Qt自定义继承QOpenGLWidget的类进行绘图

#include "myopengl.h" myopenGL::myopenGL(QWidget *parent) : QOpenGLWidget(parent) { } void myopenGL::initializeGL() { initializeOpenGLFunctions(); glClearColor(0,0,0,1); glEnable(GL_DEPTH_TEST); glEnable(GL_LIGHT0); glEnable(GL_LIGHTING); glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE); glEnable(GL_COLOR_MATERIAL); // cout<<glGetString(GL_VERSION)<<endl; } void myopenGL::paintGL() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glBegin(GL_TRIANGLES); glColor3f(1.0, 0.0, 0.0); glVertex3f(-5, -5, 0); glColor3f(0.0, 1.0, 0.0); glVertex3f( 5, -5, 0); glColor3f(0.0, 0.0, 1.0); glVertex3f( 0.0, 5, 0); glEnd(); } void myopenGL::resizeGL(int width, int height) { glViewport(0,0,width,height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(-width/2,width/2,-height/2,height/2,-1,1); glMatrixMode(GL_MODELVIEW); }