本文主要为大家分享一篇代码实现制作QT表格的请求方法，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧，希望能帮助到大家。

一、简介

QTableWidget是QT对话框设计中常用的显示数据表格的控件，QTableWidget单元格数据是QTableWidgetItem对象来实现的，整个表格都需要用逐个单元格对象QTableWidgetItem构建起来。

二、详解

1、代码

（1）table.h

1. #ifndef TABLE_H  #define TABLE_H  #include <QtGui>    class Table : public QTableWidget  {      Q_OBJECT  public:      Table(QWidget *parent = 0);      ~Table();      void setColumnValue(const int &columnSum, const QStringList &header);   //set header value      void setHeaderWidth(const int &index, const int &width);    //set header and column widhth for each index      void setHeaderHeight(const int &height);                    //set header height        void addRowValue(const int &height, const QStringList &value, const QIcon &fileIcon);      void setRowH(const int &index, const int &height);      void setItemFixed(bool flag);      bool getSelectedRow(QList<int> &rowList);        protected:      void contextMenuEvent(QContextMenuEvent *event);      QModelIndex moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers);      void keyPressEvent(QKeyEvent *event);    private:      void createActions();        private slots:      void slotItemEntered(QTableWidgetItem *item);      void slotActionRename();      void slotItemSelectionChanged();        private:      int tableWidth;      int tableHeight;      QList<int>rowHeghtList;      QList<int>rowWidthList;            QMenu *popMenu;      QAction *actionName;      QAction *actionSize;      QAction *actionType;      QAction *actionDate;      QAction *actionOpen;      QAction *actionDownload; <a style="color:transparent">来@源gao*daima.com搞@代#码网</a><strong>搞gaodaima代码</strong>     QAction *actionFlush;      QAction *actionDelete;      QAction *actionRename;      QAction *actionCreateFolder;      QTableWidgetItem *rightClickedItem;      QMap<QTableWidgetItem *, QString>fileMap;      bool dupFlag;  };    // custom item delegate class  class NoFocusDelegate : public QStyledItemDelegate  {  protected:      void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const;  };  #endif // TABLE_H

（2）table.cpp

1. #include "table.h"    Table::Table(QWidget *parent)      : QTableWidget(parent)      , rightClickedItem(NULL)      , dupFlag(false)  {      rowHeghtList.clear();      rowWidthList.clear();      fileMap.clear();      this->setMouseTracking(true);      //setWindowTitle(tr("table"));      horizontalHeader()->setDefaultSectionSize(100);      verticalHeader()->setDefaultSectionSize(30);    //设置默认行高      tableWidth = 100;      tableHeight = 30;      horizontalHeader()->setClickable(false);    //设置表头不可点击（默认点击后进行排序        QFont font = horizontalHeader()->font();    //设置表头字体加粗      font.setBold(true);      horizontalHeader()->setFont(font);      horizontalHeader()->setStretchLastSection(true);    //设置充满表宽度      horizontalHeader()->setMovable(false);              //表头左右互换      //verticalHeader()->setResizeMode(QHeaderView::ResizeToContents);        setFrameShape(QFrame::NoFrame);      //设置无边框      //setShowGrid(false);                //设置不显示格子线      verticalHeader()->setVisible(false); //设置垂直头不可见      setSelectionMode(QAbstractItemView::ExtendedSelection);  //可多选（Ctrl、Shift、  Ctrl+A都可以）      setSelectionBehavior(QAbstractItemView::SelectRows);  //设置选择行为时每次选择一行      setEditTriggers(QAbstractItemView::NoEditTriggers); //设置不可编辑        setStyleSheet("selection-background-color:lightblue;");  //设置选中背景色      //horizontalHeader()->setStyleSheet("QHeaderView::section{background:skyblue;}"); //设置表头背景色      //setStyleSheet("background: rgb(56,56,56);alternate-background-color:rgb(48,51,55);selection-background-color:qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 rgb(56,56,56),stop:1 rgb(76,76,76));"); //设置选中背景色      horizontalHeader()->setStyleSheet("QHeaderView::section{background-color: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 rgba(134, 245, 99, 255),stop:0.5 rgba(134, 148, 99, 255),stop:1 rgba(115, 87, 128, 255));color:rgb(25, 70, 100);padding-left: 1px;border: 1px solid #FFFF00;}"); //设置表头背景色      setAlternatingRowColors(true);        //setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);      //setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);      //设置水平、垂直滚动条样式      horizontalScrollBar()->setStyleSheet("QScrollBar{background:transparent; height:12px;}"                                           "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;}");        verticalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width:12px;}"                                         "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;}");        // set the item delegate to your table widget      setItemDelegate(new NoFocusDelegate());             //虚线边框去除      //setFocusPolicy(Qt::NoFocus);   //去除选中虚线框      horizontalHeader()->setHighlightSections(false);    //点击表时不对表头行光亮（获取焦点）        createActions();      setItemFixed(false);      connect(this, SIGNAL(itemEntered(QTableWidgetItem*)), this , SLOT(slotItemEntered(QTableWidgetItem*)));      connect(this, SIGNAL(itemSelectionChanged()), this , SLOT(slotItemSelectionChanged()));      //this->resize(600, 600);  }    Table::~Table()  {    }    void Table::setColumnValue(const int &columnSum, const QStringList &header)  {      setColumnCount(columnSum);                //设置列数      this->setHorizontalHeaderLabels(header);  //设置列的标签  }    void Table::setHeaderWidth(const int &index, const int &width)  {      horizontalHeader()->resizeSection(index,width);      if (rowWidthList.count() <= index + 1) {        rowWidthList.append(width);      }      else {        rowWidthList[index+1] = width;      }      tableWidth = 0;      for(int index = 0; index < rowWidthList.count(); index++)         tableWidth += rowWidthList.at(index);      resize(tableWidth, tableHeight);  }    void Table::setHeaderHeight(const int &height)  {      horizontalHeader()->setFixedHeight(height);        //设置表头的高度      if (rowHeghtList.isEmpty()) {        rowHeghtList.append(height);      }      else {        rowHeghtList[0] = height;      }      tableHeight = 0;      for(int index = 0; index < rowHeghtList.count(); index++)         tableHeight += rowHeghtList.at(index);      resize(tableWidth, tableHeight);  }    void Table::addRowValue(const int &height, const QStringList &value, const QIcon &fileIcon)  {      int row_count = rowCount();    //获取表单行数      insertRow(row_count);          //插入新行      setRowHeight(row_count, height);      for (int index = 0; index < columnCount(); index++) {          QTableWidgetItem *item = new QTableWidgetItem;          if (index == 0) {              item->setIcon(fileIcon);              item->setTextAlignment(Qt::AlignVCenter | Qt::AlignLeft);              fileMap.insert(item, value.at(index));          }          else {              item->setTextAlignment(Qt::AlignCenter);          }          item->setText(value.at(index));          setItem(row_count, index, item);      }      rowHeghtList.append(height);      tableHeight += height;       resize(tableWidth, tableHeight);  }      void NoFocusDelegate::paint(QPainter* painter, const QStyleOptionViewItem & option, const QModelIndex &index) const  {      QStyleOptionViewItem itemOption(option);      if (itemOption.state & QStyle::State_HasFocus)          itemOption.state = itemOption.state ^ QStyle::State_HasFocus;      QStyledItemDelegate::paint(painter, itemOption, index);  }    void Table::setRowH(const int &index, const int &height)  {    setRowHeight(index, height);    if (rowHeghtList.count() <= index + 1) {      rowHeghtList.append(height);    }    else {      rowHeghtList[index+1] = height;    }    tableHeight = 0;    for(int index = 0; index < rowHeghtList.count(); index++)       tableHeight += rowHeghtList.at(index);    resize(tableWidth, tableHeight);  }    void Table::createActions()  {    popMenu = new QMenu();    actionName = new QAction(this);    actionSize = new QAction(this);    actionType = new QAction(this);    actionDate = new QAction(this);    actionOpen = new QAction(this);       actionDownload = new QAction(this);    actionFlush = new QAction(this);    actionDelete = new QAction(this);    actionRename = new QAction(this);    actionCreateFolder = new QAction(this);         actionOpen->setText(tr("打开"));    actionDownload->setText(tr("下载"));    actionFlush->setText(tr("刷新"));    actionDelete->setText(tr("删除"));    actionRename->setText(tr("重命名"));    actionCreateFolder->setText(tr("新建文件夹"));    actionName->setText(tr("名称"));    actionSize->setText(tr("大小"));    actionType->setText(tr("项目类型"));    actionDate->setText(tr("修改日期"));           actionFlush->setShortcut(QKeySequence::Refresh);    connect(actionRename, SIGNAL(triggered()), this, SLOT(slotActionRename()));  }    void Table::contextMenuEvent(QContextMenuEvent *event)  {    popMenu->clear();    QPoint point = event->pos();    rightClickedItem = this->itemAt(point);    if(rightClickedItem != NULL) {      popMenu->addAction(actionDownload);      popMenu->addAction(actionFlush);      popMenu->addSeparator();      popMenu->addAction(actionDelete);      popMenu->addAction(actionRename);      popMenu->addSeparator();      popMenu->addAction(actionCreateFolder);      QMenu *sortStyle = popMenu->addMenu(tr("排序"));      sortStyle->addAction(actionName);      sortStyle->addAction(actionSize);      sortStyle->addAction(actionType);      sortStyle->addAction(actionDate);                popMenu->exec(QCursor::pos());      event->accept();    }  }    QModelIndex Table::moveCursor(QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers)  {      //重写移动光标事件，当存在编辑项的时候，让光标永远位于当前项（编辑项）,否则返回父类      if(rightClickedItem && rightClickedItem->row() >= 0) {          return currentIndex();      }      else {         return QTableWidget::moveCursor(cursorAction, modifiers);      }  }      void Table::keyPressEvent(QKeyEvent *event)  {      if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) {          QTableWidgetItem *item = currentItem();          if (item) {              closePersistentEditor(item);              openPersistentEditor(item);              slotItemSelectionChanged();              dupFlag = false;          }      }  }    void Table::slotItemSelectionChanged()  {      //关闭编辑项      if (rightClickedItem && dupFlag == false) {          int editRow = rightClickedItem->row();          QTableWidgetItem *item = this->item(editRow, 0);          QMap<QTableWidgetItem *, QString>::iterator it;          for (it = fileMap.begin(); it != fileMap.end(); ++it) {              if (it.key() != item) {                  if (it.value() == item->text()) {                      dupFlag = true;                  }              }          }          if (dupFlag == false) {              this->closePersistentEditor(item);              rightClickedItem = NULL;          }          else {              QMessageBox::critical(this,tr("错误提示"),tr("文件重名"), tr("确定"));              setCurrentItem(item);          }      }      else {          dupFlag = false;      }  }    void Table::setItemFixed(bool flag)  {    if (flag == true)        horizontalHeader()->setResizeMode(QHeaderView::Fixed);    else        horizontalHeader()->setResizeMode(QHeaderView::Interactive);  }    bool Table::getSelectedRow(QList<int> &rowList)  {      //多选并获取所选行      QList<QTableWidgetItem *> items = this->selectedItems();      int itemCount = items.count();      if(itemCount <= 0) {          return false;      }      for (int index = 0; index < itemCount; index++) {          int itemRow = this->row(items.at(index));          rowList.append(itemRow);      }      return  true;  }    void Table::slotItemEntered(QTableWidgetItem *item)  {    if(!item)      return;    QString name = item->text();    if (name.isEmpty())      return;    QToolTip::showText(QCursor::pos(), name);  }    void Table::slotActionRename()  {      //获得当前节点并获取编辑名称      if (rightClickedItem) {          int editRow = rightClickedItem->row();          QTableWidgetItem *item = this->item(editRow, 0);   //编辑的行号及第一列          this->setCurrentCell(editRow, 0);          this->openPersistentEditor(item);                  //打开编辑项          this->editItem(item);      }  }

喜欢 (0)赏

[搞代码]

分享 (0)