Qt4 设置QTableWidget鼠标滑过的颜色

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这是一个简单demo，直接贴代码。

tablewidget.h

#ifndef TABLEWIDGET_H#define TABLEWIDGET_H#include <QTableWidget>#include <QEvent>class TableWidget : public QTableWidget{    Q_OBJECTpublic:    explicit TableWidget(QWidget *parent = 0);protected:    void setRowColor(int row, QColor color);    signals:    public slots:    void mycellEntered(int row, int column);private:    QTableWidget *tableWidget;    QColor defaultBkColor;    int previousColorRow;};#endif // TABLEWIDGET_H

tablewidget.cpp

#include "tablewidget.h"#include <QMessageBox>#include <QPoint>TableWidget::TableWidget(QWidget *parent) :    QTableWidget(parent){    setGeometry(100,100,600,300);    defaultBkColor = QColor(255,255,255);   //默认背景色    previousColorRow = -1;    tableWidget = new QTableWidget(this);    tableWidget->setRowCount(10);   //设置行数为10    tableWidget->setColumnCount(5); //设置列数为5    tableWidget->setGeometry(10,10,580,280);    tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);   //设置整行选择    tableWidget->setMouseTracking(true);    //开启捕获鼠标功能    tableWidget->setStyleSheet("selection-background-color:pink");  //设置选中行颜色    tableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);    //禁止编辑表格    for (int i=0; i<10; i++)        for (int j=0; j<5;j++)        {            QTableWidgetItem *item = new QTableWidgetItem(QIcon(":/btn1_bright"), "Jan");            tableWidget->setItem(i,j,item);        }    connect(tableWidget,SIGNAL(cellEntered(int,int)),this,SLOT(mycellEntered(int,int)));}void TableWidget::mycellEntered(int row, int column){    QTableWidgetItem *item = 0;    //还原上一行的颜色    item = tableWidget->item(previousColorRow, 0);    if (item != 0)    {        this->setRowColor(previousColorRow, defaultBkColor);    }    //设置当前行的颜色    item = tableWidget->item(row, column);    if (item != 0 && !item->isSelected() && !item->text().isEmpty())    {        this->setRowColor(row, QColor(193,210,240));    }    //设置行的索引    previousColorRow = row;}//设置某一行的颜色void TableWidget::setRowColor(int row, QColor color){    for (int col=0; col<tableWidget->columnCount(); col++)    {        QTableWidgetItem *item = tableWidget->item(row, col);        item->setBackgroundColor(color);    }}

main.cpp

#include <QApplication>#include <QTextCodec>#include "tablewidget.h"int main(int argc, char *argv[]){    QApplication a(argc, argv);    QTextCodec::setCodecForTr(QTextCodec::codecForName("System"));  //消除乱码    TableWidget tableWidget;    tableWidget.show();    return a.exec();}

运行效果：