Qt Windows下的毛玻璃效果

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); this->setWindowFlags(Qt::Tool|Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint);//悬浮窗|取消标题栏 this-> setAutoFillBackground(false); //这个不设置的话就背景变黑 this->setAttribute(Qt::WA_TranslucentBackground);//设置窗口背景透明 auto blurEffect = new QGraphicsBlurEffect(ui->label); blurEffect->setBlurRadius(2); ui->label->setGraphicsEffect(blurEffect); QTimer::singleShot(0,this,SLOT(myslot_creat())); } void Widget::paintEvent(QPaintEvent *) { QPainter painter(this); // ui->label->setStyleSheet(""); // this->update(); } Widget::~Widget() { delete ui; } void Widget::myslot_creat() { QPixmap m_pixmap = QPixmap::grabWindow(QApplication::desktop()->winId(),this->x()+ui->label->x(),this->y()+ui->label->y(),ui->label-> width(),ui->label->height()); ui->label->setPixmap(m_pixmap); } void Widget::on_verticalSlider_actionTriggered(int action) { } void Widget::on_verticalSlider_valueChanged(int value) { auto blurEffect = new QGraphicsBlurEffect(ui->label); blurEffect->setBlurRadius(value); ui->label->setGraphicsEffect(blurEffect); } void Widget::on_pushButton_clicked() { auto blurEffect = new QGraphicsBlurEffect(ui->label); blurEffect->setBlurRadius(0); ui->label->setGraphicsEffect(blurEffect); this->hide(); myslot_creat(); this->show(); // auto blurEffect = new QGraphicsBlurEffect(ui->label); blurEffect->setBlurRadius(ui->verticalSlider->value()); ui->label->setGraphicsEffect(blurEffect); } void Widget::mousePressEvent(QMouseEvent *event) { if(event->button()==Qt::LeftButton){//左键拖动窗体 relativePos = this->pos()- event->globalPos(); } } void Widget::mouseReleaseEvent(QMouseEvent *event) { on_pushButton_clicked(); /* if (y() <= 0) { m_eEdgeStatus = EG_TOP; } else if (QApplication::desktop()->width() <= (this->x() + width())) { m_eEdgeStatus = EG_RIGHT; } else if (this->x() <= 0) { m_eEdgeStatus = EG_LEFT; } else if(QApplication::desktop()->height()<=(this->y() + height())) { m_eEdgeStatus = EG_BOTTOM; } else { m_eEdgeStatus = EG_NORMAL; } */ } void Widget::mouseMoveEvent(QMouseEvent *event)//移动窗体 { this->move(event->globalPos() + relativePos); }