QTableWidget简单应用之文件浏览器

 实现下面这个简单的文件浏览功能，常用的QTableWidget设置都用到了。 

基本设置

    ui->tableWidget->setColumnCount(5); //设置表格列数 ui->tableWidget->horizontalHeader()->setStretchLastSection(true); //设置表格是否充满，即行位不留空 ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);//设置鼠标选择行为：一个单元格/一行/一列 ui->tableWidget->horizontalHeader()->setFixedHeight(35); //设置表头高度 /*设置表头单元格内容*/ QStringList header; header<<tr("File Name")<<tr("Size")<<tr("Double Click to Decode") << "Double Click to Close"<< tr("Decode Process"); ui->tableWidget->setHorizontalHeaderLabels(header); /*设置表头字体加粗*/ QFont font = ui->tableWidget->horizontalHeader()->font(); font.setBold(true); ui->tableWidget->horizontalHeader()->setFont(font); ui->tableWidget->setFrameShape(QFrame::NoFrame); //设置无边框 ui->tableWidget->verticalHeader()->hide(); //设置垂直的头部隐藏，不隐藏默认会显示列表数字 ui->tableWidget->horizontalHeader()->resizeSection(0,150); //设置第0列的宽度为150px ui->tableWidget->setItemDelegate(new NoFocusDelegate()); //设置鼠标行时，不显示单元格虚框，NoFocusDelegate类实现如附录 ui->tableWidget->setMouseTracking(true); //设置鼠标捕捉，不设置，如鼠标进入等动作检测不到 ui->tableWidget->setStyleSheet("selection-");//设置行选中时背景颜色 ui->tableWidget->horizontalHeader()->setStyleSheet("QHeaderView::section{background:greenyellow;}");//表头背景颜色 /*信号槽，单元格双击*/ connect(ui->tableWidget, SIGNAL(cellDoubleClicked(int,int)), this, SLOT(sdlog2Decode(int,int))); /*信号槽，鼠标进入单元格*/ connect(ui->tableWidget,SIGNAL(itemEntered(QTableWidgetItem*)), this,SLOT(itemEnteredHover(QTableWidgetItem *))); /*添加构件到单元格，如按钮，进度条等*/ QProgressBar *pgbar = new QProgressBar(ui->tableWidget); pgbar->setTextVisible(false); ui->tableWidget->setCellWidget(row,column,pgbar); //替换当前widget /*设置单元格背景颜色*/ QTableWidgetItem *itemtemp = ui->tableWidget->item(row, col); itemtemp->setBackgroundColor(QColor(255,255,255,255)); ui->tableWidget->removeCellWidget(row,col); //移除单元格中的构件 ui->tableWidget->removeRow(row); //移除表格某一行 int col = ui->tableWidget->columnCount(); //获取表格列数 int row = ui->tableWidget->rowCount(); //获取行数 /*插入第row行，以两列为例*/ ui->tableWidget->insertRow(row); QTableWidgetItem *Item1 = new QTableWidgetItem("hello1"); Item1->setTextAlignment(Qt::AlignCenter | Qt::AlignVCenter); Item1->setFlags(Item1->flags() ^ Qt::ItemIsEditable); QTableWidgetItem *Item2 = new QTableWidgetItem("hello2"); //设置单元格内容 Item2->setTextAlignment(Qt::AlignCenter | Qt::AlignVCenter); //设置单元格内容对其方式 Item2->setFlags(Item2->flags() ^ Qt::ItemIsEditable); //设置单元格是否可编辑 ui->tableWidget->setItem(row, 0, Item1); ui->tableWidget->setItem(row, 1, Item2); /*设置各种文件icon*/ QFileInfo info; QFile file(currentDir.absoluteFilePath(filesname)); info = QFileInfo(filesname); qint64 size = info.size(); QFileIconProvider icon_provider; QIcon icon = icon_provider.icon(info); QTableWidgetItem *fileNameItem = new QTableWidgetItem(info.filePath()); fileNameItem->setIcon(icon); fileNameItem->setTextAlignment(Qt::AlignCenter | Qt::AlignVCenter); fileNameItem->setFlags(fileNameItem->flags() ^ Qt::ItemIsEditable);

附录程序

NoFocusDelegate.h

#ifndef NoFocusDelegate_H #define NoFocusDelegate_H #include <QPainter> #include <QStyledItemDelegate> class NoFocusDelegate :public QStyledItemDelegate { public: NoFocusDelegate(); ~NoFocusDelegate(); protected: void paint(QPainter* painter, const QStyleOptionViewItem & option, const QModelIndex &index) const; }; #endif // SETHIGHLIGHTSECTIONS_H

NoFocusDelegate.cpp

#include "NoFocusDelegate.h" NoFocusDelegate::NoFocusDelegate() { } NoFocusDelegate::~NoFocusDelegate() { } 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); } 

http://blog.csdn.net/freeape/article/details/47404265