int DrawGLScene(GLvoid) // Here's Where We Do All The Drawing{ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer glLoadIdentity(); // Reset The Current Modelview Matrix glTranslatef(0.0f, 0.0f, -8.0f); // Move Right 3 Units glRotatef(rquad, 0.0f, 0.0f, 1.0f); // Rotate The Quad On The X axis glBegin(GL_QUADS); // Draw A Quad glColor3f(1.0f,0.0f,0.0f); // Set The Color To Red glVertex3f(-1.0f, 1.0f, 0.0f); // Top Left glColor3f(0.0f,1.0f,0.0f); // Set The Color To Green glVertex3f( 1.0f, 1.0f, 0.0f); // Top Right glColor3f(0.0f,0.0f,1.0f); // Set The Color To Blue glVertex3f( 1.0f,-1.0f, 0.0f); // Bottom Right glColor3f(0.0f,0.5f,0.5f); // Set The Color To Blue glVertex3f(-1.0f,-1.0f, 0.0f); // Bottom Left glEnd(); // Done Drawing The Quad rquad -= 0.10f; // Decrease The Rotation Variable For The Quad return TRUE; // Everything Went OK}