使用QT写一段OpenGL的调用代码

我可以回答这个问题。以下是使用QT写一段OpenGL的调用代码的示例：

#include <QOpenGLWidget>
#include <QOpenGLFunctions>

class MyOpenGLWidget : public QOpenGLWidget, protected QOpenGLFunctions
{
public:
MyOpenGLWidget(QWidget *parent = nullptr) : QOpenGLWidget(parent) {}

protected:
void initializeGL() override
{
initializeOpenGLFunctions();
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
}

void paintGL() override
{
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_TRIANGLES);
glColor3f(1.0f, 0.0f, 0.0f);
glVertex3f(-0.5f, -0.5f, 0.0f);
glColor3f(0.0f, 1.0f, 0.0f);
glVertex3f(0.5f, -0.5f, 0.0f);
glColor3f(0.0f, 0.0f, 1.0f);
glVertex3f(0.0f, 0.5f, 0.0f);
glEnd();
}

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