Qt 串口AD采样，采集串口电压值

#include "GridCtrl.h" GridCtrl::GridCtrl(QWidget *parent):QTableWidget(parent) { } GridCtrl::~GridCtrl() { } void GridCtrl::initTableWidget() { m_otableWidget=new QTableWidget (this); m_otableWidget->setGeometry(0,0,600,600); m_otableWidget->setColumnCount(1); //设置列数 m_otableWidget->setRowCount(100);//设置行数 m_otableWidget->horizontalHeader()->setDefaultSectionSize(150); m_otableWidget->horizontalHeader()->setSectionsClickable(false); //设置表头不可点击（默认点击后进行排序） //设置表头内容 QStringList header; header<<tr("AD"); m_otableWidget->setHorizontalHeaderLabels(header); //设置表头字体加粗 QFont font = m_otableWidget->horizontalHeader()->font(); font.setBold(true); m_otableWidget->horizontalHeader()->setFont(font); m_otableWidget->horizontalHeader()->setStretchLastSection(true); //设置充满表宽度 m_otableWidget->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents); m_otableWidget->verticalHeader()->setDefaultSectionSize(20); //设置行高 //m_otableWidget->setFrameShape(QFrame::NoFrame); //设置无边框 m_otableWidget->setShowGrid(true); //设置显示格子线 m_otableWidget->verticalHeader()->setVisible(false); //设置垂直头不可见 m_otableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection); //可多选（Ctrl、Shift、 Ctrl+A都能够） m_otableWidget->setSelectionBehavior(QAbstractItemView::SelectRows); //设置选择行为时每次选择一行 m_otableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers); //设置不可编辑 m_otableWidget->horizontalHeader()->resizeSection(0,150); //设置表头第一列的宽度为150 m_otableWidget->horizontalHeader()->setFixedHeight(25); //设置表头的高度 m_otableWidget->setStyleSheet("selection-background-color:lightblue;"); //设置选中背景色 m_otableWidget->horizontalHeader()->setStyleSheet("QHeaderView::section{background:skyblue;}"); //设置表头背景色 m_otableWidget->setStyleSheet("background-color:rgb(220,240,240);"); //设置背景色 //设置水平、垂直滚动栏样式 m_otableWidget->horizontalScrollBar()->setStyleSheet("QScrollBar{background:transparent; height:10px;}" "QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}" "QScrollBar::handle:hover{background:gray;}" "QScrollBar::sub-line{background:transparent;}" "QScrollBar::add-line{background:transparent;}"); m_otableWidget->verticalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width: 10px;}" "QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}" "QScrollBar::handle:hover{background:gray;}" "QScrollBar::sub-line{background:transparent;}" "QScrollBar::add-line{background:transparent;}"); QTime time = QTime::currentTime(); qsrand((uint)time.msec()); // 使用当前时间作为随机数种子 // for (int row = 0; row < 10; ++row) { // for (int col = 0; col < 4; ++col) { // int randomNumber = qrand() % 100; // 生成 0 到 99 之间的随机数 // QTableWidgetItem *item = new QTableWidgetItem(QString::number(randomNumber)); // 创建一个新的表格项 // //设置字体样式为黑色 // QColor color("black"); // item->setTextColor(color); // m_otableWidget->setItem(row, col, item); // 将表格项插入到表格中的指定位置 // } // } //去除虚线 m_otableWidget->setItemDelegate(new NoFocusDelegate); //点击表时不正确表头行光亮（获取焦点） m_otableWidget->horizontalHeader()->setHighlightSections(false); //InitProgressBar(); //InitCombox(); //InitButton(); //InitChectBox(); setTableLineBackgroundColor(m_otableWidget, QColor(qRgb(200,200,200)));//设置线条颜色 //单击表头触发的事件 //connect(horizontalHeader(), SIGNAL(sectionClicked(int)), this, SLOT(onHeaderClicked(int))); //双击选中表格获取行号 connect(m_otableWidget, SIGNAL(doubleClicked(QModelIndex)), this,SLOT(TableDoubleClicked_slots(QModelIndex)));//< 双击定位 //设置菜单 m_otableWidget->setContextMenuPolicy(Qt::CustomContextMenu); connect(m_otableWidget, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(ShowContextMenu(const QPoint &))); m_otableWidget->update(); } void GridCtrl::InitChectBox() { m_oCheckBox=new QCheckBox(this); m_oCheckBox->setObjectName(QString("CheckBox")); m_oCheckBox->setText("CheckBox"); QWidget *wgb = new QWidget(this); QHBoxLayout *verticalLayoutb = new QHBoxLayout(wgb); verticalLayoutb->setContentsMargins(3,1,10,1); verticalLayoutb->addWidget(m_oCheckBox); m_otableWidget->setCellWidget(0,3,wgb); } void GridCtrl::InitProgressBar() { m_oProgressBar=new QProgressBar(this); m_oProgressBar->setObjectName(QStringLiteral("Progress")); m_oProgressBar->setMaximumHeight(20); m_oProgressBar->setFormat(QStringLiteral("value:%1").arg(0)); m_oProgressBar->setValue(0); m_oProgressBar->setMaximum(100); m_oProgressBar->setMaximum(0); m_oProgressBar->setAlignment(Qt::AlignCenter); QFont font; font.setPointSize(8); m_oProgressBar->setFont(font); m_oProgressBar->setStyleSheet( "QProgressBar {border: 2px solid grey;" "border-radius: 5px;" "color:#ff6600;" "background-color: #E9E9E9;" "text-align: center;}" "QProgressBar::chunk {background-color: rgb(0,250,0) ;}" ); QWidget *wg = new QWidget(this); QHBoxLayout *verticalLayouts = new QHBoxLayout(wg); verticalLayouts->setObjectName(QString::fromUtf8("verticalLayouts")); verticalLayouts->setContentsMargins(5,0,5,0); verticalLayouts->setSpacing(0); verticalLayouts->addWidget(m_oProgressBar); m_otableWidget->setCellWidget(0,0,wg); //for (int row = 0; row < table_widget->rowCount(); ++row) //{ // table_widget->setCellWidget(row, 0, wg); // 将 Widget 添加到第0列的每一行 //} } void GridCtrl::InitCombox() { m_oComBox = new QComboBox(this); m_oComBox->setObjectName(QString("combox")); m_oComBox->setStyleSheet("QComboBox{border:1px solid #242424;" "border-radius:3px;" "padding:2px;" "background:none;" "border-color: rgb(255,255,255);" "background-color: rgb(225,235, 250);" "selection-background-color:#484848;" "selection-color:#DCDCDC;}"); m_oComBox->addItem(QStringLiteral("A")); m_oComBox->addItem(QStringLiteral("B")); m_oComBox->addItem(QStringLiteral("C")); m_oComBox->setCurrentText("A"); m_oComBox->setEditable(false); // 变为不可编辑状态 //m_oComBox->lineEdit()->setAlignment(Qt::AlignCenter); // 文字居中 //cbox->lineEdit()->setReadOnly(true); // 改为只读状态 connect(m_oComBox,SIGNAL(currentIndexChanged(const QString &)), this,SLOT(comboBoxCurrentIndexChanged(const QString &))); // 添加 下拉框 点击处理 QWidget *wg = new QWidget(this); QHBoxLayout *verticalLayoutc = new QHBoxLayout(wg); verticalLayoutc->setObjectName(QString::fromUtf8("verticalLayouts")); verticalLayoutc->setContentsMargins(0,0,0,0); verticalLayoutc->setSpacing(0); verticalLayoutc->addWidget(m_oComBox); m_otableWidget->setCellWidget(0,1,wg); /* for (int row = 0; row < table_widget->rowCount();