushButton(tr("修改性别"));

ageLabel1 = new QLabel(tr("年龄："));
ageLabel2 = new QLabel(tr("22"));
ageLabel2->setFrameStyle(QFrame::Panel | QFrame::Sunken);
agePushBtn = new QPushButton(tr("修改年龄"));

scoreLabel1 = new QLabel(tr("成绩："));
scoreLabel2 = new QLabel(tr("80"));
scoreLabel2->setFrameStyle(QFrame::Panel | QFrame::Sunken);
scorePushBtn = new QPushButton(tr("修改成绩"));

mainLayout = new QGridLayout(this);
mainLayout->addWidget(nameLabel1, 0, 0);
mainLayout->addWidget(nameLabel2, 0, 1);
mainLayout->addWidget(namePushBtn, 0, 2);
mainLayout->addWidget(sexLabel1, 1, 0);
mainLayout->addWidget(sexLabel2, 1, 1);
mainLayout->addWidget(sexPushBtn, 1, 2);
mainLayout->addWidget(ageLabel1, 2, 0);
mainLayout->addWidget(ageLabel2, 2, 1);
mainLayout->addWidget(agePushBtn, 2, 2);
mainLayout->addWidget(scoreLabel1, 3, 0);
mainLayout->addWidget(scoreLabel2, 3, 1);
mainLayout->addWidget(scorePushBtn, 3, 2);

mainLayout->setMargin(15);
mainLayout->setSpacing(10);

connect(namePushBtn, SIGNAL(clicked()), this, SLOT(modifyName()));
connect(sexPushBtn, SIGNAL(clicked()), this, SLOT(modifySex()));
connect(agePushBtn, SIGNAL(clicked()), this, SLOT(modifyAge()));
connect(scorePushBtn, SIGNAL(clicked()), this, SLOT(modifyScore()));


///.h
class InputDialog : public QDialog
{
Q_OBJECT

public:
InputDialog(QWidget *parent = 0);
~InputDialog();
private:
QLabel *nameLabel1;
QLabel *nameLabel2;
QPushButton *namePushBtn;

QLabel *sexLabel1;
QLabel *sexLabel2;
QPushButton *sexPushBtn;

QLabel *ageLabel1;
QLabel *ageLabel2;
QPushButton *agePushBtn;

QLabel *scoreLabel1;
QLabel *scoreLabel2;
QPushButton *scorePushBtn;

QGridLayout *mainLayout;

private slots:
void modifyName();
void modifySex();
void modifyAge();
void modifyScore();
};

#endif

[sky_widely]

Q_OBJECT这个东西去掉，同时添加相应头文件。