QT 模拟鼠标事件

模拟鼠标按键

和模拟键盘按键类似，也是通过发送相应的事件来实现的，安装相应的事件监听器，具体发送事件：
QPoint pos;
pos.setX(88);
pos.setY(58);
QMouseEvent *mEvnPress;
QMouseEvent *mEvnRelease;
mEvnPress = new QMouseEvent(QEvent::MouseButtonPress, pos, Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
QApplication::sendEvent(QWidget::focusWidget(),mEvnPress);
mEvnRelease = new QMouseEvent(QEvent::MouseButtonRelease, pos, Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
QApplication::sendEvent(QWidget::focusWidget(),mEvnRelease);

主要的分析函数是：
QMouseEvent::QMouseEvent ( Type type, const QPoint & position, Qt::MouseButton button, Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers )
参数分析：
The type parameter must be one of QEvent::MouseButtonPress, QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick, or QEvent::MouseMove.
The position is the mouse cursor's position relative to the receiving widget.
The button that caused the event is given as a value from the Qt::MouseButton enum. If the event type is MouseMove, the appropriate button for this event is Qt::NoButton.
The mouse and keyboard states at the time of the event are specified by buttons and modifiers.
The globalPos() is initialized to QCursor::pos(), which may not be appropriate. Use the other constructor to specify the global position explicitly.
主要说明：
这里的pos的位置是接受鼠标事件的widget的内部的一个局部位置。也就是说他的鼠标按键的产生点是：先通过
QApplication::sendEvent(QWidget::focusWidget(),mEvnPress);//也就是说先是指明了传递给哪个widget
然后再根据mEventPress来进行具体的再改widget中的定位，以及具体的按键是什么。

bool MainWidget::eventFilter(QObject *target, QEvent *event)
{
if(event->type()==QEvent::FocusIn){//event->type()==QEvent::Enter ||
static_cast<QPushButton*>(target)->setStyleSheet("background-color: rgb(129, 129,129)");
QPalette pal;
pal.setColor(QPalette::Active,QPalette::ButtonText,Qt::red);
static_cast<QPushButton*>(target)->setPalette(pal);
}
else if(event->type()==QEvent::FocusOut){//event->type()==QEvent::Leave ||
static_cast<QPushButton*>(target)->setStyleSheet("");
QPalette pal;
pal.setColor(QPalette::Active,QPalette::ButtonText,Qt::black);
static_cast<QPushButton*>(target)->setPalette(pal);
}
else if(event->type()== QEvent::KeyPress){
QPoint pos;
QWidget *now_button= QWidget::focusWidget();
QKeyEvent *k = (QKeyEvent *)event;
QLayoutItem *next_button;
switch (k->key()){

case Qt::Key_Up:
next_button= ui->gridLayout->itemAt((ui->gridLayout->indexOf(now_button)+8)%12);
next_button->widget()->setFocus();
break;
case Qt::Key_Down:
next_button= ui->gridLayout->itemAt((ui->gridLayout->indexOf(now_button)+4)%12);
next_button->widget()->setFocus();
#ifdef COURSE
QCursor::setPos(pos);
#endif
break;
case Qt::Key_Left:
next_button= ui->gridLayout->itemAt((ui->gridLayout->indexOf(now_button)-1+12)%12);
next_button->widget()->setFocus();
#ifdef COURSE
QCursor::setPos(pos);
#endif
break;
case Qt::Key_Right:
next_button= ui->gridLayout->itemAt((ui->gridLayout->indexOf(now_button)+1)%12);
next_button->widget()->setFocus();
break;
case Qt::Key_Period:
pos = now_button->pos();
pos.setX( 20 + pos.x()+(now_button->width())/2 );
pos.setY( 20 + pos.y()+(now_button->height())/2 );
//printf("/n***%d1 %d***/n",pos.x(),pos.y());
#ifdef COURSE
QCursor::setPos(pos);
#endif
pos.setX(88);
pos.setY(58);
QMouseEvent *mEvnPress;
QMouseEvent *mEvnRelease;
mEvnPress = new QMouseEvent(QEvent::MouseButtonPress, pos, Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
QApplication::sendEvent(QWidget::focusWidget(),mEvnPress);
mEvnRelease = new QMouseEvent(QEvent::MouseButtonRelease, pos, Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
QApplication::sendEvent(QWidget::focusWidget(),mEvnRelease);
next_button = ui->gridLayout->itemAt(ui->gridLayout->indexOf(QWidget::focusWidget()));
break;
default:
return QWidget::eventFilter(target,event);
}

if(next_button){
pos.setX( 20 + next_button->geometry().x() + (next_button->geometry().width()) / 2 );
pos.setY( 20 + next_button->geometry().y() + (next_button->geometry().height()) / 2);
#ifdef COURSE
QCursor::setPos(pos);
#endif
}
return true;
}
return QWidget::eventFilter(target,event);
}