#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<opencv2/opencv.hpp>
#include <QtOpenGL>
#include <QOpenGLFunctions>



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

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

void MainWindow::initializeGL()
{
    QOpenGLFunctions asxf;
    asxf.initializeOpenGLFunctions();
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
}

void MainWindow::resizeGL(int w, int h)
{
   glViewport(0, 0, w, h);
}

void MainWindow::paintGL()
{
    glClear(GL_COLOR_BUFFER_BIT);
}

I want to use OpenGL modules in QT, but when I couldn’t use the static `initialize` function, I tried calling it with a variable named `asfx`, but the background didn’t turn out as black as I wanted.