QT编程之作业3

要求：一个简单的登录页面，模仿QQ登录，然后点击按钮进行数据的注册，注册成功后返回登录页面有用户名和密码的信息。

运行结果如图所示：

下面是我写的代码

第一个是登录logindialog.h

#ifndef LOGINDIALOG_H
#define LOGINDIALOG_H

#include <QDialog>

namespace Ui {
class LoginDialog;
}

class LoginDialog : public QDialog
{
    Q_OBJECT

public:
    explicit LoginDialog(QWidget *parent = 0);
    //explicit LoginDialog(QString username,QString password,QWidget *parent = 0);
    ~LoginDialog();

private slots:
    void on_zcpushButton_clicked();
    void getValue(QString user,QString paswd);

private:
    Ui::LoginDialog *ui;
};

#endif // LOGINDIALOG_H

第二个是注册zcdialog.h

#ifndef LOGINDIALOG_H
#define LOGINDIALOG_H

#include <QDialog>

namespace Ui {
class LoginDialog;
}

class LoginDialog : public QDialog
{
    Q_OBJECT

public:
    explicit LoginDialog(QWidget *parent = 0);
    //explicit LoginDialog(QString username,QString password,QWidget *parent = 0);
    ~LoginDialog();

private slots:
    void on_zcpushButton_clicked();
    void getValue(QString user,QString paswd);

private:
    Ui::LoginDialog *ui;
};

#endif // LOGINDIALOG_H

第三个是logindialog.cpp

#include "logindialog.h"
#include "ui_logindialog.h"
#include<zcdialog.h>
LoginDialog::LoginDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::LoginDialog)
{
    ui->setupUi(this);
}
/*
LoginDialog::LoginDialog(QString username, QString password, QWidget *parent):
    QDialog(parent),
    ui(new Ui::LoginDialog)
{
    ui->setupUi(this);
    ui->userlineEdit->setText(username);
    ui->pwdlineEdit->setText(password);
}
*/
LoginDialog::~LoginDialog()
{
    delete ui;
}

void LoginDialog::on_zcpushButton_clicked()
{

    ZcDialog *pdlg = new ZcDialog;
    connect(pdlg, SIGNAL(retvalue(QString,QString)),this, SLOT(getValue(QString,QString)));

    pdlg->setAttribute(Qt::WA_DeleteOnClose);
    pdlg->show();
}

void LoginDialog::getValue(QString user, QString paswd)
{
    ui->userlineEdit->setText(user);
    ui->pwdlineEdit->setText(paswd);
}

第四个是main.cpp

#include "logindialog.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    LoginDialog w;
    w.show();
    w.setWindowTitle("QQ登录窗口");
    return a.exec();
}

第五个是zcdialog.cpp

#include "zcdialog.h"
#include "ui_zcdialog.h"
#include<QMessageBox>
#include<logindialog.h>
#include<QTimer>
#include<windows.h>
#include<QProgressBar>
#include<QProgressDialog>
ZcDialog::ZcDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::ZcDialog)
{
    ui->setupUi(this);
    //暗文生成
    ui->pwdlineEdit->setEchoMode(QLineEdit::Password);
    //组默认选择
    ui->boyradioButton->setChecked(true);

}

ZcDialog::~ZcDialog()
{
    delete ui;
}

void ZcDialog::on_zc2pushButton_clicked()
{
    if(ui->userlineEdit->text().trimmed()!=""&&ui->pwdlineEdit->text().trimmed()!="")
    {

        QProgressDialog dialog(tr("注册进行中"),tr("取消"),0,99,this);
           dialog.setWindowTitle(tr("进度条对话框"));
           dialog.setWindowModality(Qt::WindowModal);
           dialog.show();
           for(int i=0;i<=99;i++)
           {
               dialog.setValue(i);
               Sleep(50);
               //QCoreApplication::processEvents();//防止界面冻结
               if(dialog.wasCanceled()) return; //取消就中断
               if(i==99)
               {
                   QMessageBox::information(this,tr("系统提示"),tr("注册完毕"),QMessageBox::Ok);
               }
               }
        //QMessageBox::information(this,tr("提示"),tr("注册成功"),QMessageBox::Ok|QMessageBox::Default);
        #if 0
        //模态
        QString username=ui->userlineEdit->text();
        QString pwd=ui->pwdlineEdit->text();
        LoginDialog log(username,pwd);
        log.exec();
        #endif
        //非模态窗口
        QString username=ui->userlineEdit->text();
        QString pwd=ui->pwdlineEdit->text();
        emit  retvalue(username,pwd);
        this->close();

    }
    else
    {
       QMessageBox::warning(this,"warning","用户名或者密码不能为空",QMessageBox::Yes);
    }

}

void ZcDialog::on_cancelpushButton_clicked()
{
     this->close();
}

最后完工！

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