//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
