MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
setAttribute(Qt::WA_TranslucentBackground, true);
setWindowFlags(Qt::Window | Qt::FramelessWindowHint
| Qt::WindowSystemMenuHint | Qt::WindowMinimizeButtonHint
| Qt::WindowMaximizeButtonHint);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::paintEvent(QPaintEvent *e)
{
QPainter p(this);
p.setBrush(QColor("#CCCCFF"));
p.setPen(QColor("#FF0000"));
p.drawRoundedRect(0, 0, width() - 1, height() - 1, 20, 20);
}