代码void Index::on_pushButton_2_clicked(){ QList<QTableWidgetItem*> items = ui->tableWidget->selectedItems(); int count = items.count(); if(count!=0){ printer=new QPrinter(); QSettings settings("./saveFile/printsetting.ini",QSettings::IniFormat); settings.setIniCodec("UTF8"); settings.beginGroup("/systemCfg"); int value2 = settings.value("getModeSelect1").toInt(); settings.endGroup(); if(value2==0){ printer->setOrientation(QPrinter::Portrait); printer->setPageSize(QPrinter::A5); } pd = new QPrintPreviewDialog(printer); pd->setWindowFlags(windowFlags()&~Qt::WindowContextHelpButtonHint); if(value2==0||value2==1){ connect(pd,SIGNAL(paintRequested(QPrinter*)),this,SLOT(printPreview1(QPrinter*))); }else{ connect(pd,SIGNAL(paintRequested(QPrinter*)),this,SLOT(printPreview(QPrinter*))); } pd->resize(800,1050); pd->exec(); delete pd; delete printer; } }中怎么使用QPrintPreviewDialog类的静态函数setDefaultPrinter()保留打印预览的设置

void Widget::on_pushButton_clicked() { tcpclient->connectToHost(ui->lineEdit->text(),ui->lineEdit_2->text().toInt()); } void Widget::on_pushButton_2_clicked() { QString str=ui->lineEdit_3->text(); QByteArray qbyte=str.toUtf8(); char *cstr=qbyte.data(); qDebug()<<cstr<<endl; tcpclient->write(cstr,100); }这段代码的作用

第一个槽函数on_pushButton_clicked()会在用户点击pushButton按钮时被触发，它会根据用户在lineEdit和lineEdit_2输入框中的输入，使用tcpclient对象连接到指定的TCP服务器。第二个槽函数on_pushButton_...

#ifndef DIALOG_H #define DIALOG_H #include <QDialog> QT_BEGIN_NAMESPACE namespace Ui { class Dialog; } QT_END_NAMESPACE class QTimer; class Dialog : public QDialog { Q_OBJECT public: Dialog(QWidget parent = nullptr); ~Dialog(); private slots: void onTime(); void on_pushButton_start_01_clicked(); void on_pushButton_end_01_clicked(); void on_pushButton_start_02_clicked(); void on_pushButton_end_02_clicked(); void on_pushButton_start_03_clicked(); void on_pushButton_end_03_clicked(); private: Ui::Dialog ui; QTimer timer_ = nullptr; bool time_1 = false; bool time_2 = false; bool time_3 = false; }; #endif // DIALOG_H #include "dialog.h" #include "ui_dialog.h" #include <QDateTime> #include <QTimer> #include <QMessageBox> #include <QDebug> Dialog::Dialog(QWidget parent) : QDialog(parent) , ui(new Ui::Dialog) { ui->setupUi(this); timer_ = new QTimer (this); connect(timer_,&QTimer::timeout,this,&Dialog::onTime); timer_->start(1000); } Dialog::~Dialog() { delete ui; } void Dialog::onTime(){ auto time = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"); qint64 current_ms = QDateTime::currentDateTime().currentMSecsSinceEpoch(); qint64 ms_1 = ui->dateTimeEdit_clock01->dateTime().toMSecsSinceEpoch(); qint64 ms_2 = ui->dateTimeEdit_clock_02->dateTime().toMSecsSinceEpoch(); qint64 ms_3 = ui->dateTimeEdit_clock_03->dateTime().toMSecsSinceEpoch(); qDebug() << "time" << ms_1; qDebug() << "time2" <<ms_2; qDebug() << "time3" <<ms_3; qDebug() << "current_ms" << current_ms; if(current_ms >= ms_1 && time_1 == false){ time_1 = true; QMessageBox::information(this,"闹钟1","闹钟1的时间到了"); } if(current_ms >= ms_2 && time_2 == false){ time_2 = true; QMessageBox::information(this,"闹钟2","闹钟2的时间到了"); } if(current_ms >= ms_3 && time_3 == false){ time_3 = true; QMessageBox::information(this,"闹钟3","闹钟3的时间到了"); } ui->lcdNumber_clock->display(time); } void Dialog::on_pushButton_start_01_clicked() { ui->dateTimeEdit_clock01->setReadOnly(true); time_1 = false; } void Dialog::on_pushButton_end_01_clicked() { QMessageBox box(QMessageBox::Warning,"Warning","是否要重新设闹钟",QMessageBox::Yes|QMessageBox::No); int ret = box.exec(); if(ret == QMessageBox::Yes){ ui->dateTimeEdit_clock01->setReadOnly(false); ui->dateTimeEdit_clock01->clear(); } } void Dialog::on_pushButton_start_02_clicked() { } void Dialog::on_pushButton_end_02_clicked() { } void Dialog::on_pushButton_start_03_clicked() { } void Dialog::on_pushButton_end_03_clicked() { } 怎么通过按钮start和end控制闹钟的开始与停止，要求显示当前的时间不修改，只修改的是显示闹钟的界面

void Dialog::on_pushButton_end_01_clicked() { QMessageBox box(QMessageBox::Warning, "Warning", "是否要重新设闹钟", QMessageBox::Yes | QMessageBox::No); int ret = box.exec(); if (ret == ...

.ui <?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>MainWindow</class> <widget class="QMainWindow" name="MainWindow"> <rect> <x>0</x> <y>0</y> <width>800</width> <height>600</height> </rect> <string>MainWindow</string> <widget class="QWidget" name="centralwidget"> <layout class="QGridLayout" name="gridLayout_2"> <item row="0" column="0"> <layout class="QGridLayout" name="gridLayout"> <item row="0" column="0" colspan="4"> <widget class="QTableView" name="tableView"/> </item> <item row="1" column="0" colspan="4"> <widget class="QTextEdit" name="textEdit"/> </item> <item row="2" column="0"> <widget class="QPushButton" name="pushButton"> <string>PushButton</string> </widget> </item> <item row="2" column="1"> <widget class="QPushButton" name="pushButton_2"> <string>PushButton</string> </widget> </item> <item row="2" column="2"> <widget class="QPushButton" name="pushButton_3"> <string>PushButton</string> </widget> </item> <item row="2" column="3"> <widget class="QPushButton" name="pushButton_4"> <string>PushButton</string> </widget> </item> </layout> </item> </layout> </widget> <widget class="QMenuBar" name="menubar"> <rect> <x>0</x> <y>0</y> <width>800</width> <height>22</height> </rect> </widget> <widget class="QStatusBar" name="statusbar"/> </widget> <resources/> <connections/> </ui> 根据既有ui完善和更正cpp，最主要的是数据库中提取的数据一点要到已经建立好的textedit上，不要新建，其他可能问题自行查找并改出 mainwindow.cpp #include "mainwindow.h" #include "ui_mainwindow.h" #include <QFileDialog> #include <QTextStream> #include <QMessageBox> #include <QFont> #include <QItemSelectionModel> #include <QHeaderView> #include <QSqlQuery> #include <QSqlError> #include <QAbstractItemModel> MainWindow::MainWindow(QWidget parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); // 初始化数据库 loadDatabase(); // 设置模型到TableView ui->tableView->setModel(sqlModel); // 初始化文本编辑器 textEdit = new QTextEdit(this); // 创建状态栏组件 LabCurFile = new QLabel("当前文件：", this); LabCellPos = new QLabel("当前单元格：", this); LabCellPos->setMinimumWidth(180); LabCellPos->setAlignment(Qt::AlignHCenter); LabCellText = new QLabel("单元格内容：", this); ui->statusbar->addWidget(LabCurFile); ui->statusbar->addWidget(LabCellPos); ui->statusbar->addWidget(LabCellText); // 连接信号和槽 connect(ui->tableView->selectionModel(), &QItemSelectionModel::currentChanged, this, &MainWindow::on_currentChanged); // 初始化文本内容 updateTextEdit(); } MainWindow::~MainWindow() { delete ui; db.close(); } void MainWindow::loadDatabase() { db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName("D:/QT_PROGRAM/play32/lyshark-1.db"); if (!db.open()) { QMessageBox::critical(this, "错误", "无法打开数据库"); return; } // 初始化表结构 QSqlQuery query; query.exec("CREATE TABLE IF NOT EXISTS book (" "num INTEGER PRIMARY KEY AUTOINCREMENT, " "id VARCHAR(40) NOT NULL, " "title VARCHAR(40) NOT NULL, " "author VARCHAR(40) NOT NULL," "price VARCHAR(40) NOT NULL," "publisher VARCHAR(40) NOT NULL)" ); sqlModel = new QSqlTableModel(this); sqlModel->setTable("book"); sqlModel->setEditStrategy(QSqlTableModel::OnFieldChange); sqlModel->select(); // 插入示例数据（如果表为空） if (sqlModel->rowCount() == 0) { QSqlQuery insertQuery; insertQuery.exec("INSERT INTO book (id, title, author, price, publisher) VALUES " "('lyshark.cnblogs.com', 'm', '25', '1234567890', 'beijing'), " "('www.lyshark.com', 'x', '22', '4567890987', 'shanghai')"); } } void MainWindow::on_actionOpen_triggered() { QString curPath = QCoreApplication::applicationDirPath(); QString fileName = QFileDialog::getOpenFileName(this, "打开文件", curPath, "文本文件 (.txt);;所有文件 (.)"); if (fileName.isEmpty()) { return; } QFile file(fileName); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) { QMessageBox::warning(this, "错误", "无法打开文件"); return; } QTextStream in(&file); textEdit->setPlainText(in.readAll()); file.close(); LabCurFile->setText("当前文件：" + fileName); } void MainWindow::on_actionSave_triggered() { QString curPath = QCoreApplication::applicationDirPath(); QString fileName = QFileDialog::getSaveFileName(this, "保存文件", curPath, "文本文件 (.txt);;所有文件 (.*)"); if (fileName.isEmpty()) { return; } QFile file(fileName); if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) { QMessageBox::warning(this, "错误", "无法保存文件"); return; } QTextStream out(&file); out << textEdit->toPlainText(); file.close(); LabCurFile->setText("当前文件：" + fileName); } void MainWindow::on_actionAppend_triggered() { sqlModel->insertRow(sqlModel->rowCount()); } void MainWindow::on_actionInsert_triggered() { QModelIndex currentIndex = ui->tableView->selectionModel()->currentIndex(); if (!currentIndex.isValid()) { return; } sqlModel->insertRow(currentIndex.row()); } void MainWindow::on_actionDelete_triggered() { QModelIndex currentIndex = ui->tableView->selectionModel()->currentIndex(); if (!currentIndex.isValid()) { return; } sqlModel->removeRow(currentIndex.row()); sqlModel->submitAll(); } void MainWindow::on_actionPreview_triggered() { updateTextEdit(); } void MainWindow::on_currentChanged(const QModelIndex ¤t, const QModelIndex &previous) { Q_UNUSED(previous); if (current.isValid()) { LabCellPos->setText(QString("当前单元格：%1行，%2列").arg(current.row()).arg(current.column())); LabCellText->setText("单元格内容：" + sqlModel->data(current).toString()); } } void MainWindow::on_pushButton_center_clicked() { textEdit->setAlignment(Qt::AlignCenter); } void MainWindow::on_pushButton_left_clicked() { textEdit->setAlignment(Qt::AlignLeft); } void MainWindow::on_pushButton_right_clicked() { textEdit->setAlignment(Qt::AlignRight); } void MainWindow::on_pushButton_bold_clicked() { QFont font = textEdit->currentFont(); font.setBold(!font.bold()); textEdit->setCurrentFont(font); } void MainWindow::updateTextEdit() { textEdit->clear(); for (int i = 0; i < sqlModel->rowCount(); ++i) { QString rowText; for (int j = 0; j < sqlModel->columnCount(); ++j) { rowText += sqlModel->data(sqlModel->index(i, j)).toString() + "\t"; } textEdit->append(rowText.trimmed()); } } void MainWindow::on_actionExit_triggered() { QApplication::quit(); }

原代码中的槽函数（如on_pushButton_center_clicked）与UI中按钮的objectName（pushButton、pushButton_2等）不匹配，需在Qt Designer中修改按钮的objectName为pushButton_center、pushButton_left等...

<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>MainWindow</class> <widget class="QMainWindow" name="MainWindow"> <rect> <x>0</x> <y>0</y> <width>1200</width> <height>800</height> </rect> <string>手机销售管理系统</string> <widget class="QWidget" name="centralwidget"> <layout class="QVBoxLayout" name="verticalLayout" stretch="0,1"> <item> <widget class="QTabWidget" name="tabWidget"> <number>0</number> <widget class="QWidget" name="tab_PhoneManage"> <layout class="QVBoxLayout" name="layout_PhoneMain"> <layout class="QGridLayout" name="grid_PhoneInput" spacing="10"> <item row="0" column="0"> <widget class="QLabel" name="label_PhoneID"> <string>手机编号：</string> </widget> </item> <item row="0" column="1"> <widget class="QLineEdit" name="txtPhoneID"> <string>必填，20位以内</string> </widget> </item> <item row="0" column="2"> <widget class="QLabel" name="label_Model"> <string>手机型号：</string> </widget> </item> <item row="0" column="3"> <widget class="QLineEdit" name="txtModel"/> </item> <item row="1" column="0"> <widget class="QLabel" name="label_Brand"> <string>手机品牌：</string> </widget> </item> <item row="1" column="1"> <widget class="QLineEdit" name="txtBrand"/> </item> <item row="1" column="2"> <widget class="QLabel" name="label_PPrice"> <string>进价（元）：</string> </widget> </item> <item row="1" column="3"> <widget class="QDoubleSpinBox" name="txtPPrice"> <double>0.00</double> <number>2</number> </widget> </item> <item row="2" column="0"> <widget class="QLabel" name="label_Stock"> <string>库存数量：</string> </widget> </item> <item row="2" column="1"> <widget class="QSpinBox" name="txtStock"> <number>0</number> </widget> </item> </layout> <layout class="QHBoxLayout" name="layout_PhoneBtns" spacing="20"> <item> <widget class="QPushButton" name="btnAddPhone"> <string>添加手机</string> <size> <width>20</width> <height>20</height> </size> </widget> </item> <item> <widget class="QPushButton" name="btnModifyPhone"> <string>修改信息</string> </widget> </item> <item> <widget class="QPushButton" name="btnDeletePhone"> <string>删除手机</string> </widget> </item> <item> <widget class="QPushButton" name="btnRefreshPhone"> <string>刷新列表</string> </widget> </item> </layout> <widget class="QTableWidget" name="tablePhoneList"> <number>5</number> <number>0</number> <column> <string>编号</string> </column> <column> <string>型号</string> </column> <column> <string>品牌</string> </column> <column> <string>进价（元）</string> </column> <column> <string>库存</string> </column> <bool>true</bool> </widget> </layout> <string>手机管理</string> </widget> <widget class="QWidget" name="tab_SaleManage"> <layout class="QVBoxLayout" name="layout_SaleMain"> <layout class="QGridLayout" name="grid_SaleInput" spacing="10"> <item row="0" column="0"> <widget class="QLabel" name="label_SaleID"> <string>手机编号：</string> </widget> </item> <item row="0" column="1"> <widget class="QLineEdit" name="txtSaleID"> <string>需与手机编号一致</string> </widget> </item> <item row="0" column="2"> <widget class="QLabel" name="label_SPrice"> <string>销售单价：</string> </widget> </item> <item row="0" column="3"> <widget class="QDoubleSpinBox" name="txtSPrice"> <double>0.00</double> <number>2</number> </widget> </item> <item row="1" column="0"> <widget class="QLabel" name="label_SaleNum"> <string>销售数量：</string> </widget> </item> <item row="1" column="1"> <widget class="QSpinBox" name="txtSaleNum"> <number>1</number> </widget> </item> <item row="1" column="2"> <widget class="QLabel" name="label_SaleDate"> <string>销售日期：</string> </widget> </item> <item row="1" column="3"> <widget class="QDateEdit" name="dateSale"> <string>yyyy-MM-dd</string> <bool>true</bool> <date> <year>2024</year> <month>1</month> <day>1</day> </date> </widget> </item> </layout> <layout class="QHBoxLayout" name="layout_SaleBtns" spacing="20"> <item> <widget class="QPushButton" name="btnAddSale"> <string>添加销售记录</string> </widget> </item> <item> <widget class="QPushButton" name="btnRefreshSale"> <string>刷新销售记录</string> </widget> </item> </layout> <widget class="QTableWidget" name="tableSaleList"> <number>6</number> <number>0</number> <column> <string>编号</string> </column> <column> <string>型号</string> </column> <column> <string>品牌</string> </column> <column> <string>单价（元）</string> </column> <column> <string>数量</string> </column> <column> <string>销售日期</string> </column> <bool>true</bool> </widget> </layout> <string>销售管理</string> </widget> <widget class="QWidget" name="tab_Statistics"> <layout class="QVBoxLayout" name="layout_StatMain" spacing="15"> <layout class="QGridLayout" name="grid_StatInput" spacing="10"> <item row="0" column="0"> <widget class="QLabel" name="label_SearchID"> <string>按编号查询：</string> </widget> </item> <item row="0" column="1"> <widget class="QLineEdit" name="txtSearchID"/> </item> <item row="0" column="2"> <widget class="QPushButton" name="btnSearchID"> <string>查询</string> </widget> </item> <item row="1" column="0"> <widget class="QLabel" name="label_StatBrand"> <string>按品牌统计：</string> </widget> </item> <item row="1" column="1"> <widget class="QLineEdit" name="txtStatBrand"/> </item> <item row="1" column="2"> <widget class="QPushButton" name="btnStatBrand"> <string>统计</string> </widget> </item> </layout> <widget class="QTextBrowser" name="txtStatResult"> <size> <width>0</width> <height>200</height> </size> <string>查询/统计结果将显示在此...</string> </widget> </layout> <string>查询统计</string> </widget> <widget class="QWidget" name="tab_Sort"> <layout class="QVBoxLayout" name="layout_SortMain"> <layout class="QHBoxLayout" name="layout_SortBtns" spacing="30"> <item> <widget class="QPushButton" name="btnSortPrice"> <string>按进价排序（升序）</string> <size> <width>150</width> <height>40</height> </size> </widget> </item> <item> <widget class="QPushButton" name="btnSortDate"> <string>按销售日期排序（最近优先）</string> <size> <width>150</width> <height>40</height> </size> </widget> </item> </layout> <widget class="QLabel" name="label_SortTip"> <string>注：排序后自动刷新对应表格数据</string> <string>color: #666; font-size: 12px;</string> </widget> </layout> <string>排序管理</string> </widget> </widget> </item> </layout> </widget> <widget class="QMenuBar" name="menubar"> <rect> <x>0</x> <y>0</y> <width>1200</width> <height>26</height> </rect> <widget class="QMenu" name="menuFile"> <string>文件</string> <addaction name="actionSave"/> <addaction name="actionLoad"/> </widget> <addaction name="menuFile"/> </widget> <widget class="QStatusBar" name="statusbar"/> </widget> <action name="actionSave"> <string>保存数据</string> </action> <action name="actionLoad"> <string>加载数据</string> </action> <resources/> <connections/> </ui> 该ui文件读取第28行72列时出错，请改正并给出修改后的ui文件

<property name="text"><string>Save & Exit</string></property> 该行中的 & 是非法 XML 字符，会导致解析失败。正确的写法应为： xml <property name="text"><string>Save & Exit</string></...

FormSettings_Basic::FormSettings_Basic(QWidget parent) : QWidget(parent), ui(new Ui::FormSettings_Basic) { qDebug()<<"FormSettings_Basic(QWidget parent) start"; ui->setupUi(this); this->setWindowState(Qt::WindowFullScreen); // 设置quickWidget透明 ui->quickWidget->setAttribute(Qt::WA_AlwaysStackOnTop); ui->quickWidget->setClearColor(QColor(Qt::transparent)); ui->pushButton_beltset->setGeometry(100,50,600,300); ui->pushButton_GZM->setGeometry(950,50,600,300); ui->pushButton_CGQ->setGeometry(100,500,600,300); ui->pushButton_BHXX->setGeometry(950,500,580,295); QLabel lb = ui->label_Title; lb->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter); lb->adjustSize(); lb->move((this->width()-lb->width())/2,10); ui->quickWidget->rootContext()->setContextProperty("testData", this); ui->quickWidget->setSource(QUrl(QStringLiteral("qrc:/animator.qml"))); // 更新为Qt6风格的信号槽连接 //connect(ui->pushButton_beltset, &QPushButton::clicked, this, &FormSettings_Basic::BeltSetClicked); //connect(ui->pushButton_beltset, &QPushButton::clicked, beltset, &Form_BeltSetting::BeltSeting_show); qDebug()<<"FormSettings_Basic(QWidget parent) end"; } // 其他成员函数保持不变... // 事件过滤器更新 bool FormSettings_Basic::eventFilter(QObject object, QEvent event) { if (event->type() == QEvent::KeyPress) { QKeyEvent keyEvent = static_cast<QKeyEvent>(event); // 处理键盘事件... } return QWidget::eventFilter(object, event); } void FormSettings_Basic::on_pushButton_beltset_clicked() { emit BeltSetClicked();//函数直接发送信号 } void FormSettings_Basic::on_pushButton_BHXX_clicked() { emit protection_show(); } void FormSettings_Basic::on_pushButton_GZM_clicked() { emit GZMTZ_show(); } 编译报错:-1: error: moc_formsettings_basic.o:(.data.rel.ro._ZTV18FormSettings_Basic[_ZTV18FormSettings_Basic]+0x28): undefined reference to FormSettings_Basic::~FormSettings_Basic()'

<think>好的，我现在需要帮助用户解决C++ Qt编译时出现的未定义引用到析构函数FormSettings_Basic::~FormSettings_Basic()的问题。根据用户提供的引用，特别是引用[1]和引用[2]，这些错误通常与编译器和库的版本不...

void MainWindow::on_pushButton_1_clicked() { ui->lineEdit->setText(ui->lineEdit->text()+"1"); }解释一下

该函数的主要作用是将 QLineEdit 对象（ui->lineEdit）中原有的文本和字符 "1" 进行拼接，然后将结果显示在 QLineEdit 控件中。这样，每次用户点击按钮时，都会在 QLineEdit 控件中追加一个字符 "1"。

<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>MainWindow</class> <widget class="QMainWindow" name="MainWindow"> <rect> <x>0</x> <y>0</y> <width>803</width> <height>600</height> </rect> <string>天气情况分析</string> <widget class="QWidget" name="centralwidget"> <widget class="QTabWidget" name="tabWidget"> <rect> <x>0</x> <y>0</y> <width>801</width> <height>551</height> </rect> <string notr="true">background-color: qlineargradient(spread:pad, x1:0.484346, y1:1, x2:0.479, y2:0, stop:0 rgba(158, 214, 255, 255), stop:1 rgba(255, 255, 255, 255));</string> <number>0</number> <widget class="QWidget" name="tab"> <attribute name="title"> <string>数据预处理</string> </attribute> <layout class="QVBoxLayout" name="verticalLayout_3"> <item> <widget class="QGroupBox" name="groupBox"> <string>选择与清洗</string> <layout class="QVBoxLayout" name="verticalLayout"> <item> <widget class="QPushButton" name="pushButton"> <string>选择csv文件</string> </widget> </item> <item> <widget class="QComboBox" name="comboBox"> <item> <string>数值型列：使用KNNImputer填充缺失值</string> </item> <item> <string>非数值型列：使用该列的众数填充空值</string> </item> <item> <string>基于全部列删除重复项：使用drop_duplicates()方法删除所有重复的行</string> </item> <item> <string>异常值处理：使用IQR（四分位距）方法移除数据集数值型列中的异常值</string> </item> <item> <string>数据格式化和类型转换：对数值型列进行Min-Max归一化</string> </item> <item> <string>数据排序：根据索引排序</string> </item> <item> <string>数据存储：使用to_csv()方法将清洗后的数据存储到一个cleaned.csv文件中</string> </item> </widget> </item> </layout> </widget> </item> <item> <widget class="QTableView" name="tableView"/> </item> </layout> </widget> <widget class="QWidget" name="tab_2"> <attribute name="title"> <string>可视化</string> </attribute> <layout class="QHBoxLayout" name="horizontalLayout"> <item> <widget class="QGroupBox" name="groupBox_2"> <string>可视化选项</string> <layout class="QVBoxLayout" name="verticalLayout_2"> <item> <widget class="QPushButton" name="pushButton_2"> <string>温度、气压、湿度随时间变化的折线图</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_3"> <string>不同站点PM2.5的柱状图</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_4"> <string>累积降水量·的面积图</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_5"> <string>各站点颗粒物浓度的散点图</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_6"> <string>气象玫瑰图</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_7"> <string>气象和污染物指标的雷达图</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_8"> <string>箱线图展示数据分布</string> </widget> </item> </layout> </widget> </item> <item> <widget class="QGraphicsView" name="graphicsView"/> </item> </layout> </widget> <widget class="QWidget" name="tab_3"> <attribute name="title"> <string>算法建模</string> </attribute> <layout class="QHBoxLayout" name="horizontalLayout_2"> <item> <widget class="QGroupBox" name="groupBox_3"> <string>算法选项</string> <layout class="QVBoxLayout" name="verticalLayout_4"> <item> <widget class="QPushButton" name="pushButton_9"> <string>线性回归</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_10"> <string>移动平均</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_11"> <string>时间序列分解</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton_12"> <string>经典时间序列预测模型</string> </widget> </item> </layout> </widget> </item> <item> <widget class="QGraphicsView" name="graphicsView_2"/> </item> </layout> </widget> </widget> </widget> <widget class="QMenuBar" name="menubar"> <rect> <x>0</x> <y>0</y> <width>803</width> <height>33</height> </rect> </widget> <widget class="QStatusBar" name="statusbar"/> </widget> <resources/> <connections/> </ui> 如果我要用网页实现上述ui文件的功能，怎么写python代码，已知要处理的cav文件有五万多行数据

.then(response => response.json()) .then(data => { Plotly.newPlot('chart', [{ x: data.map(d => d.date), y: data.map(d => d.value), type: 'scatter' }]); }); ### 算法建模与部署对于机器...

解释这段代码void MainWindow::on_pushButton_2_clicked() { int DBnum = ui->spinBox_dizhi->text().toInt();//DB编号 int byteStart = ui->lineEdit_qishi->text().toInt();//起始字节 int byteNum = ui->spinBox_zhijie->text().toInt();//字节长度 qDebug() <<DBnum; qDebug() <<byteStart; qDebug() <<byteNum; qint32 buff = ui->lineEdit_zhi->text().toInt(); qDebug() << "write:" << buff; client->DBWrite( DBnum , byteStart , byteNum, &buff); }

2. int byteStart = ui->lineEdit_qishi->text().toInt(); 从名为 lineEdit_qishi 的控件获取文本内容，并将其转换为整数类型，然后存储在变量 byteStart 中。这里假设 lineEdit_qishi 是一个用于输入起始...

#include "AutoCuttingWidget.h" #include "AutoCuttingAlarmTable.h" #include "Component/LightLabel/lightLabel.h" #include "Component/QFlightInstruments/LayoutSquare.hpp" #include "Component/LineRuler/LineRuler.h" #include "Component/LineRuler/RulerWidget.h" #include "AutoCuttingActionDBManager.h" #include "CircuitBaseScene.h" #include "GraphicElementManage.h" #include <QDebug> #include <SystemSetting.h> AutoCuttingWidget::AutoCuttingWidget(QWidget* parent) : QWidget(parent) , ui(new Ui::AutoCuttingWidgetClass()) { ui->setupUi(this); initLineRuler(); initAmpHistoryLineCharts(); initAlarmMessageTable(); initRemotePanel(); initPFDParameter(); initRemoteConnectParam(); initCutMonitor(); initDrawCutPathViewer(); m_autoCutXmlFilePath = QCoreApplication::applicationDirPath() + "/autoCutXML/"; } AutoCuttingWidget::~AutoCuttingWidget() { if (m_updateCutMonitorTimer) { m_updateCutMonitorTimer->stop(); //delete m_updateCutMonitorTimer; m_updateCutMonitorTimer = nullptr; } delete ui; } void AutoCuttingWidget::on_pushButton_drawPath_clicked() { ui->stackedWidget_autocut->setCurrentWidget(ui->page_cutPath); m_curView->enbaleDrawLine(true); } void AutoCuttingWidget::on_pushButton_clearCutPath_clicked() { QList<QGraphicsItem> itemList = m_curView->items(); for (QGraphicsItem item : itemList) { m_curView->scene()->removeItem(item); } } void AutoCuttingWidget::on_pushButton_startAuto_clicked() { m_updateCutMonitorTimer->stop(); resetAutoCuttingDataList(); m_updateCutMonitorTimer->start(hxcommon::SystemSetting::autoCutRefreshInterval); ui->stackedWidget_autocut->setCurrentWidget(ui->page_cutMonitor); } void AutoCuttingWidget::on_pushButton_stopAuto_clicked() { m_updateCutMonitorTimer->stop(); } void AutoCuttingWidget::on_pushButton_systemVoltage_clicked() { qDebug() << "on_pushButton_systemVoltage_clicked"; ui->stackedWidget->setCurrentIndex(0); } void AutoCuttingWidget::on_pushButton_pumpCurrent_clicked() { qDebug() << "on_pushButton_pumpCurrent_clicked"; ui->stackedWidget->setCurrentIndex(1); } void AutoCuttingWidget::on_pushButton_cutLowCurrent_clicked() { qDebug() << "on_pushButton_cutLowCurrent_clicked"; ui->stackedWidget->setCurrentIndex(2); } void AutoCuttingWidget::on_pushButton_cutHighCurrent_clicked() { qDebug() << "on_pushButton_cutHighCurrent_clicked"; ui->stackedWidget->setCurrentIndex(3); } void AutoCuttingWidget::on_pushButton_memoryStart_clicked() { QDateTime time = QDateTime::currentDateTime(); QString dateTime = time.toString("MM-dd-hh-mm"); QString pathname = m_autoCutXmlFilePath + QStringLiteral("自动截割路径_%1.xml").arg(dateTime); m_autoCutFileSavePath = QFileDialog::getSaveFileName(this, QStringLiteral("保存自动截割路径"), pathname, "Xml(.xml)"); } void AutoCuttingWidget::on_pushButton_memoryStop_clicked() { QString savePath = m_autoCutFileSavePath; if (savePath.isEmpty()) { QDateTime time = QDateTime::currentDateTime(); QString dateTime = time.toString("MM-dd-hh-mm"); savePath = m_autoCutXmlFilePath + QStringLiteral("自动截割路径_%1.xml").arg(dateTime); } if (m_graphicElementManager.saveCurrentPage(savePath)) { emit showResponseMessage(hxcommon::NotifyType::Notify_Type_Success,QStringLiteral("自动截割路径保存成功!")); } else { emit showResponseMessage(hxcommon::NotifyType::Notify_Type_Error, QStringLiteral("保存失败!")); } } void AutoCuttingWidget::on_pushButton_memoryModel_clicked() { QString fileName = QFileDialog::getOpenFileName(this, QStringLiteral("请打开自动截割路径文件"), m_autoCutFileSavePath, "Xml(.xml)"); QFile file(fileName); if (!file.open(QIODevice::ReadOnly)) { qDebug() << "Open failed"; return; } m_graphicElementManager.openPage(file); } void AutoCuttingWidget::initAlarmMessageTable() { m_alarmMessageTable = new AutoCuttingAlarmTable(ui->widget_abnormalInfo); QLayout* alarmMessageTableLayout = ui->widget_abnormalInfo->layout(); if (alarmMessageTableLayout) { // 如果 layout 是 QVBoxLayout 类型，添加控件 QVBoxLayout* vboxLayout = qobject_cast<QVBoxLayout>(alarmMessageTableLayout); if (vboxLayout) { vboxLayout->addWidget(m_alarmMessageTable); } } } void AutoCuttingWidget::initRemotePanel() { // 创建 4x4 的网格布局 m_remotePanelLayout = new QGridLayout(ui->widget_remotePanel); ui->widget_remotePanel->setLayout(m_remotePanelLayout); // 定义 4x4 的内容 QStringList labels = { QStringLiteral("截割头伸"), QStringLiteral("铲板升"), QStringLiteral("一运正转"), QStringLiteral("左后退"), QStringLiteral("截割头缩"), QStringLiteral("铲板降"), QStringLiteral("一运反转"), QStringLiteral("右后退"), QStringLiteral("左前进"), QStringLiteral("后支撑升"), QStringLiteral("截割左"), QStringLiteral("星轮正转"), QStringLiteral("右前进"), QStringLiteral("后支撑降"), QStringLiteral("截割右"), QStringLiteral("星轮反转") }; // 创建并添加 lightLabel 到布局 int index = 0; for (int row = 0; row < 4; ++row) { for (int col = 0; col < 4; ++col) { lightLabel label = new lightLabel(ui->widget_remotePanel); label->setLabelText(labels[index++]); // 设置内容 label->setLightPointStep(0); m_remotePanelLayout->addWidget(label, row, col); // 添加到网格布局 } } } void AutoCuttingWidget::initPFDParameter() { LayoutSquare* m_layoutSq = new LayoutSquare(this); m_layoutSq->setContentsMargins(0, 0, 0, 0); m_layoutSq->addWidget(ui->framePFD); } void AutoCuttingWidget::initRemoteConnectParam() { //m_remoteConnectLayout = new QGridLayout(ui->widget_remoteConnectInfo); //ui->widget_remoteConnectInfo->setLayout(m_remoteConnectLayout); //QStringList labels = { // QStringLiteral("遥控在线"), QStringLiteral("油泵启动"), QStringLiteral("截割启动"), QStringLiteral("一运启动"), // QStringLiteral("二运启动"), QStringLiteral("皮带启动"), QStringLiteral("星轮启动"), QStringLiteral("人员误入") //}; //int index = 0; //for (int row = 0; row < 2; ++row) { // for (int col = 0; col < 4; ++col) { // lightLabel* label = new lightLabel(ui->widget_remoteConnectInfo); // label->setLabelText(labels[index++]); // 设置内容 // label->setLightPointStep(0); // m_remoteConnectLayout->addWidget(label, row, col); // 添加到网格布局 // } //} // 创建 4x4 的网格布局 //m_remoteConnectLayout = new QGridLayout(ui->widget_remoteConnectInfo); //ui->widget_remoteConnectInfo->setLayout(m_remoteConnectLayout); //// 定义 4x4 的内容 //QStringList labels = { // QStringLiteral("截割头伸"), QStringLiteral("铲板升"), QStringLiteral("一运正转"), QStringLiteral("左后退"), // QStringLiteral("截割头缩"), QStringLiteral("铲板降"), QStringLiteral("一运反转"), QStringLiteral("右后退"), // QStringLiteral("左前进"), QStringLiteral("后支撑升"), QStringLiteral("截割左"), QStringLiteral("星轮正转"), // QStringLiteral("右前进"), QStringLiteral("后支撑降"), QStringLiteral("截割右"), QStringLiteral("星轮反转") //}; //// 创建并添加 lightLabel 到布局 //int index = 0; //for (int row = 0; row < 4; ++row) { // for (int col = 0; col < 4; ++col) { // lightLabel* label = new lightLabel(ui->widget_remoteConnectInfo); // label->setLabelText(labels[index++]); // 设置内容 // label->setLightPointStep(0); // m_remoteConnectLayout->addWidget(label, row, col); // 添加到网格布局 // } //} } void AutoCuttingWidget::initLineRuler() { // 创建 RulerWidget 实例，方向为垂直 RulerWidget* verticalRuler = new RulerWidget(Qt::Vertical, this); // 检查 widget_verticalRuler 是否已有布局 QLayout* verticallayout = ui->widget_verticalRuler->layout(); if (!verticallayout) { // 如果没有布局，创建一个 QVBoxLayout verticallayout = new QVBoxLayout(ui->widget_verticalRuler); ui->widget_verticalRuler->setLayout(verticallayout); } // 设置布局的间隔和边距为 0 verticallayout->setSpacing(0); verticallayout->setContentsMargins(0, 0, 0, 0); // 将 RulerWidget 添加到布局中 verticallayout->addWidget(verticalRuler); // 创建 RulerWidget 实例，方向为垂直 RulerWidget* horizontalRuler = new RulerWidget(Qt::Horizontal, this); // 检查 widget_verticalRuler 是否已有布局 QLayout* horizontalLayout = ui->widget_horizontalRuler->layout(); if (!horizontalLayout) { // 如果没有布局，创建一个 QVBoxLayout horizontalLayout = new QVBoxLayout(ui->widget_horizontalRuler); ui->widget_verticalRuler->setLayout(horizontalLayout); } // 设置布局的间隔和边距为 0 horizontalLayout->setSpacing(0); horizontalLayout->setContentsMargins(0, 0, 0, 0); // 将 RulerWidget 添加到布局中 horizontalLayout->addWidget(horizontalRuler); } void AutoCuttingWidget::initAmpHistoryLineCharts() { m_lineChartSystemVoltage = new AmpHistoryLineChart(ui->page_systemVoltage); m_lineChartPumpAmp = new AmpHistoryLineChart(ui->page_pumpCurrent); m_lineChartLowCutAmp = new AmpHistoryLineChart(ui->page_cutLowCurrent); m_lineChartHighCutAmp = new AmpHistoryLineChart(ui->page_cutHighCurrent); // 获取 ui 中的布局，并确保布局充满空间 QLayout* layoutSystemVoltage = ui->page_systemVoltage->layout(); if (layoutSystemVoltage) { // 如果 layout 是 QVBoxLayout 类型，添加控件 QVBoxLayout* vboxLayoutSystemVoltage = qobject_cast<QVBoxLayout>(layoutSystemVoltage); if (vboxLayoutSystemVoltage) { vboxLayoutSystemVoltage->addWidget(m_lineChartSystemVoltage); } } QLayout layoutPump = ui->page_pumpCurrent->layout(); if (layoutPump) { QVBoxLayout* vboxLayoutPump = qobject_cast<QVBoxLayout>(layoutPump); if (vboxLayoutPump) { vboxLayoutPump->addWidget(m_lineChartPumpAmp); } } QLayout layoutLowCut = ui->page_cutLowCurrent->layout(); if (layoutLowCut) { QVBoxLayout* vboxLayoutLowCut = qobject_cast<QVBoxLayout>(layoutLowCut); if (vboxLayoutLowCut) { vboxLayoutLowCut->addWidget(m_lineChartLowCutAmp); } } QLayout layoutHighCut = ui->page_cutHighCurrent->layout(); if (layoutHighCut) { QVBoxLayout* vboxLayoutHighCut = qobject_cast<QVBoxLayout>(layoutHighCut); if (vboxLayoutHighCut) { vboxLayoutHighCut->addWidget(m_lineChartHighCutAmp); } } m_lineChartPumpAmp->setYAxisRange(0, 100); m_lineChartLowCutAmp->setYAxisRange(0, 100); m_lineChartHighCutAmp->setYAxisRange(0, 100); // TODO:假设数据点，替换为实时数据 QList<QPointF> list; QDateTime currentTime = QDateTime::currentDateTime(); for (int i = 0; i < 120; ++i) { // 120个数据点，代表最近两个小时 list.append(QPointF(currentTime.addSecs(-i 60).toMSecsSinceEpoch(), QRandomGenerator::global()->bounded(10, 14))); } m_lineChartPumpAmp->setLineData(list); m_lineChartLowCutAmp->setLineData(list); m_lineChartHighCutAmp->setLineData(list); } void AutoCuttingWidget::initCutMonitor() { m_autoCuttingProcessor = new AutoCuttingProcessor(this); hxDataBaseManager::AutoCuttingActionDBManager dbManager; QList<hxcommon::AutoCuttingAction> list = dbManager.getActionList(); m_autoCuttingProcessor->setActionList(list); m_autoCuttingProcessor->doWork(); m_updateCutMonitorTimer = new QTimer(); connect(m_updateCutMonitorTimer, &QTimer::timeout, this, &AutoCuttingWidget::testDrawCutterMonitor); m_cutter = new QGraphicsPixmapItem(QPixmap(":/mainwindow/Resource/AutoCutting/cutter.png").scaled(60, 60, Qt::KeepAspectRatio)); } void AutoCuttingWidget::resetAutoCuttingDataList() { if (m_updateCutMonitorTimer) { m_updateCutMonitorTimer->stop();//先停止可能正在进行的 } // 重置GraphicsScene int width = ui->widget_cutterMonitorPainter->width(); int height = ui->widget_cutterMonitorPainter->height(); int rowPointCount = hxcommon::SystemSetting::autoCutRowTakeTime / hxcommon::SystemSetting::autoCutRefreshInterval;//一行多少点 int columnPointCount = hxcommon::SystemSetting::autoCutColumnTakeTime / hxcommon::SystemSetting::autoCutRefreshInterval;//一列多少点 int columnSplitPointCount = columnPointCount / hxcommon::SystemSetting::autoCutColumnSplit;//向上的每段多少点 double wItem = 540.0 / rowPointCount;//SceneRect尺寸600 - 截割头60 double hItem = 360.0 / columnPointCount;//SceneRect尺寸420 - 截割头60 ui->graphicsViewCutterMonitor->setGeometry(width / 2 - 310, height / 2 - 220, 620, 440);//居中，因为带20边框 QGraphicsScene scene = ui->graphicsViewCutterMonitor->scene(); if (!scene) { scene = new QGraphicsScene(this); ui->graphicsViewCutterMonitor->setScene(scene); } scene->setSceneRect(0, 0, 600, 420); // 禁用滚动条 ui->graphicsViewCutterMonitor->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); ui->graphicsViewCutterMonitor->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 禁用鼠标拖拽滚动 ui->graphicsViewCutterMonitor->setDragMode(QGraphicsView::NoDrag); // 禁用鼠标滚轮滚动 ui->graphicsViewCutterMonitor->setTransformationAnchor(QGraphicsView::NoAnchor); // 禁用索引提高性能 scene->setItemIndexMethod(QGraphicsScene::NoIndex); //清空画布 scene->clear(); //清空指令列表 m_autoCuttingDataList.clear(); //不管分多少段，最底下从左到右都是一样的 for (int x = 0; x < rowPointCount; x++) { int y = QRandomGenerator::global()->bounded(columnPointCount - 2, columnPointCount); //int y = columnPointCount - 1; AutoCuttingPoint point(x, y, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128, 128 - hxcommon::SystemSetting::autoCutHorizontalSpeed); m_autoCuttingDataList.append(point);//从左到右 } for (int i = 0; i < hxcommon::SystemSetting::autoCutColumnSplit; i++) { if (i % 2 == 0) { //顺着右侧向上 int yStart = columnPointCount - columnSplitPointCount * i - 1; int yEnd = columnPointCount - columnSplitPointCount * (i + 1); for (int y = yStart; y >= yEnd; y--) { int x = QRandomGenerator::global()->bounded(rowPointCount - 2, rowPointCount); //int x = rowPointCount - 1; AutoCuttingPoint point(x, y, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128 - hxcommon::SystemSetting::autoCutHorizontalSpeed, 128); m_autoCuttingDataList.append(point);//右边向上 } for (int x = rowPointCount - 1; x >= 0; x--) { int y = QRandomGenerator::global()->bounded(yEnd - 2, yEnd); //int y = yEnd - 1; AutoCuttingPoint point(x, y, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128, 128 + hxcommon::SystemSetting::autoCutHorizontalSpeed); m_autoCuttingDataList.append(point);//从右到左 } } else { //顺着左侧向上 int yStart = columnPointCount - columnSplitPointCount * i - 1; int yEnd = columnPointCount - columnSplitPointCount * (i + 1); for (int y = yStart; y >= yEnd; y--) { int x = QRandomGenerator::global()->bounded(-1, 1); //int x = 0; AutoCuttingPoint point(x, y, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128 - hxcommon::SystemSetting::autoCutHorizontalSpeed, 128); m_autoCuttingDataList.append(point);//左边向上 } for (int x = 0; x < rowPointCount; x++) { int y = QRandomGenerator::global()->bounded(yEnd - 2, yEnd); //int y = yEnd - 1; AutoCuttingPoint point(x, y, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128, 128 - hxcommon::SystemSetting::autoCutHorizontalSpeed); m_autoCuttingDataList.append(point);//从左到右 } } } //结束时添加停止命令 if (hxcommon::SystemSetting::autoCutColumnSplit % 2 == 0) { AutoCuttingPoint point1(rowPointCount - 1, 0, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128, 128); m_autoCuttingDataList.append(point1); AutoCuttingPoint point2(rowPointCount - 1, 0, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128, 128); m_autoCuttingDataList.append(point2); } else { AutoCuttingPoint point1(0, 0, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128, 128); m_autoCuttingDataList.append(point1); AutoCuttingPoint point2(0, 0, hxcommon::HeadingCutterCmdEnum::JoystickArm, 128, 128); m_autoCuttingDataList.append(point2); } } void AutoCuttingWidget::initDrawCutPathViewer() { // 创建管理器 hxdraw2dlib::GraphicElementManage manager; // 创建场景 hxdraw2dlib::CircuitBaseScene* pScene = new hxdraw2dlib::CircuitBaseScene(this); //pScene->setSceneRect(-297 * 3 / 2, -210 * 3 / 2, 297 * 3, 210 * 3); pScene->setScalePerGrid(10.0); QTimer::singleShot(0, this, [=]() { QSize widgetSize = ui->widget_drawCutPathView->size(); pScene->setSceneRect(0, 0, widgetSize.width(), widgetSize.height()); }); // 创建视图（不要设置 parent） hxdraw2dlib::CircuitBaseView* view = new hxdraw2dlib::CircuitBaseView(pScene); m_curView = view; view->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); // 获取或创建布局 QLayout* layout = ui->widget_drawCutPathView->layout(); if (layout) { // 如果 layout 是 QVBoxLayout 类型，添加控件 QVBoxLayout* vboxLayout = qobject_cast<QVBoxLayout>(layout); vboxLayout->setContentsMargins(0, 0, 0, 0); // 去除边距 vboxLayout->setSpacing(0); // 去除间隔 if (vboxLayout) { //QTimer::singleShot(0, this, [=]() { //vboxLayout->addWidget(m_curView); //}); } } m_graphicElementManager.setCurView(m_curView); } void AutoCuttingWidget::testDrawCutterMonitor() { //获取本次要绘制的点 if (m_autoCuttingDataList.size() == 0) { return; } AutoCuttingPoint point = m_autoCuttingDataList.takeFirst(); emit sendAutoCuttingCmd(point.cmd, point.b0, point.b1); m_cutterRotation -= 13; if (m_cutterRotation <= -360) { m_cutterRotation = 0; } int width = ui->widget_cutterMonitorPainter->width(); int height = ui->widget_cutterMonitorPainter->height(); int rowPointCount = hxcommon::SystemSetting::autoCutRowTakeTime / hxcommon::SystemSetting::autoCutRefreshInterval;//一行多少点 int columnPointCount = hxcommon::SystemSetting::autoCutColumnTakeTime / hxcommon::SystemSetting::autoCutRefreshInterval;//一列多少点 double wItem = 540.0 / rowPointCount;//SceneRect尺寸600 - 截割头60 double hItem = 360.0 / columnPointCount;//SceneRect尺寸420 - 截割头60 //qDebug() << "width" << width << "height" << height; ui->graphicsViewCutterMonitor->setGeometry(width / 2 - 310, height / 2 - 220, 620, 440);//居中，因为带20边框 QGraphicsScene scene = ui->graphicsViewCutterMonitor->scene(); if (!scene) { scene = new QGraphicsScene(this); ui->graphicsViewCutterMonitor->setScene(scene); } scene->setSceneRect(0, 0, 600, 420); // 禁用滚动条 ui->graphicsViewCutterMonitor->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); ui->graphicsViewCutterMonitor->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 禁用鼠标拖拽滚动 ui->graphicsViewCutterMonitor->setDragMode(QGraphicsView::NoDrag); // 禁用鼠标滚轮滚动 ui->graphicsViewCutterMonitor->setTransformationAnchor(QGraphicsView::NoAnchor); // 禁用索引提高性能 scene->setItemIndexMethod(QGraphicsScene::NoIndex); // 先移除画上去的截割头 scene->removeItem(m_cutter); //画很粗的圆组成切割图形 QGraphicsEllipseItem* circle = new QGraphicsEllipseItem(); circle->setRect(0, 0, 60, 60); // x, y, width, height (width=height时为圆形) circle->setPos(point.x * wItem, point.y * hItem); // 设置位置 circle->setBrush(QColor(26, 155, 114)); // 设置填充颜色 circle->setPen(QPen(QColor(26, 155, 114), 1)); // 设置边框 scene->addItem(circle);//添加到场景 //画小点连成轨迹 QGraphicsEllipseItem* linePoint = new QGraphicsEllipseItem(); linePoint->setRect(0, 0, 1, 1); // x, y, width, height (width=height时为圆形) linePoint->setPos(point.x * wItem + 30, point.y * hItem + 30); // 设置位置 linePoint->setBrush(Qt::green); // 设置填充颜色 linePoint->setPen(QPen(Qt::green, 1)); // 设置边框 scene->addItem(linePoint);//添加到场景 //画截割头和截割头旋转 scene->addItem(m_cutter); m_cutter->setPos(point.x * wItem, point.y * hItem); m_cutter->setTransformOriginPoint(QPointF(30, 30)); m_cutter->setRotation(m_cutterRotation); //联动左边姿态 float pitch = (columnPointCount / 2 - point.y) / columnPointCount * 80.0; float heading = (point.x - rowPointCount / 2) / rowPointCount * 80.0; ui->graphicsPFD->setPitch(pitch); ui->graphicsPFD->setHeading(heading); ui->graphicsPFD->update(); // ui->label_cutX->setText(QString::number(point.x)); ui->label_cutY->setText(QString::number(point.y)); }

- 响应按钮点击事件，例如：on_pushButton_drawPath_clicked（切换到绘制路径页面）、on_pushButton_clearCutPath_clicked（清除路径）、on_pushButton_startAuto_clicked（开始自动截割）、on_pushButton_...

#include <QWidget> #include <QApplication> void Form::on_pushButton_clicked() { auto windows = qApp->allWindows(); for (auto window : windows) { auto qwidget = dynamic_cast<QWidget*>(window); if (qwidget && qwidget->winId()) { qDebug() << "Window Title: " << qwidget->windowTitle(); } } }为啥没有输出

void Form::on_pushButton_clicked() { auto windows = qApp->allWindows(); qDebug() << "Number of Windows: " << windows.count(); for (auto window : windows) { auto qwidget = dynamic_cast<QWidget*>...

<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <widget name="__qt_fake_top_level"> <widget class="QWidget" name=""> <layout class="QVBoxLayout" name="verticalLayout"> <item> <widget class="QTextEdit" name="textEdit"> <size> <width>200</width> <height>0</height> </size> <size> <width>200</width> <height>16777215</height> </size> 14 </widget> </item> <item> <widget class="QTextBrowser" name="textBrowserResult"> <size> <width>100</width> <height>0</height> </size> <size> <width>200</width> <height>16777215</height> </size> 28 </widget> </item> <item> <widget class="QPushButton" name="pushButton_2"> <string>暂停</string> </widget> </item> <item> <widget class="QPushButton" name="pushButton"> <string>开始</string> </widget> </item> <item> <widget class="QComboBox" name="comboBox"> <sizepolicy hsizetype="Expanding" vsizetype="Maximum"> <horstretch>0</horstretch> <verstretch>0</verstretch> </sizepolicy> <size> <width>200</width> <height>30</height> </size> <size> <width>100</width> <height>30</height> </size> 14 </widget> </item> </layout> </widget> </widget> <resources/> </ui>

这是一个使用 Qt 设计界面的代码，其中包含了一个名为 "__qt_fake_top_level" 的 widget，它包含了一个 QVBoxLayout 布局，下面有一个 QTextEdit、一个 QTextBrowser、两个 QPushButton 和一个 QComboBox。这段代码...

#ifndef B5QUESTIONEXPLAIN_H #define B5QUESTIONEXPLAIN_H #include <QWidget> #include <QCheckBox> #include <QGroupBox> #include <QDebug> namespace Ui { class B5QuestionExplain; } class B5QuestionExplain : public QWidget { Q_OBJECT public: explicit B5QuestionExplain(QWidget parent = nullptr); ~B5QuestionExplain(); private: Ui::B5QuestionExplain ui; int a; // QList<QGroupBox > listGroup; // QList<QCheckBox > listCheckBox; //private slots: // void on_pushButton_clicked();//新增需要说明的问题 }; #endif // B5QUESTIONEXPLAIN_H

根据您提供的代码，问题可能出现在您的析构函数中。由于您的类中存在一个int类型的成员变量a，那么在析构函数中需要将其释放。具体做法如下： c++ B5QuestionExplain::~B5QuestionExplain() { delete ui; // ...

智能电表项目全套资料#include "dianbiao2.h" #include "ui_dianbiao2.h" dianbiao2::dianbiao2(QWidget parent) : QWidget(parent) , ui(new Ui::dianbiao2) { ui->setupUi(this); socket=new QTcpSocket(); socket->connectToHost("192.168.7.56",6666); this->setWindowTitle("电表实况"); fan=new fsmpFan(this); temp=new fsmpTempHum(this); // //beeper=new fsmpBeeper(); ele=new fsmpElectric(this); time=new QTimer(this); time1=new QTimer(this); time2=new QTimer(this); time3=new QTimer(this); connect(time1,&QTimer::timeout,this,&dianbiao2::time1Handler); connect(time2,&QTimer::timeout,this,&dianbiao2::time2Handler); connect(time3,&QTimer::timeout,this,&dianbiao2::time3Handler); setSocket(socket); } struct Info{ int type; float money; float dj; float current; float total; }; dianbiao2::~dianbiao2() { delete ui; } void dianbiao2::setSocket(QTcpSocket s) { socket = s; connect(socket,&QTcpSocket::readyRead,this,&dianbiao2::recvData); } void dianbiao2::recvData() { QByteArray data=socket->readAll();//读取所有数据 ui->lcdNumber->display(QString(data)); } void dianbiao2::netConnected() { ui->label->setStyleSheet("background-color:green;border-radius:33px;"); //连接成功变绿 } void dianbiao2::netDisConnected() { ui->label->setStyleSheet("background-color:red;border-radius:33px;"); //断开连接变红 } void dianbiao2::enoughmoney() { float money=true; if(money>0){ ui->label_2->setStyleSheet("background-color:green;border-radius:33px;"); //钱够变绿 } } void dianbiao2::insuffmoney() { float money=true; if(money==0){ ui->label_2->setStyleSheet("background-color:red;border-radius:33px;"); //钱不够变红 } } void dianbiao2::temphum() { float temp=true; if(temp<50){ ui->label_3->setStyleSheet("background-color:green;border-radius:33px;"); //温度未超调 } } void dianbiao2::temphum2() { float temp=true; if(temp>50){ ui->label_3->setStyleSheet("background-color:red;border-radius:33px;"); //温度已超调 } } //风扇启动 void dianbiao2::fanstart() { float temp=true; if(temp){ fan->setSpeed(240); temp=false; fan->start(); } else{ temp=true; fan->stop(); } } void dianbiao2::checktemperature() { float temp =true; float threshold=30; if(temp>threshold) { fanstart(); ui->label_4->setStyleSheet("background-color:red;border-radius:33px;"); //温已未超调 } else{ fan->stop(); ui->label_4->setStyleSheet("background-color:green;border-radius:33px;"); //温度未超调 } } //电表实况三个连接 void dianbiao2::on_pushButton_clicked() { time1->start(1000); } void dianbiao2::on_lcdNumber_overflow() { } void dianbiao2::time1Handler() { /struct Info in; in.type=5; ui->lcdNumber->display((const char )&in);/ struct Info in; in.type = 5; socket->write((const char )&in); QByteArray data = socket->readAll(); ui->lcdNumber->display(QString(data)); } void dianbiao2::on_pushButton_2_clicked() { time2->start(1000); } void dianbiao2::on_lcdNumber_3_overflow() { } void dianbiao2::time2Handler() { // struct Info in; //in.type=5; //ui->lcdNumber_3->display(reinterpret_cast<const char >(&in)); struct Info in; in.type = 5; socket->write((const char )&in); QByteArray data = socket->readAll(); ui->lcdNumber_3->display(QString(data)); } void dianbiao2::on_pushButton_3_clicked() { time3->start(1000); } void dianbiao2::on_lcdNumber_2_overflow() { } void dianbiao2::time3Handler() { /struct Info in; in.type=6; ui->lcdNumber_2->display(reinterpret_cast<const char >(&in));/ struct Info in; in.type = 6; socket->write((const char )&in); QByteArray data = socket->readAll(); ui->lcdNumber_2->display(QString(data)); 请修改补充上述代码（完整版）帮我实现以下功能：用户端的三个lcd显示服务器返回的电价，电量，还能使用的剩余时间；以及如果连接成功label变色等功能

具体代码实现如下：</think>### C++ Qt 智能电表客户端开发实现方案 #### 1. TCP连接服务器实现 cpp // 头文件声明 #include <QTcpSocket> class SmartMeterClient : public QWidget { Q_OBJECT public: ...

#include "menu.h" #include "ui_menu.h" #include "pay.h" #include "QMessageBox" static int num; menu::menu(QWidget parent) : QMainWindow(parent), ui(new Ui::menu) { ui->setupUi(this); } menu::~menu() { delete ui; } void menu::on_pushButton_clicked() { // pay L = new pay(this); // L->show(); // this->hide(); } void menu::on_pushButton_3_clicked() { num++; QString score; score.setNum(num); ui->label_5->setText(score); } void menu::on_pushButton_2_clicked()//购物车 { QMessageBox box; box.setText("已点"+QString::number(ui->spinBox->value())+"份
"); box.setStandardButtons(QMessageBox::Ok); box.setModal(true); box.show(); box.setModal(false); box.exec(); }看看这段代码有什么问题

这段代码的问题在于购物车按钮的 on_pushButton_2_clicked() 函数中，使用了 QMessageBox 来显示已选数量，但是使用了 setModal(false) 来设置为非模态对话框，导致消息框显示后无法阻塞其他操作。建议将代码...

error: no 'void MainWindow::on_pushButton_clicked()' member function declared in class 'MainWindow' void MainWindow::on_pushButton_clicked() ^

这个错误是因为在MainWindow类中没有声明on_pushButton_clicked()成员函数。在你的MainWindow类中，你可能忘记了声明或者定义这个函数。要解决这个错误，你需要在MainWindow类的头文件或者源文件中添加对应的函数...

void MainWindow::on_pushButton_clicked() { Form *configWindow = new Form; configWindow->show(); }

这段代码是在Qt框架下实现的，当用户点击界面上的按钮时，会创建一个新的窗口对象configWindow，并显示出来。其中，Form是一个自定义的窗口类，可能包含一些用户输入的配置信息。在Qt框架中，通过创建QWidget或其...

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void MainWindow::on_pushButton_1_clicked() { ui->lineEdit->setText(ui->lineEdit->text()+"1"); }解释一下

error: no 'void MainWindow::on_pushButton_clicked()' member function declared in class 'MainWindow' void MainWindow::on_pushButton_clicked() ^

void MainWindow::on_pushButton_clicked() { Form *configWindow = new Form; configWindow->show(); }

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