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如此这样就能使用上下左右键移动焦点，使用确认键来操作了。

想没想起来，以前的老式非智能机的时代，导航按键不就是 上下左右+确认吗？？？

上图吧。

上代码吧.

#include "zpage1.h"

#include <QApplication> int main(int argc, char *argv[]) {     QApplication a(argc, argv);     a.setStyleSheet("\                     QToolButton:focus{background-color:yellow;}\                     QCheckBox:focus{background-color:yellow;}\                     QRadioButton:focus{background-color:yellow;}");     ZPage1 w;     w.show();     return a.exec(); } #ifndef ZPAGE1_H #define ZPAGE1_H #include <QWidget> #include <QKeyEvent> #include <QDebug> #include <QGridLayout> #include <QToolButton> #include <zdialog1.h> #include <zpage2.h> class ZPage1 : public QWidget {     Q_OBJECT public:     ZPage1(QWidget *parent = 0);     ~ZPage1(); protected:     bool eventFilter(QObject *obj, QEvent *event); private slots:     void ZSlotBtnClicked(); private:     QGridLayout *m_gridLayout;     QToolButton *m_btnArray[20];     ZPage2 *m_page2; }; #endif // ZPAGE1_H #include "zpage1.h" ZPage1::ZPage1(QWidget *parent)     : QWidget(parent) {     this->setStyleSheet("QToolButton{width:50px;height:30px;}");     this->m_gridLayout=new QGridLayout;     qint32 tX=0;     qint32 tY=0;     for(qint32 i=0;i<20;i++)     {         this->m_btnArray[i]=new QToolButton;         this->m_btnArray[i]->installEventFilter(this);         this->m_btnArray[i]->setText(QString("%1").arg(i+1));         this->m_gridLayout->addWidget(this->m_btnArray[i],tX,tY);         if(tX++>=5)         {             tY++;             tX=0;         }         connect(this->m_btnArray[i],SIGNAL(clicked()),this,SLOT(ZSlotBtnClicked()));     }     this->setLayout(this->m_gridLayout);     this->m_page2=new ZPage2; } ZPage1::~ZPage1() {     for(qint32 i=0;i<20;i++)     {         delete this->m_btnArray[i];     }     delete this->m_gridLayout;     delete this->m_page2; } void ZPage1::ZSlotBtnClicked() {     QToolButton *btn=qobject_cast<QToolButton*>(sender());     if(btn)     {         qDebug()<<"Button Clicked:"<<btn->text();         if(btn==this->m_btnArray[2])         {             this->m_page2->setGeometry(100,100,400,300);             this->m_page2->show();         }         if(btn==this->m_btnArray[3])         {             ZDialog1 tdia;             tdia.exec();         }     } } bool ZPage1::eventFilter(QObject *obj, QEvent *event) {     if(event->type()==QEvent::KeyPress)     {         qint32 tCurFocusX;         qint32 tCurFocusY;         for(qint32 i=0;i<this->m_gridLayout->rowCount();i++)         {             bool bFindIt=false;             for(qint32 j=0;j<this->m_gridLayout->columnCount();j++)             {                 QLayoutItem *tItem=this->m_gridLayout->itemAtPosition(i,j);                 if(!tItem)                 {                     continue;                 }                 QWidget *tFocusWidget=tItem->widget();                 if(tFocusWidget && tFocusWidget==this->focusWidget())                 {                     qDebug()<<"oldPos:"<<i<<j;                     tCurFocusX=i;                     tCurFocusY=j;                     bFindIt=true;                     break;                 }             }             if(bFindIt)             {                 break;             }         }         QKeyEvent *tKeyEvent=static_cast<QKeyEvent*>(event);         switch(tKeyEvent->key())         {         //"Return" is the left area Enter key,"Enter" is the right digital area Enter key.         //they are different.         //case Qt::Key_Enter:         case Qt::Key_Return:         {             qDebug()<<"return";             QLayoutItem *tNewItem=this->m_gridLayout->itemAtPosition(tCurFocusX,tCurFocusY);             if(tNewItem)             {                 QToolButton *tBtn=qobject_cast<QToolButton*>(tNewItem->widget());                 if(tBtn)                 {                     emit tBtn->click();                     return true;                 }             }         }         case Qt::Key_Up:             qDebug()<<"up";             if(tCurFocusX>0)             {                 tCurFocusX--;             }             break;         case Qt::Key_Down:             qDebug()<<"down";             if(tCurFocusX<this->m_gridLayout->rowCount()-1)             {                 tCurFocusX++;             }             break;         case Qt::Key_Left:             qDebug()<<"left";             if(tCurFocusY>0)             {                 tCurFocusY--;             }             break;         case Qt::Key_Right:             qDebug()<<"right";             if(tCurFocusY<this->m_gridLayout->columnCount()-1)             {                 tCurFocusY++;             }             break;         default:             break;         }         qDebug()<<"newPos:"<<tCurFocusX<<tCurFocusY;         QLayoutItem *tNewItem=this->m_gridLayout->itemAtPosition(tCurFocusX,tCurFocusY);         if(tNewItem)         {             tNewItem->widget()->setFocus();         }         //we already handle this event,so return false.         //this cause qt do not call other event handler.         return true;     }     return false; } #ifndef ZPAGE2_H #define ZPAGE2_H #include <QWidget> #include <QTextEdit> #include <QGridLayout> #include <QToolButton> #include <QEvent> #include <QKeyEvent> #include <QCheckBox> #include <QRadioButton> #include <QDebug> class ZPage2 : public QWidget {     Q_OBJECT public:     explicit ZPage2(QWidget *parent = 0);     ~ZPage2(); protected:     bool eventFilter(QObject *obj, QEvent *event); signals: public slots:     void ZSlotAddSomething(); private:     QTextEdit *m_textEdit;     QToolButton *m_btnAdd;     QToolButton *m_btnClose;     QCheckBox *m_checkBox1;     QCheckBox *m_checkBox2;     QRadioButton *m_radio1;     QRadioButton *m_radio2;     QGridLayout *m_gridLayout; }; #endif // ZPAGE2_H #include "zpage2.h" ZPage2::ZPage2(QWidget *parent) :     QWidget(parent) {     this->m_textEdit=new QTextEdit;     this->m_textEdit->installEventFilter(this);     this->m_btnAdd=new QToolButton;     this->m_btnAdd->installEventFilter(this);     this->m_btnAdd->setText(tr("Add"));     connect(this->m_btnAdd,SIGNAL(clicked()),this,SLOT(ZSlotAddSomething()));     this->m_btnClose=new QToolButton;     this->m_btnClose->installEventFilter(this);     this->m_btnClose->setText(tr("Close"));     connect(this->m_btnClose,SIGNAL(clicked()),this,SLOT(close()));     this->m_checkBox1=new QCheckBox;     this->m_checkBox1->installEventFilter(this);     this->m_checkBox1->setText(tr("Male"));     this->m_checkBox2=new QCheckBox;     this->m_checkBox2->installEventFilter(this);     this->m_checkBox2->setText(tr("Female"));     this->m_radio1=new QRadioButton;     this->m_radio1->setText(tr("Big"));     this->m_radio1->installEventFilter(this);     this->m_radio2=new QRadioButton;     this->m_radio2->setText(tr("Small"));     this->m_radio2->installEventFilter(this);     this->m_gridLayout=new QGridLayout;     this->m_gridLayout->addWidget(this->m_textEdit,0,0,1,2);     this->m_gridLayout->addWidget(this->m_btnAdd,1,0,1,1);     this->m_gridLayout->addWidget(this->m_btnClose,1,1,1,1);     this->m_gridLayout->addWidget(this->m_checkBox1,2,0,1,1);     this->m_gridLayout->addWidget(this->m_checkBox2,2,1,1,1);     this->m_gridLayout->addWidget(this->m_radio1,3,0,1,1);     this->m_gridLayout->addWidget(this->m_radio2,3,1,1,1);     this->setLayout(this->m_gridLayout); } ZPage2::~ZPage2() {     delete this->m_textEdit;     delete this->m_btnAdd;     delete this->m_btnClose;     delete this->m_checkBox1;     delete this->m_checkBox2;     delete this->m_radio1;     delete this->m_radio2;     delete this->m_gridLayout; } bool ZPage2::eventFilter(QObject *obj, QEvent *event) {     if(event->type()==QEvent::KeyPress)     {         QKeyEvent *tEvent=static_cast<QKeyEvent*>(event);         if(tEvent)         {             //find current focus widget's (x,y).             qint32 tFocusX;             qint32 tFocusY;             bool bFindIt=false;             for(qint32 i=0;i<this->m_gridLayout->rowCount();i++)             {                 for(qint32 j=0;j<this->m_gridLayout->columnCount();j++)                 {                     QLayoutItem *tItem=this->m_gridLayout->itemAtPosition(i,j);                     if(!tItem)                     {                         continue;                     }                     QWidget *tWidget=tItem->widget();                     if(!tWidget || !this->focusWidget())                     {                         continue;                     }                     if(tWidget==this->focusWidget())                     {                         //find current focus widget's (x,y).                         tFocusX=i;                         tFocusY=j;                         bFindIt=true;                         break;                     }                 }                 if(bFindIt)                 {                     //exit the external loop.                     break;                 }             }             //move focus to next widget.             switch(tEvent->key())             {             case Qt::Key_Left:                 if(tFocusY>0)                 {                     tFocusY--;                 }                 break;             case Qt::Key_Right:                 if(tFocusY<this->m_gridLayout->columnCount()-1)                 {                     tFocusY++;                 }                 break;             case Qt::Key_Up:                 if(tFocusX>0)                 {                     tFocusX--;                 }                 break;             case Qt::Key_Down:                 if(tFocusX<this->m_gridLayout->rowCount()-1)                 {                     tFocusX++;                 }                 break;             case Qt::Key_Return:             {                 qDebug()<<"Key_Return";                 QLayoutItem *tItem=this->m_gridLayout->itemAtPosition(tFocusX,tFocusY);                 if(tItem)                 {                     if(tItem->widget())                     {                         QToolButton *tBtn=qobject_cast<QToolButton*>(tItem->widget());                         if(tBtn)                         {                             emit tBtn->click();                             //we handle this event,so return true.                             return true;                         }                         QCheckBox *tCheckBox=qobject_cast<QCheckBox*>(tItem->widget());                         if(tCheckBox)                         {                             qDebug()<<"change checkState";                             tCheckBox->setChecked(tCheckBox->checkState()==Qt::Checked?Qt::Unchecked:Qt::Checked);                             //we handle this event,so return true.                             return true;                         }                         QRadioButton *tRadio=qobject_cast<QRadioButton*>(tItem->widget());                         if(tRadio)                         {                             tRadio->setChecked(true);                             //we handle this event,so return true.                             return true;                         }                     }                 }             }                 break;             default:                 break;             }             //execute cursor here.             QLayoutItem *tItem=this->m_gridLayout->itemAtPosition(tFocusX,tFocusY);             if(tItem)             {                 if(tItem->widget())                 {                     tItem->widget()->setFocus();                     //we handle this event,so return true.                     return true;                 }             }         }     }     return false; } void ZPage2::ZSlotAddSomething() {     this->m_textEdit->append("hello"); } #ifndef ZDIALOG1_H #define ZDIALOG1_H #include <QDialog> #include <QGridLayout> #include <QToolButton> #include <QListWidget> #include <QKeyEvent> #include <QDebug> class ZDialog1 : public QDialog {     Q_OBJECT public:     explicit ZDialog1(QWidget *parent = 0);     ~ZDialog1(); protected:     bool eventFilter(QObject *obj, QEvent *event); signals: public slots: private:     QListWidget *m_listWidget;     QToolButton *m_btnFirst;     QToolButton *m_btnPrev;     QToolButton *m_btnNext;     QToolButton *m_btnLast;     QToolButton *m_btnReturn;     QGridLayout *m_gridLayout;     QVBoxLayout *m_vLayout; }; #endif // ZDIALOG1_H #include "zdialog1.h" ZDialog1::ZDialog1(QWidget *parent) :     QDialog(parent) {

//shell.albert

    this->m_listWidget=new QListWidget;     this->m_listWidget->setFocusPolicy(Qt::NoFocus);     this->m_listWidget->addItem(tr("Liangdu"));     this->m_listWidget->addItem(tr("SeDu"));     this->m_listWidget->addItem(tr("DuibiDu"));     this->m_btnFirst=new QToolButton;     this->m_btnFirst->setText(tr("First"));     this->m_btnFirst->installEventFilter(this);     this->m_btnPrev=new QToolButton;     this->m_btnPrev->setText(tr("Previous"));     this->m_btnPrev->installEventFilter(this);     this->m_btnNext=new QToolButton;     this->m_btnNext->setText(tr("Next"));     this->m_btnNext->installEventFilter(this);     this->m_btnLast=new QToolButton;     this->m_btnLast->setText(tr("Last"));     this->m_btnLast->installEventFilter(this);     this->m_btnReturn=new QToolButton;     this->m_btnReturn->setText(tr("Return"));     this->m_btnReturn->installEventFilter(this);     connect(this->m_btnReturn,SIGNAL(clicked()),this,SLOT(accept()));     this->m_gridLayout=new QGridLayout;     this->m_gridLayout->addWidget(this->m_btnFirst,0,0);     this->m_gridLayout->addWidget(this->m_btnPrev,0,1);     this->m_gridLayout->addWidget(this->m_btnNext,0,2);     this->m_gridLayout->addWidget(this->m_btnLast,0,3);     this->m_gridLayout->addWidget(this->m_btnReturn,0,4);     this->m_vLayout=new QVBoxLayout;     this->m_vLayout->addWidget(this->m_listWidget);     this->m_vLayout->addLayout(this->m_gridLayout);     this->setLayout(this->m_vLayout); } ZDialog1::~ZDialog1() {     delete this->m_btnFirst;     delete this->m_btnPrev;     delete this->m_btnNext;     delete this->m_btnLast;     delete this->m_btnReturn;     delete this->m_listWidget;     delete this->m_gridLayout;     delete this->m_vLayout; } bool ZDialog1::eventFilter(QObject *obj, QEvent *event) { #if 0     if(event->type()==QEvent::KeyPress)     {         QKeyEvent *tKeyEvent=static_cast<QKeyEvent*>(event);         switch(tKeyEvent->key())         {         case Qt::Key_Escape:             qDebug()<<"esc key was pressed.";             emit this->m_btnReturn->click();             return true;             break;         default:             break;         }         return true;     }     return false; #endif     if(event->type()==QEvent::KeyPress)     {         qint32 tCurFocusX;         qint32 tCurFocusY;         for(qint32 i=0;i<this->m_gridLayout->rowCount();i++)         {             bool bFindIt=false;             for(qint32 j=0;j<this->m_gridLayout->columnCount();j++)             {                 QLayoutItem *tItem=this->m_gridLayout->itemAtPosition(i,j);                 if(!tItem)                 {                     continue;                 }                 QWidget *tFocusWidget=tItem->widget();                 if(tFocusWidget && tFocusWidget==this->focusWidget())                 {                     qDebug()<<"oldPos:"<<i<<j;                     tCurFocusX=i;                     tCurFocusY=j;                     bFindIt=true;                     break;                 }             }             if(bFindIt)             {                 break;             }         }         QKeyEvent *tKeyEvent=static_cast<QKeyEvent*>(event);         switch(tKeyEvent->key())         {         //"Return" is the left area Enter key,"Enter" is the right digital area Enter key.         //they are different.         //case Qt::Key_Enter:         case Qt::Key_Return:         {             qDebug()<<"return";             QLayoutItem *tNewItem=this->m_gridLayout->itemAtPosition(tCurFocusX,tCurFocusY);             if(tNewItem)             {                 QToolButton *tBtn=qobject_cast<QToolButton*>(tNewItem->widget());                 if(tBtn)                 {                     emit tBtn->click();                     return true;                 }             }         }         case Qt::Key_Up:             qDebug()<<"up";             if(tCurFocusX>0)             {                 tCurFocusX--;             }             break;         case Qt::Key_Down:             qDebug()<<"down";             if(tCurFocusX<this->m_gridLayout->rowCount()-1)             {                 tCurFocusX++;             }             break;         case Qt::Key_Left:             qDebug()<<"left";             if(tCurFocusY>0)             {                 tCurFocusY--;             }             break;         case Qt::Key_Right:             qDebug()<<"right";             if(tCurFocusY<this->m_gridLayout->columnCount()-1)             {                 tCurFocusY++;             }             break;         default:             break;         }         qDebug()<<"newPos:"<<tCurFocusX<<tCurFocusY;         QLayoutItem *tNewItem=this->m_gridLayout->itemAtPosition(tCurFocusX,tCurFocusY);         if(tNewItem)         {             tNewItem->widget()->setFocus();         }         //we already handle this event,so return false.         //this cause qt do not call other event handler.         return true;     }     return false; } 奔跑吧，兄弟,告别鼠标的年代开始了，连接好你的物理矩阵按键，写好你的驱动，激动吧。。。。。。。。。。。。。。。。。。。。