1.效果圖

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2.代碼文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-540520.html

#include "widget.h"
#include "ui_widget.h"
#include <QApplication>
#include <QWidget>
#include <QtWidgets>

Widget::Widget(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);

    this->setWindowTitle("時(shí)光機(jī)");
    //更改界面尺寸
    this->resize(800,600);//重新設(shè)置尺寸的函數(shù)
    this->resize(QSize(400,500));//使用重載的函數(shù)重新設(shè)計(jì)尺寸，參數(shù)是一個(gè)匿名對(duì)象

    this->setFixedSize(500,700);

    //去掉組建上部的頭

    //添加圖標(biāo)
    this->setWindowIcon(QIcon("C:\\Users\\Owner\\Desktop\\華清\\圖標(biāo)\\Disco.png"));

    //使用樣式表更改顏色
    this->setStyleSheet("background-color:#FF69B4;");

    QLabel *label1 = new QLabel(this);
    label1->setGeometry(140,90,200,200);
    QPixmap pixmap;
    pixmap.load("C:\\Users\\Owner\\Desktop\\華清\\圖標(biāo)\\太空兔1.png");
    label1->setPixmap(pixmap);
    label1->setScaledContents(true);
    label1->setStyleSheet("QLabel{border-radius: 100%;background-color:#F3FEB0;}");


    QLineEdit *input1=new QLineEdit(this);
    input1->setGeometry(100,350,300,50);
    input1->setStyleSheet("QLineEdit{font:20px;color:#FF69B4;background-color:#F3FEB0;border-radius: 10px;border:none;padding-left:10px;}");
    input1->setPlaceholderText("Please enter account");
    input1->setMaxLength(6);

    //驗(yàn)證-給輸入框加輸入限制
    QRegExpValidator validator(QRegExp("[A-Za-z0-9_]+"), input1);
    input1->setValidator(&validator);

    //圖標(biāo)-給輸入框內(nèi)加圖標(biāo)
    QAction *searchAction1 = new QAction(input1);
    searchAction1->setIcon(QIcon("C:\\Users\\Owner\\Desktop\\華清\\圖標(biāo)\\頭像.png"));
    input1->addAction(searchAction1,QLineEdit::LeadingPosition);

    QLineEdit *input2=new QLineEdit(this);
    input2->setGeometry(100,430,300,50);
    input2->setStyleSheet("QLineEdit{font:20px;color:#FF69B4;background-color:#F3FEB0;border-radius: 10px;border:none;padding-left:10px;}");
    input2->setPlaceholderText("Please enter password");
    input2->setEchoMode(QLineEdit::Password);
    input2->setMaxLength(8);
    // 創(chuàng)建一個(gè) QRegExpValidator，并設(shè)置正則表達(dá)式和父對(duì)象

    QAction *searchAction2 = new QAction(input2);
    searchAction2->setIcon(QIcon("C:\\Users\\Owner\\Desktop\\華清\\圖標(biāo)\\mima.png"));
    input2->addAction(searchAction2,QLineEdit::LeadingPosition);

    QPushButton *btn1=new QPushButton(QIcon("C:\\Users\\Owner\\Desktop\\華清\\圖標(biāo)\\Dingdong.png"),"LOGIN",this);
    btn1->setGeometry(100,550,300,50);
    btn1->setStyleSheet("QPushButton{font:20px;color:#FF69B4;background-color:#F3FEB0;border-radius: 10px;font-weight:bold;letter-spacing: 8px;}");

}

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

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