一些代码

• 窗口全屏

    showFullScreen();      //全屏

• 设置窗口透明度，1是不透明，0是透明

    setWindowOpacity(0.1);  //设置窗口透明度

• Qt子控件阴影效果：

    QGraphicsDropShadowEffect * shadow = new QGraphicsDropShadowEffect(this);    shadow->boundingRectFor(this->ui->httpReplyContent->rect().adjusted(5,5,5,5));    shadow->setOffset(-5,5);        //设置阴影方向    shadow->setColor(Qt::gray);    //设置阴影颜色    shadow->setBlurRadius(10);    //设置阴影边缘模糊    this->ui->httpReplyContent->setGraphicsEffect(shadow);

效果：

• 去掉标题栏

    setWindowFlags(Qt::FramelessWindowHint);    //去掉标题栏

• 去掉标题栏后，设置窗口可用鼠标移动：去掉标题栏后处理鼠标消息，鼠标移动时移动窗口
  .h

protected:    void mouseMoveEvent(QMouseEvent * event);    void mousePressEvent(QMouseEvent * event);    void mouseReleaseEvent(QMouseEvent * event);private:    Ui::MainWindow *ui;    //设置拖动    QPoint m_ptPress;    bool  m_bLeftBtnPress;

.cpp

MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow){    m_bLeftBtnPress = false;    ui->setupUi(this);    setWindowFlags(Qt::FramelessWindowHint);    //去掉标题栏}MainWindow::~MainWindow(){    delete ui;}void MainWindow::mousePressEvent(QMouseEvent *event){    if(event->button() == Qt::LeftButton)    {        m_ptPress = event->globalPos(); //记录按下位置        m_bLeftBtnPress = true;    }    event->ignore();}void MainWindow::mouseMoveEvent(QMouseEvent *event){    if(m_bLeftBtnPress)                //移动窗口    {        move(pos() + event->globalPos() - m_ptPress);        m_ptPress = event->globalPos();    }    event->ignore();}void MainWindow::mouseReleaseEvent(QMouseEvent *event){    if(event->button() == Qt::LeftButton)        m_bLeftBtnPress = false;    event->ignore();}