10.9作业

1、鼠标和键盘事件

#include "widget.h"
#include "ui_widget.h"
#include <QDebug>
#include <QMouseEvent>widget::widget(QWidget *parent): QWidget(parent), ui(new Ui::widget)
{ui->setupUi(this);this->setWindowFlag(Qt::FramelessWindowHint);
}widget::~widget()
{delete ui;
}void widget::keyPressEvent(QKeyEvent *event)
{//qDebug()<< event->text()<<"被按下的对应键值为："<<event->key();switch(event->key()){case 'W':case 'w':{if(ui->label1->y()<=-ui->label1->height()){ui->label1->move(ui->label1->x(),this->height());}ui->label1->move(ui->label1->x(),ui->label1->y()-5);}break;case 'S':case 's':{if(ui->label1->y()>=this->height()){ui->label1->move(ui->label1->x(),-ui->label1->height());}ui->label1->move(ui->label1->x(),ui->label1->y()+5);}break;case 'A':case 'a':{if(ui->label1->x()<=-ui->label1->width()){ui->label1->move(this->width(),ui->label1->y());}ui->label1->move(ui->label1->x()-5,ui->label1->y());}break;case 'D':case 'd':{if(ui->label1->x()>=this->width()){ui->label1->move(-ui->label1->width(),ui->label1->y());}ui->label1->move(ui->label1->x()+5,ui->label1->y());}break;} 
}void widget::mouseDoubleClickEvent(QMouseEvent *event)
{if(event->button() == Qt::RightButton){qDebug()<<"右键被双击";}
}void widget::mousePressEvent(QMouseEvent *event)
{temp = event->globalPos() - this->pos();
}
void widget::mouseMoveEvent(QMouseEvent *event)
{if(event->buttons() == Qt::MidButton){qDebug()<<"中键被移动，移动坐标："<<event->pos();}if(event->buttons() == Qt::RightButton){this->move(event->globalPos()-temp);}
}