1.使用手动连接,将登录框中的取消按钮使用t4版本的连接到自定义的槽函数中,在自定义的槽函数中调用关闭函数将登录按钮使用t5版本的连接到自定义的槽函数中,在槽函数中判断u界面上输入的账号是否为"admin",密码是否为"123456"如果账号密码匹配成功,则输出“登录成功”,并关闭该界面,如果匹配失败,则输出登录失败,并将密码框中的内容清空
head.h
#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include<QPushButton>
#include<QDebug>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();public slots:void on_cancle_clicked();void log_btnslot();private:Ui::Widget *ui;
};
#endif // WIDGET_H
main.cpp
#include "widget.h"#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);Widget w;w.show();return a.exec();
}
widget.cpp
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);ui->log_lab->setPixmap(QPixmap(":/pictrue/宿舍.png"));ui->log_lab->setScaledContents(true);ui->usrname_lab->setPixmap(QPixmap(":/pictrue/userName.jpg"));ui->usrname_lab->setScaledContents(true);ui->passwd_lab->setPixmap(QPixmap(":/pictrue/passwd.jpg"));ui->passwd_lab->setScaledContents(true);ui->username_edit->setPlaceholderText("手机号/QQ号");ui->passwd_edit->setEchoMode(QLineEdit::Password);ui->passwd_edit->setPlaceholderText("密码");//登录按钮对应的槽函数connect(ui->log_btn,&QPushButton::clicked,this,&Widget::log_btnslot);//cancel按钮对应的曹函数connect(ui->cancle,SIGNAL(clicked()),this,SLOT(on_cancle_clicked()));
}Widget::~Widget()
{delete ui;
}//cancel按钮对应的曹函数
void Widget::on_cancle_clicked()
{this->close();
}void Widget::log_btnslot()
{if(ui->username_edit->text()=="admin"&ui->passwd_edit->text()=="123456"){qDebug()<<"登录成功";this->close();}else{qDebug()<<"登陆失败";ui->username_edit->clear();ui->passwd_edit->clear();}}
运行结果:
2.自己完成一个使用qss的登陆窗口界面
*{background-color: rgb(255, 255, 255);
}
QFrame#frame{border-image: url(:/pic/yf.jpg);border-radius:30px;}
#frame_2{border-radius:30px;background-color: rgba(138, 138, 138, 120);
}
QLabel#label{background:transparent;font: 75 9pt "ADMUI3Lg";color: rgb(0, 0, 0);font: 20pt "楷体";
}
QLineEdit{background:transparent;border:none;border-bottom:1px solid rgba(255, 255, 255, 200);font: 11pt "等线";color: rgba(255, 255, 255, 240);}
QPushButton{border-radius:10px;font: 15pt "等线";color: rgba(255, 255, 255, 200);background-color: rgb(170, 170, 127);
}
QPushButton:hover{border-radius:10px;font: 15pt "等线";color: rgba(255, 255, 255, 200);background-color: rgb(170, 170, 127);
}
QPushButton:pressed{border-radius:10px;font: 15pt "等线";color: rgba(255, 255, 255, 200);background-color: rgb(170, 170, 127);padding-top:5px;paddint-left:5px;
}
widget.cpp
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);//去掉头部this->setWindowFlag(Qt::FramelessWindowHint);//去掉空白this->setAttribute(Qt::WA_TranslucentBackground);
}Widget::~Widget()
{delete ui;
}
运行结果: