对话框--QDialog(自定义对话框简单实例)

//dialog.h头文件

#ifndef DIALOG_H

#define DIALOG_H

#include <QtGui/QDialog>

#include <QtGui/QtGui>

#include <QtCore/QTextCodec>

#include <QHBoxLayout>

class QLineEdit;

namespace Ui {

class Dialog;

}

class Dialog : public QDialog

{

Q_OBJECT

public:

explicit Dialog(QWidget *parent = 0);

~Dialog();

public slots:

virtual void accept();

private:

QLineEdit * usrLineEdit;

QLineEdit * pwdLineEdit;

};

#endif // DIALOG_H

//dialog.cpp源文件

#include "dialog.h"

Dialog::Dialog(QWidget *parent) :

QDialog(parent)

{

QTextCodec::setCodecForTr(QTextCodec::codecForName("gb18030"));

QLabel *usrLabel = new QLabel(tr("用户名："));

QLabel *pwdLabel = new QLabel(tr("密 码："));

usrLineEdit = new QLineEdit;

pwdLineEdit = new QLineEdit;

pwdLineEdit->setEchoMode(QLineEdit::Password);

QGridLayout *gridLayout = new QGridLayout;

gridLayout->addWidget(usrLabel,0,0,1,1);

gridLayout->addWidget(pwdLabel,1,0,1,1);

gridLayout->addWidget(usrLineEdit,0,1,1,3);

gridLayout->addWidget(pwdLineEdit,1,1,1,3);

QPushButton *okBtn = new QPushButton(tr("确定"));

QPushButton *cancelBtn = new QPushButton(tr("取消"));

QHBoxLayout *btnLayout = new QHBoxLayout;

btnLayout->setSpacing(60);

btnLayout->addWidget(okBtn);

btnLayout->addWidget(cancelBtn);

QVBoxLayout *dlgLayout = new QVBoxLayout;

dlgLayout->setMargin(40);

dlgLayout->addLayout(gridLayout);

dlgLayout->addStretch(40);

dlgLayout->addLayout(btnLayout);

setLayout(dlgLayout);

connect(okBtn,SIGNAL(clicked()),this,SLOT(accept()));

connect(cancelBtn,SIGNAL(clicked()),this,SLOT(reject()));

setWindowTitle(tr("登录"));

resize(300,200);

}

Dialog::~Dialog()

{

}

void Dialog::accept()

{

if (usrLineEdit->text().trimmed() == tr("lcf") && pwdLineEdit->text() == tr("lcf"))

{

QDialog::accept();

}

else

{

QMessageBox::warning(this,tr("警告"),tr("用户名或密码错误"),QMessageBox::Yes);

usrLineEdit->setFocus();

}

}

//main.cpp主程序

#include <QtGui/QApplication>

#include "dialog.h"

int main(int argc, char *argv[])

{

QApplication a(argc, argv);

Dialog *dd = new Dialog;

dd->show();

return a.exec();

}

from：http://blog.sina.com.cn/s/blog_726c4bd201010oa4.html