opengl - How do I display gluCylinder in a window?

Question

This program can display a mesh of vertices and indices for cubes and stuff, but I don't know if I need to do something to the gluCylinder function for it to display in the window. The program runs, the window comes up, but the cylinder doesn't display:

int main(int argc, char* argv[])
{
    if (!UInitialize(argc, argv, &gWindow))
        return EXIT_FAILURE;
    
    qobj = gluNewQuadric();
    gluQuadricNormals(qobj, GLU_SMOOTH);
    gluCylinder(qobj, 1.0, 1.0, 0.4, 1, 16);
    // Create the mesh
    //UCreateMesh(gMesh); // Calls the function to create the Vertex Buffer Object

    // Create the shader program
    if (!UCreateShaderProgram(vertexShaderSource, fragmentShaderSource, gProgramId))
        return EXIT_FAILURE;

    // Sets the background color of the window to black (it will be implicitely used by glClear)
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

    // render loop
    // -----------
    while (!glfwWindowShouldClose(gWindow))
    {
        // input
        // -----
        UProcessInput(gWindow);
    
        // Render this frame
        URender();

        glfwPollEvents();
        
    }

    // Release mesh data
    UDestroyMesh(gMesh);

    // Release shader program
    UDestroyShaderProgram(gProgramId);

    exit(EXIT_SUCCESS); // Terminates the program successfully
}

Sorry if this is a dumb question but I'm really new to OpenGL and barely know C++

question from:https://stackoverflow.com/questions/65839462/how-do-i-display-glucylinder-in-a-window

Answer 1

Waitting for answers