1.实现登录界面

头文件

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
};
#endif // WIDGET_H

源文件

#include "widget.h"
#include <QIcon>
#include <QPushButton>
#include <QLabel>
#include <QMovie>
#include <QLineEdit>


Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
    this->setWindowTitle("Metal Gear Solid V");
    this->setWindowIcon(QIcon("D:/Game/1.png"));
    this->setFixedSize(600,800);
    this->setStyleSheet("background-color:black");
    QPushButton *ptr1 = new QPushButton("登录",this);
    ptr1->resize(100,40);
    ptr1->move(120,700);
    ptr1->setStyleSheet("background-color: white; color: black;");
    QPushButton *ptr2 = new QPushButton("取消",this);
    ptr2->resize(100,40);
    ptr2->move(400,700);
    ptr2->setStyleSheet("background-color: white; color: black;");
    QLabel *ptr3 = new QLabel(this);
    ptr3->resize(600,300);
    ptr3->move(0,0);
    QMovie *movie = new QMovie("D:/Game/2.gif");
    ptr3->setMovie(movie);
    movie->start();
    ptr3->setScaledContents(true);
    QLabel *ptr4 = new QLabel("账号:",this);
    ptr4->move(ptr1->x(),ptr1->y()-200);
    ptr4->resize(100,40);
    ptr4->setStyleSheet("color: white;");
    QLabel *ptr5 = new QLabel("密码:",this);
    ptr5->move(ptr1->x(),ptr1->y()-150);
    ptr5->resize(100,40);
    ptr5->setStyleSheet("color: white;");
    QLineEdit *ptr6 = new QLineEdit(this);
    ptr6->resize(300,40);
    ptr6->move(ptr4->x()+50,ptr4->y());
    ptr6->setStyleSheet("color: white;");
    QLineEdit *ptr7 = new QLineEdit(this);
    ptr7->resize(300,40);
    ptr7->move(ptr5->x()+50,ptr5->y());
    ptr7->clear();
    ptr7->setPlaceholderText("输入密码");
    ptr7->setStyleSheet("color: white;");
    ptr7->setEchoMode(QLineEdit::Password);
}
Widget::~Widget()
{
}

主函数
 

#include "widget.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}

思维导图