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;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150pxui->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-background-color:lightblue;”);//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.hclass NoFocusDelegate :public QStyledItemDelegate{public:NoFocusDelegate();~NoFocusDelegate();protected:void paint(QPainter* painter, const QStyleOptionViewItem & option, const QModelIndex &index) const;};#endif // SETHIGHLIGHTSECTIONS_HNoFocusDelegate.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);}
谦受益，满招损。
