QT周五作业

题目：实现简单水果的价格重量计算

点击一次水果重量+1 自动计算总价

代码：

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QListWidgetItem>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();public slots:void itemclickedFun(QListWidgetItem *p);
private:Ui::Widget *ui;
};
#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);QListWidgetItem *ppeach = new QListWidgetItem;ppeach->setIcon(QIcon(":/rs/桃子.png"));ppeach->setText("桃子 ￥ 10/kg");ui->listWidget->addItem(ppeach);QListWidgetItem *pmango = new QListWidgetItem;pmango->setIcon(QIcon(":/rs/芒果.png"));pmango->setText("芒果 ￥ 20/kg");ui->listWidget->addItem(pmango);QListWidgetItem *papple = new QListWidgetItem;papple->setIcon(QIcon(":/rs/苹果.png"));papple->setText("苹果 ￥ 15/kg");ui->listWidget->addItem(papple);QListWidgetItem *ppenapple = new QListWidgetItem;ppenapple->setIcon(QIcon(":/rs/菠萝.png"));ppenapple->setText("菠萝 ￥ 18/kg");ui->listWidget->addItem(ppenapple);QListWidgetItem *pbanana = new QListWidgetItem;pbanana->setIcon(QIcon(":/rs/香蕉.png"));pbanana->setText("香蕉 ￥ 8/kg");ui->listWidget->addItem(pbanana);QListWidgetItem *pwatermelon = new QListWidgetItem;pwatermelon->setIcon(QIcon(":/rs/西瓜.png"));pwatermelon->setText("西瓜 ￥ 4/kg");ui->listWidget->addItem(pwatermelon);ui->listWidget->setViewMode(QListView::IconMode);connect(ui->listWidget,SIGNAL(itemClicked(QListWidgetItem *)),this,SLOT(itemclickedFun(QListWidgetItem *)));
}Widget::~Widget()
{delete ui;
}void Widget::itemclickedFun(QListWidgetItem *p)
{if(p->text() == "桃子 ￥ 10/kg"){static int nump = 0;nump ++;ui->lineEdit->setText("10");ui->lineEdit_2->setText(QString("%1").arg(nump));ui->lineEdit_3->setText(QString("%1").arg(nump*10));ui->label_4->setText("你选择的水果是桃子");}if(p->text() == "芒果 ￥ 20/kg"){static int numm = 0;numm ++;ui->lineEdit->setText("20");ui->lineEdit_2->setText(QString("%1").arg(numm));ui->lineEdit_3->setText(QString("%1").arg(numm*20));ui->label_4->setText("你选择的水果是芒果");}if(p->text() == "苹果 ￥ 15/kg"){static int numa = 0;numa ++;ui->lineEdit->setText("15");ui->lineEdit_2->setText(QString("%1").arg(numa));ui->lineEdit_3->setText(QString("%1").arg(numa*15));ui->label_4->setText("你选择的水果是苹果");}if(p->text() == "菠萝 ￥ 18/kg"){static int numpa = 0;numpa ++;ui->lineEdit->setText("18");ui->lineEdit_2->setText(QString("%1").arg(numpa));ui->lineEdit_3->setText(QString("%1").arg(numpa*18));ui->label_4->setText("你选择的水果是菠萝");}if(p->text() == "西瓜 ￥ 4/kg"){static int numw = 0;numw ++;ui->lineEdit->setText("18");ui->lineEdit_2->setText(QString("%1").arg(numw));ui->lineEdit_3->setText(QString("%1").arg(numw*4));ui->label_4->setText("你选择的水果是西瓜");}if(p->text() == "香蕉 ￥ 8/kg"){static int numb = 0;numb ++;ui->lineEdit->setText("8");ui->lineEdit_2->setText(QString("%1").arg(numb));ui->lineEdit_3->setText(QString("%1").arg(numb*4));ui->label_4->setText("你选择的水果是香蕉");}
}