完善对话框,点击登录对话框,如果账号和密码匹配,则弹出信息对话框,给出提示”登录成功“,提供一个Ok按钮,用户点击Ok后,关闭登录界面,跳转到其他界面
如果账号和密码不匹配,弹出错误对话框,给出信息”账号和密码不匹配,是否重新登录“,并提供两个按钮Yes|No,用户点击Yes后,清除密码框中的内容,继续让用户进行登录,如果用户点击No按钮,则直接关闭登录界面
如果用户点击取消按钮,则弹出一个问题对话框,给出信息”您是否确定要退出登录?“,并给出两个按钮Yes|No,用户点击Yes后,关闭登录界面,用户点击No后,关闭对话框,继续执行登录功能
要求:(基于属性版、静态成员函数都使用)实现对话框的弹出
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);this->setWindowFlag(Qt::FramelessWindowHint);this->setAttribute(Qt::WA_TranslucentBackground);
// ui->btn1->setParent(this);
// ui->btn2->showMaximized();}Widget::~Widget()
{delete ui;
}void Widget::on_btn1_clicked()
{QString usrname=ui->lineEdit->text();QString passwd=ui->lineEdit_2->text();if(usrname=="admin"&&passwd=="123456"){//属性实现QMessageBox msgbox(QMessageBox::Information,"","登陆成功",QMessageBox::Ok,this);int res=msgbox.exec();if(res==QMessageBox::Ok){this->close();emit my_sianal();}}else{//属性实现QMessageBox msgbox1(QMessageBox::Critical,"","账号和密码不匹配,是否重新登录",QMessageBox::Yes|QMessageBox::No,this);int res2=msgbox1.exec();if(res2==QMessageBox::Yes){ui->lineEdit_2->clear();ui->lineEdit_2->setPlaceholderText("账号或者密码错误");}else if(res2==QMessageBox::No){this->close();}}
}void Widget::on_btn2_clicked()
{//静态成员函数实现int res=QMessageBox::question(this,"","您是否确定要退出登录");if(res==QMessageBox::Yes){this->close();}else if(res==QMessageBox::No){}
}
使用定时器事件 实现闹钟
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);id=startTimer(1000);
}Widget::~Widget()
{delete ui;
}void Widget::timerEvent(QTimerEvent *e)
{if(e->timerId()==id){QTime sys_time=QTime::currentTime();QString s=sys_time.toString("hh::mm::ss");ui->lab1->setText(s);ui->lab1->setAlignment(Qt::AlignCenter);}else if(e->timerId()==id2){QTime sys_time=QTime::currentTime();QString s=sys_time.toString("hh::mm::ss");if(s==ui->lineEdit->text()){QTextToSpeech *speaker=new QTextToSpeech;speaker->say(ui->lab2->text());}}
}void Widget::on_pushButton_clicked()
{if(ui->pushButton->text()=="启动"){id2=startTimer(190);ui->pushButton->setText("关闭");}else if(ui->pushButton->text()=="关闭"){killTimer(id2);ui->pushButton->setText("启动");}}