QT无标题栏+阴影边框

#include "mainwindow.h" #include "ui_mainwindow.h" #include "QPixmap" #include "QPainter" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); shadowbackgroundlist.append(QPixmap("://shadow_left")); shadowbackgroundlist.append(QPixmap("://shadow_left_top")); shadowbackgroundlist.append(QPixmap("://shadow_top")); shadowbackgroundlist.append(QPixmap("://shadow_right_top")); shadowbackgroundlist.append(QPixmap("://shadow_right")); shadowbackgroundlist.append(QPixmap("://shadow_right_bottom")); shadowbackgroundlist.append(QPixmap("://shadow_bottom")); shadowbackgroundlist.append(QPixmap("://shadow_left_bottom")); setWindowFlags(Qt::FramelessWindowHint); //setAttribute(Qt::WA_TranslucentBackground); } MainWindow::~MainWindow() { delete ui; } #define BORDER_TOP 8 #define BORDER_RIGHT 8 #define BORDER_BOTTOM 8 #define BORDER_LEFT 8 #define titleHeight 8 void MainWindow::paintEvent(QPaintEvent *event) { QPainter painter(this); QSize VLeftShadowSize = QSize(BORDER_LEFT,this->height()-BORDER_TOP-BORDER_BOTTOM); /* 阴影垂直大小-左边 */ QSize VRightShadowSize = QSize(BORDER_RIGHT,this->height()-BORDER_TOP-BORDER_BOTTOM); /* 阴影垂直大小-右边 */ QSize HTopShadowSize = QSize(this->width()-BORDER_LEFT-BORDER_RIGHT,BORDER_TOP); /* 阴影水平大小-上边 */ QSize HBottomShadowSize = QSize(this->width()-BORDER_LEFT-BORDER_RIGHT,BORDER_BOTTOM); /* 阴影水平大小-下边 */ QSize CornerLTShadowSize = QSize(BORDER_LEFT,BORDER_TOP); /* 阴影大小-左上角 */ QSize CornerTRShadowSize = QSize(BORDER_TOP,BORDER_RIGHT); /* 阴影大小-右上角 */ QSize CornerLBShadowSize = QSize(BORDER_LEFT,BORDER_BOTTOM); /* 阴影大小-左下角 */ QSize CornerRBShadowSize = QSize(BORDER_RIGHT,BORDER_BOTTOM); /* 阴影大小-右下角 */ QRect LeftRectangle = QRect(QPoint(0,BORDER_LEFT),VLeftShadowSize); QRect RightRectangle = QRect(QPoint(this->width()-BORDER_RIGHT,BORDER_TOP),VRightShadowSize); QRect TopRectangle = QRect(QPoint(BORDER_LEFT,0),HTopShadowSize); QRect BottomRectangle = QRect(QPoint(BORDER_LEFT,this->height()-BORDER_BOTTOM),HBottomShadowSize); QRect CornerLTRectangle = QRect(QPoint(0,0),CornerLTShadowSize); QRect CornerRTRectangle = QRect(QPoint(this->width()-BORDER_RIGHT,0),CornerTRShadowSize); QRect CornerLBRectangle = QRect(QPoint(0,this->height()-BORDER_BOTTOM),CornerLBShadowSize); QRect CornerRBRectangle = QRect(QPoint(this->width()-BORDER_RIGHT,this->height()-BORDER_BOTTOM),CornerRBShadowSize); painter.drawPixmap(LeftRectangle, shadowbackgroundlist[0].scaled(VLeftShadowSize)); /* 贴图：左边 */ painter.drawPixmap(RightRectangle, shadowbackgroundlist[4].scaled(VRightShadowSize)); /* 贴图：右边 */ painter.drawPixmap(TopRectangle, shadowbackgroundlist[2].scaled(HTopShadowSize)); /* 贴图：上边 */ painter.drawPixmap(BottomRectangle, shadowbackgroundlist[6].scaled(HBottomShadowSize)); /* 贴图：下边 */ painter.drawPixmap(CornerLTRectangle, shadowbackgroundlist[1].scaled(CornerLTShadowSize)); /* 贴图：左上角 */ painter.drawPixmap(CornerRTRectangle, shadowbackgroundlist[3].scaled(CornerTRShadowSize)); /* 贴图：右上角 */ painter.drawPixmap(CornerLBRectangle, shadowbackgroundlist[7].scaled(CornerLBShadowSize)); /* 贴图：右下角 */ painter.drawPixmap(CornerRBRectangle, shadowbackgroundlist[5].scaled(CornerRBShadowSize)); /* 贴图：左下角 */ }