Draw a solid cube in OpenGL - c++

Question

I am trying to draw a solid cube in open GL to serve as a background of an interface button. The problem is, it is not being drawn on the screen at all. I have a class OGWindow that handles the drawing and a main class/method. I invoke all of the necessary methods from OGWindow in the main class. What am I doing wrong here?
This is my main class:
OGWindow theWindow;
int main(int argc, char **argv) {
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize( 1000, 600 );
glutInitWindowPosition(0, 0);
glutCreateWindow("OpenGL Demo");
glEnable(GL_DEPTH_TEST); // enable the depth buffer test
glutDisplayFunc(DrawGLScene);
glutReshapeFunc(ReSizeGLScene);
glutMouseFunc(mouseClick);
glutMotionFunc(mouseMotion);
glutPassiveMotionFunc(mousePassiveMotion);
glutIdleFunc(Idle);
theWindow.initGL();
glutMainLoop();
}
void DrawGLScene(void) {
theWindow.myDrawGLScene();
}
This is my OGWindow class:
void OGWindow::initGL(void) {
glClearColor(1.0, 1.0, 1.0, 1.0);
squareX = 1.0;
squareY = 1.0;
squareWidth = 40.0;
squareHeight = 40.0;
squareColour = RED;
squareDraggingP = false;
}
void OGWindow::MyReSizeGLScene(int fwidth, int fheight)
{
// Store window size in class variables so it can be accessed in myDrawGLScene() if necessary
wWidth = fwidth;
wHeight = fheight;
// Calculate aspect ration of the OpenGL window
aspect_ratio = (float) fwidth / fheight;
// Set camera so it can see a square area of space running from 0 to 10
// in both X and Y directions, plus a bit of space around it.
Ymin = 0;
Xmin = 0;
Ymax = 600;
// Choose Xmax so that the aspect ration of the projection
// = the aspect ratio of the viewport
//Xmax = (aspect_ratio * (Ymax -Ymin)) + Xmin;
Xmax = 1000;
glMatrixMode(GL_PROJECTION); // Select The Projection Stack
glLoadIdentity();
glOrtho(Xmin, Xmax, Ymin, Ymax, -1.0, 1.0);
glViewport(0, 0, wWidth, wHeight); // Viewport fills the window
}
void OGWindow::myDrawGLScene(GLvoid) // Here's Where We Do All The Drawing
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the drawing area
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
OGWindow::myDrawModel();
glColor3f(0.0, 0.0, 0.0);
drawToolbar();
drawCreateButton();
glutSwapBuffers(); // Needed if we're running an animation
glFlush();
}
And this is the method that is suppose to draw a solid cube in the scene:
void OGWindow::drawCreateButton(GLvoid){
glPushMatrix();
glColor3f(0.0, 1.0, 0.0);
glTranslatef(10.0,30.0,0.0);
glutSolidCube(4);
glPopMatrix();
}

Answer 1

Sorry if i'm not answering your question, but it seems you're not using modern OpenGL, functions like glMatrixMode(GL_PROJECTION); and a lot more in your code should be avoided in modern applications.
Instead of glVertex() and glColor() you should use a VBO and a shader.
Here's a modern OpenGL tutorial wich is easy to follow: OpenGL tutorial for beginners