[提问]qt下opengl不调用paintgl是什么原因？ [复制链接]

TargetChartView3D::TargetChartView3D(QWidget* parent)
    : QGLWidget(parent)
{
    QVector3D pos(0.0, 0.0, 12.0);
    QVector3D target(0.0, 0.0, 0.0);
    QVector3D up(0.0, 1.0, 0.0);
    setCamera(pos, target, up);
}
//TargetChartView3D::~TargetChartView3D()
//{
//}
void TargetChartView3D::initializeGL()
{
    glShadeModel(GL_SMOOTH);//设置阴影平滑模式
    glClearColor(1.0, 1.0, 1.0, 1.0);//改变窗口的背景颜色
    glClearDepth(1.0);//设置深度缓存
    glEnable(GL_DEPTH_TEST);//允许深度测试
    glDepthFunc(GL_LEQUAL);//设置深度测试类型
    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
    slide(-0.50, 1.40, 0.50);
}
void TargetChartView3D::paintGL()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity();
    setModelViewMatrix();
    GLDrawCubeCoordinates();
    GLDrawSpaceAxes();
    updateGL();
}
void TargetChartView3D::paintEvent(QPaintEvent *event)
{
    update();
}
void TargetChartView3D::resizeGL(int width, int height)
{
    if (height == 0)
    {
        height = 1;
    }
    glViewport(0, 0, (GLint)width, (GLint)height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(45.0, (GLfloat)width / (GLfloat)height, 0.1, 100.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    updateGL();
}