目录
QT自定义QTableWidget
1.实现效果
2.具体实现：
(1)表格QTabelWidget
(2)表头QHeaderView
(3)插入数据

QT自定义QTableWidget

1.实现效果

2.具体实现：
(1)表格QTabelWidget
	QTabelWidget *table=new QTableWidget(11,6);	//设置行列个数
    table->setShowGrid(false);		//是否显示内部网格线条
    table->setFixedSize(1782,698);		//设置表格固定大小
    table->setAlternatingRowColors(1);	//是否显示交替颜色
    table->setEditTriggers(QAbstractItemView::NoEditTriggers);		//是否可编辑
    table->setSelectionMode(QAbstractItemView::NoSelection);	//是否可选中
    table->setProperty("table_31",true);		//设置分类
    for(int i=0; i<11; i++ ){				//设置行高，列宽
        table->setRowHeight(i,58);
    }
	for(int i=0; i<6; i++ ){
		table->setColumnWidth(i,200);
	}


qss样式表

QTableWidget[table_31="true"]{
    border: 1px solid  #8B8B8B;		/*表格外边框*/
	padding: 0px;		/*内边距*/
	margin: 0px;			/*外边距*/
	color: #575757;		/*表格文本的颜色*/
	background: white;	/*表格背景色*/
	alternate-background-color: lightgray;		/*表格交替色*/
	gridline-color:	#8B8B8B;		/*网格边框*/
	font-size: 24px;					/*表格文本大小*/
	border-radius: 20px;		/*表格边框弧度*/
	font-family: "Microsoft YaHei";		/*表格文本字体*/
}

QTableWidget::item[table_31="true"]{
    border-radius: 0px;				/*item 弧度*/
	background: transparent;	/*item 背景色*/
	border-style: none;			/*去除边框*/
    border-bottom: 1px solid  #8B8B8B;		/*底　边框*/
	border-right: 1px solid  red;		/*右　边框*/
	border-left: 1px solid  red;			/*左　边框*/
	border-top: 1px solid  #8B8B8B;		/*顶　边框*/
}
/*item 选中时*/
QTableWidget::item:selected[table_31="true"]{
    background:	transparent;
	color: black;
}
/*item 悬停*/
QTableWidget::item:hover[table_31="true"]{
    background:	transparent;
	color: black;
}
/*垂直表头和水平表头相交的单元格*/
QTableWidget[table_31="true"] QTableCornerButton::section{
   background: white;
   border: 1px solid  #8B8B8B;
}

(2)表头QHeaderView
	//水平表头
    table->horizontalHeader()->setVisible(true);		//设置表头是否可见
    table->horizontalHeader()->setStretchLastSection(true);	//自动调整对齐右边边界
    table->horizontalHeader()->setDefaultAlignment(Qt::AlignHCenter | Qt::AlignVCenter);		//表头文本对齐方式
    table->horizontalHeader()->setObjectName("hHeader");		//表头对象名
    //垂直表头
    table->verticalHeader()->setVisible(false);
    table->verticalHeader()->setStretchLastSection(true);		//自动调整对齐底部边界
    table->verticalHeader()->setDefaultAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
    table->verticalHeader()->setObjectName("vHeader");
    //设置表头文本
	QStringList header;
    header<<"A"<<"B"<<"C"<<"D"<<"E"<<"F";
    table->setHorizontalHeaderLabels(header);
    header.clear();
	header<<"A"<<"B"<<"C"<<"D"<<"E"<<"F"<<"G"<<"H"<<"I"<<"J"<<"K";
	table->setVerticalHeaderLabels(header);


qss样式表

/*水平表头*/
QHeaderView#hHeader{
	min-height: 50px;		/*表头最小高度*/
	background-color: transparent;
	border-top-left-radius: 10px;
	border-top-right-radius: 10px;
 	border-bottom-left-radius: 0px;
	border-bottom-right-radius: 0px;
}
/*表头section*/
QHeaderView::section#hHeader{
   	background-color: transparent;		
   	border: 1px solid  #8B8B8B;
   	border-radius: 0px;
   	font-size: 24px;
   	color:  #1B1B1B;
   /*border-style:none;*/
	border-bottom: 1px solid  #8B8B8B;
	border-right: 1px solid blue;
	border-left: 1px solid blue;
	border-top: 1px solid blue;
}
/*垂直表头*/
QHeaderView#vHeader{
   min-width: 50px;
   background: white;
}
QHeaderView::section#vHeader{
   background-color: white;
   border: 1px solid  #8B8B8B;
   border-radius: 0px;
   border-left-color: white;
   font-size: 24px;
   font-family: "Microsoft YaHei";
}

(3)插入数据
    for(int i=0; i<11; i++){
        for(int j=0; j<6; j++){
            QTableWidgetItem *tab_item=new QTableWidgetItem("Jan");
            tab_item->setTextAlignment(Qt::AlignCenter);
            table->setItem(i,j,tab_item);			//文本
            //table->setItem(0,1,new QTableWidgetItem(QIcon(":/Image/IED.png"), "Jan's month"));		//图片
            //table->setCellWidget(0,0,new QLabel("Love"));		//label
        }
    }

目录
添加功能
代码展示
switchbtn.py

添加功能
1、设置单元格文本居中

2、添加自定义按钮

3、设置指定行、列不可编辑
代码展示
from PyQt5 import QtWidgets, QtCore
from PyQt5.QtCore import pyqtSignal, Qt
from PyQt5.QtWidgets import QTableWidget, QTableWidgetItem, QItemDelegate

from switchbtn import SwitchBtn


class MyTableWidget(QTableWidget):
    switch_sig = pyqtSignal(list)

    def __init__(self, parent=None):
        super().__init__(parent)

    # 单元格文本居中(行，列，内容)
    def con_center(self, row, col, item_str):
        newItem = QTableWidgetItem(item_str)
        newItem.setTextAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
        self.setItem(row, col, newItem)

    # 添加状态按钮
    def add_switchbtn(self, row, col):
        check_btn = SwitchBtn()
        check_btn.checkedChanged.connect(self.checkChanged)
        self.setCellWidget(row, col, check_btn)

    # 发送状态按钮信号
    def checkChanged(self):
        check_box = self.sender()
        ix = self.indexAt(check_box.pos())
        row, col, is_checked = ix.row(), ix.column(), check_box.checked
        self.switch_sig.emit([row, col, is_checked])

    # 设置列不可编辑
    def col_enabled(self, col):
        self.setItemDelegateForColumn(col, EmptyDelegate(self))

    # 设置行不可编辑
    def row_enabled(self, row):
        self.setItemDelegateForRow(row, EmptyDelegate(self))


class EmptyDelegate(QItemDelegate):
    def __init__(self, parent):
        super().__init__(parent)

    def createEditor(self, QWidget, QStyleOptionViewItem, QModelIndex):
        return None


switchbtn.py
链接：switchbtn.py
from switchbtn import SwitchBtn # 点击跳转链接查看switchbtn.py

QT自带没有分页组件，加载表格大数据的时候有些不方便，因此打算全部用源码自定义一个表格+分页，这样方便以后移植。

具体思路如下：

  先实现一个分页组件
	
 然后用代码定义一个PageTable类，将分页组件与QTableWidget封装进去
	
使用封装好的PageTable
完整源码 

核心代码如下：

自定义Page组件 类
#include "PageWidget.h"
#include "ui_PageWidget.h"

#include <QtGlobal>
#include <QHBoxLayout>
#include <QMouseEvent>
#include <QKeyEvent>
#include <QDebug>

PageWidget::PageWidget(int blockSize, QWidget *parent) : QWidget(parent),
    ui(new Ui::PageWidget) {
    ui->setupUi(this);
    setBlockSize(blockSize);
    initialize();

    maxPage = 0;
    setMaxPage(1);
}

PageWidget::~PageWidget() {
    delete ui;
    delete pageLabels;
}

bool PageWidget::eventFilter(QObject *watched, QEvent *e) {
    if (e->type() == QEvent::MouseButtonRelease) {
        int page = -1;
        if (watched == ui->previousPageLabel) { page = getCurrentPage() - 1; }

        if (watched == ui->nextPageLabel) { page = getCurrentPage() + 1; }

        for (int i = 0; i < pageLabels->count(); ++i) {
            if (watched == pageLabels->at(i)) {
                page = pageLabels->at(i)->text().toInt();
                break;
            }
        }

        if (-1 != page) {
            setCurrentPage(page, true);
            return true;
        }
    }

    if (watched == ui->pageLineEdit && e->type() == QEvent::KeyRelease) {
        QKeyEvent *ke = static_cast<QKeyEvent *>(e);
        if (ke->key() == Qt::Key_Enter || ke->key() == Qt::Key_Return) {
            setCurrentPage(ui->pageLineEdit->text().toInt(), true);
            //setMaxPage(ui->pageLineEdit->text().toInt()); // 测试生成多个页码
            return true;
        }
    }

    return QWidget::eventFilter(watched, e);
}

int PageWidget::getBlockSize() const {
    return blockSize;
}

int PageWidget::getMaxPage() const {
    return maxPage;
}

int PageWidget::getCurrentPage() const {
    return currentPage;
}

void PageWidget::setMaxPage(int page) {
    page = qMax(page, 1);

    if (maxPage != page) {
        this->maxPage = page;
        this->currentPage = 1;
        updatePageLabels();
    }
}

void PageWidget::setCurrentPage(int page, bool signalEmitted) {
    page = qMax(page, 1);
    page = qMin(page, maxPage);

    if (page != this->currentPage) {
        this->currentPage = page;
        updatePageLabels();

        if (signalEmitted) {
            emit currentPageChanged(page);
        }
    }
}

void PageWidget::setBlockSize(int blockSize) {
    // 为了便于计算, block size 必须是奇数, 且最小为3
    blockSize = qMax(blockSize, 3);
    if (blockSize % 2 == 0) {
        ++blockSize;
    }
    this->blockSize = blockSize;
}

// 初始化页码的labels
// 分成三个部分, 左...中...右
void PageWidget::initialize() {
    ui->pageLineEdit->installEventFilter(this);
    ui->pageLineEdit->setValidator(new QIntValidator(1, 10000000, this));

    ui->nextPageLabel->setProperty("page", "true");
    ui->previousPageLabel->setProperty("page", "true");
    ui->nextPageLabel->installEventFilter(this);
    ui->previousPageLabel->installEventFilter(this);

    pageLabels = new QList<QLabel *>();

    QHBoxLayout *leftLayout = new QHBoxLayout();
    QHBoxLayout *centerLayout = new QHBoxLayout();
    QHBoxLayout *rightLayout = new QHBoxLayout();
    leftLayout->setContentsMargins(0, 0, 0, 0);
    leftLayout->setSpacing(0);
    centerLayout->setContentsMargins(0, 0, 0, 0);
    centerLayout->setSpacing(0);
    rightLayout->setContentsMargins(0, 0, 0, 0);
    rightLayout->setSpacing(0);

    for (int i = 0; i < blockSize * 3; ++i) {
        QLabel *label = new QLabel(QString::number(i + 1));
        label->setProperty("page", "true");
        label->installEventFilter(this);

        pageLabels->append(label);

        if (i < blockSize) {
            leftLayout->addWidget(label);
        } else if (i < blockSize * 2) {
            centerLayout->addWidget(label);
        } else {
            rightLayout->addWidget(label);
        }
    }

    ui->leftPagesWidget->setLayout(leftLayout);
    ui->centerPagesWidget->setLayout(centerLayout);
    ui->rightPagesWidget->setLayout(rightLayout);
}

void PageWidget::updatePageLabels() {
    ui->leftSeparateLabel->hide();
    ui->rightSeparateLabel->hide();

    if (maxPage <= blockSize * 3) {
        for (int i = 0; i < pageLabels->count(); i += 1) {
            QLabel *label = pageLabels->at(i);

            if (i < maxPage) {
                label->setText(QString::number(i + 1));
                label->show();
            } else {
                label->hide();
            }

            if (currentPage - 1 == i) {
                label->setProperty("currentPage", "true");
            } else {
                label->setProperty("currentPage", "false");
            }

            label->setStyleSheet("/**/");
        }
        return;
    }

    // 以下情况为maxPageNumber大于blockSize * 3, 所有的页码label都要显示
    // c 为 currentPage
    // n 为 block size
    // m 为 maxPage

    // 1. c ∈ [1, n + n/2 + 1]: 显示前 n * 2 个, 后 n 个: 只显示右边的分隔符
    // 2. c ∈ [m - n - n/2, m]: 显示前 n 个, 后 n * 2 个: 只显示左边的分隔符
    // 3. 显示[1, n], [c - n/2, c + n/2], [m - 2*n + 1, m]: 两个分隔符都显示

    int c = currentPage;
    int n = blockSize;
    int m = maxPage;
    int centerStartPage = 0;

    if (c >= 1 && c <= n + n / 2 + 1) {
        // 1. c ∈ [1, n + n/2 + 1]: 显示前 n * 2 个, 后 n 个: 只显示右边的分隔符
        centerStartPage = n + 1;
        ui->rightSeparateLabel->show();
    } else if (c >= m - n - n / 2 && c <= m) {
        // 2. c ∈ [m - n - n/2, m]: 显示前 n 个, 后 n * 2 个: 只显示左边的分隔符
        centerStartPage = m - n - n + 1;
        ui->leftSeparateLabel->show();
    } else {
        // 3. 显示[1, n], [c - n/2, c + n/2], [m - n + 1, m]: 两个分隔符都显示
        centerStartPage = c - n / 2;
        ui->rightSeparateLabel->show();
        ui->leftSeparateLabel->show();
    }

    for (int i = 0; i < n; ++i) {
        pageLabels->at(i)->setText(QString::number(i + 1));                     // 前面 n 个
        pageLabels->at(n + i)->setText(QString::number(centerStartPage + i));   // 中间 n 个
        pageLabels->at(3 * n - i - 1)->setText(QString::number(m - i));         // 后面 n 个
    }

    for (int i = 0; i < pageLabels->count(); ++i) {
        QLabel *label = pageLabels->at(i);
        int page = label->text().toInt();
        if (page == currentPage) {
            label->setProperty("currentPage", "true");
        } else {
            label->setProperty("currentPage", "false");
        }

        label->setStyleSheet("/**/");
        label->show();
    }
}


 封装后的PageTable类
#include "PageTable.h"
#include <QTableWidget>
#include <QDebug>
#include <QHeaderView>


PageTable::PageTable(QStringList &header,int rowCount)
{


    qDebug()<<" PageTable init ,rowCount:"<<rowCount << ",header size:"<<header.size();

    tableWidget = new QTableWidget(rowCount,header.size());//构造一个10行5列的表格
    tableWidget->setWindowTitle("Title");
    tableWidget->setHorizontalHeaderLabels(header);
    tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);//设置表格为单行选择
    tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);//设置只能选中行，不能单个选择单元格
    tableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);//设置单元格不可编辑
    tableWidget->verticalHeader()->setHidden(true);// 隐藏行号 (不显示前面行号)
    tableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);//让表格挤满占个父容器
//    for(int i = 1;i<header.size();i++)
//        tableWidget->horizontalHeader()->setSectionResizeMode(i,QHeaderView::Interactive);   //然后设置要根据内容使用宽度的列（其他没设置的列自动缩放）


//    for(int i = 0;i<rowCount;i++){
//        tableWidget->setItem(i,0, new QTableWidgetItem("context"));
//        tableWidget->item(i,0)->setTextAlignment(Qt::AlignLeft|Qt::AlignVCenter);
//        tableWidget->setRowHeight(i,25);
//    }

    //设置表头样式
    tableWidget->setStyleSheet("QHeaderView::section {"
                               "color: black;font:bold 14px \"微软雅黑\";"
                               "text-align:center;"
                               "height:25px;"
                               "background-color: #d1dff0;"
                               " border:1px solid #8faac9;"
                               "border-left:none;"
                               "}");

    QHBoxLayout *hLayout = new QHBoxLayout();//让PageWidget水平居中
    pageWidget = new PageWidget();
    //pageWidget->setMaxPage(20);
    hLayout->addWidget(pageWidget);

    // 分页组件的css,这个内容应该放到普通文件中然后加载
    QString qss = QString(".QLabel[page=\"true\"] { padding: 1px; }")
            + QString(".QLabel[currentPage=\"true\"] { color: rgb(190, 0, 0);}")
            + QString(".QLabel[page=\"true\"]:hover { color: white; border-radius: 4px; background-color: qlineargradient(spread:reflect, x1:0, y1:0, x2:0, y2:1, stop:0 rgba(53, 121, 238, 255), stop:1 rgba(0, 202, 237, 255));}");
    pageWidget->setStyleSheet(qss);


    this->addWidget(tableWidget);
    this->addLayout(hLayout);

    tableWidget->horizontalHeader()->size();//列

}

void PageTable::SetData(QList<QList<QString>> &DataList)
{
   for(int i = 0;i<DataList.size();i++){

        QList<QString> Item = DataList[i];
        for(int j = 0;j<Item.size();j++){
            this->tableWidget->setItem(i,j, new QTableWidgetItem(Item[j]));
        }
   }
}



PageTable::~PageTable()
{
    qDebug() << "~PageTable() invoke..." ;
}


  使用
	
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QTableWidget>
#include <QDebug>
#include "pageWidget/PageTable.h"




MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    qDebug() << "[Debug] MyObject::test ";

    QStringList header;
    header<<"T1"<<"T2"<<"T3"<<"T4"<<"T5"<<"T6"<<"T7";
    pageTable = new PageTable(header,5);
    ui->testLayout->addLayout(pageTable);

    connect(pageTable->pageWidget, SIGNAL(currentPageChanged(int)), this, SLOT(PageChange(int)));

}

QList<QList<QString>> DataList;//数据
int RowIndex = 0;

void MainWindow::LoadPage(int pageIndex){

    DataList.clear();//先清空，只缓存一页。如果有100万条，缓存到List不合适

    for(int i = 0;i< 10;i++){//10行
        QList<QString> Row;
        RowIndex += 1;
        Row.append(QString("Data_1_%1_%2").arg(RowIndex).arg(pageIndex));
        Row.append(QString("Data_2_%1_%2").arg(RowIndex).arg(pageIndex));
        Row.append(QString("Data_3_%1_%2").arg(RowIndex).arg(pageIndex));
        Row.append(QString("Data_4_%1_%2").arg(RowIndex).arg(pageIndex));
        Row.append(QString("Data_5_%1_%2").arg(RowIndex).arg(pageIndex));
        Row.append(QString("Data_6_%1_%2").arg(RowIndex).arg(pageIndex));
        Row.append(QString("Data_7_%1_%2").arg(RowIndex).arg(pageIndex));
        DataList.append(Row);
    }
    pageTable->SetData(DataList);
}

void MainWindow::BtnLoadDataClick(){

    qDebug() << "click ...."<<RowIndex;
    pageTable->pageWidget->setMaxPage(10);//假如有10页数据
    pageTable->pageWidget->setCurrentPage(1);
    RowIndex = 0;
    LoadPage(1);//加载第一页


}


void MainWindow::PageChange(int currentPage){

    qDebug()<<"pageChagne"<<currentPage;
    this->LoadPage(currentPage);
}




MainWindow::~MainWindow()
{
    delete ui;
}


	
效果如下：

	


	
 
	

QTableWidget单元格使用自定义的lineEdit控件导致不能选中
使用自定义委托解决
1.自定义委托
class LineEditDelegate : public QItemDelegate
{
  Q_OBJECT

public:
  LineEditDelegate(QObject *parent = 0);
  //重写以下方法

  //创建编辑器，当视图需要一个编辑器时会告知委托为被修改的项目提供一个编辑器部件，此时会调用此方法
  QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
    const QModelIndex &index) const;
  //为编辑器设置数据，将模型中的数据设置到编辑器中
  void setEditorData(QWidget *editor, const QModelIndex &index) const;
  //将数据写入到模型中，当用户编辑完成后把编辑器中的数据写入到模型中
  void setModelData(QWidget *editor, QAbstractItemModel *model,
    const QModelIndex &index) const;
  //更新编辑器几何布局
  void updateEditorGeometry(QWidget *editor,
    const QStyleOptionViewItem &option, const QModelIndex &index) const;
};
LineEditDelegate::LineEditDelegate(QObject *parent)
  : QItemDelegate(parent)
{
}

QWidget *LineEditDelegate::createEditor(QWidget *parent,
  const QStyleOptionViewItem &/* option */,
  const QModelIndex &/* index */) const
{
  LonLatLineEdit *editor = new LonLatLineEdit(parent);

  return editor;
}

void LineEditDelegate::setEditorData(QWidget *editor,
  const QModelIndex &index) const
{
  QString value = index.model()->data(index, Qt::EditRole).toString();
  LonLatLineEdit *widget = static_cast<LonLatLineEdit*>(editor);
  widget->setText(value);
}

void LineEditDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
  const QModelIndex &index) const
{
  LonLatLineEdit *widget = static_cast<LonLatLineEdit*>(editor);
  widget->trans();
  QString value = widget->text();
  model->setData(index, value, Qt::EditRole);
}

void LineEditDelegate::updateEditorGeometry(QWidget *editor,
  const QStyleOptionViewItem &option, const QModelIndex &/* index */) const
{
  editor->setGeometry(option.rect);
}

2.QTableWidget整行设置代理

ui.tableWidget_node->setItemDelegateForColumn(1,new LineEditDelegate);

设置数据
ui.tableWidget_node->setItem(row, 1, new QTableWidgetItem(temp));
获取数据
QString text = ui.tableWidget_node->item(row, 1)->text();

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