Qt实现文字拉伸

#pragma execution_character_set("utf-8")

#pragma execution_character_set("utf-8")
#include "mainwidget.h"
#include "ui_mainwidget.h"

MainWidget::MainWidget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::MainWidget)
{
    ui->setupUi(this);
}

MainWidget::~MainWidget()
{
    delete ui;
}

void MainWidget::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);

    QFont font("Microsoft YaHei", 5);//这里设置字体大小

    font.setStretch(1000);//字体拉伸
    painter.setFont(font);
    //绘制文本
    painter.drawText(100, this->height()/2, QString::fromLocal8Bit("ddddddd"));

}