QT第三天，水果计价界面和功能

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); //初始化ui界面 this->initUi(); //选中更新价格 connect(ui->listWidgetFruit, SIGNAL(itemClicked(QListWidgetItem *)),\ this, SLOT(listWidgetFruitItemClickedSlotFun(QListWidgetItem *))); connect(ui->dSpinBoxPrice, SIGNAL(valueChanged(double)), this, SLOT(totalPriceCountSoltFun(double))); connect(ui->dSpinBoxWeight, SIGNAL(valueChanged(double)), this, SLOT(totalPriceCountSoltFun(double))); } Widget::~Widget() { delete ui; } void Widget::initUi() { //设置价格初值 ui->dSpinBoxPrice->setSuffix("元/斤"); ui->dSpinBoxPrice->setValue(0.0); //ui->dSpinBoxPrice->setMinimum(2.2); ui->dSpinBoxPrice->setMaximum(30.0); ui->dSpinBoxWeight->setSuffix("斤"); ui->dSpinBoxWeight->setValue(0.0); ui->dSpinBoxWeight->setMaximum(50.0); ui->dSpinBoxTotalprice->setSuffix("元"); ui->dSpinBoxTotalprice->setMaximum(1500.0); ui->dSpinBoxTotalprice->setValue(ui->dSpinBoxPrice->value() * ui->dSpinBoxWeight->value()); //添加水果 QString fruitName[] = {"苹果","香蕉","樱桃","椰子","哈密瓜","水蜜桃"}; QString fruitIcon[] = {":/ico/Apple.ico",":/ico/Banana.ico",\ ":/ico/Cherry.ico",":/ico/Coconut.ico",\ ":/ico/Hami_melon.ico",":/ico/Juicy_peach.ico"}; for (int i = 0;i<6;i++) { QListWidgetItem *qFruit = new QListWidgetItem(); qFruit->setText(fruitName[i]); qFruit->setIcon(QIcon(fruitIcon[i])); ui->listWidgetFruit->addItem(qFruit); } ui->listWidgetFruit->setViewMode(QListWidget::IconMode); } void Widget::listWidgetFruitItemClickedSlotFun(QListWidgetItem *) { //定制价格 double price[] = {3.2, 2.3, 25.48, 15.0, 3.5, 10.8}; //获取第几个被选中 int index = ui->listWidgetFruit->currentRow(); //更新价格 ui->dSpinBoxPrice->setValue(price[index]); } void Widget::totalPriceCountSoltFun(double) { ui->dSpinBoxTotalprice->setValue(ui->dSpinBoxPrice->value() * ui->dSpinBoxWeight->value()); }