opengl의 마우스 이벤트에 관해서

#include <glut.h>
#include <GLU.h>
#include <stdio.h>
#define TRUE 1
#define FALSE 0
static int SpinAngle = 0;
 
 
 
 
 
void InitLight(){
	GLfloat light0_ambient[] = {0.5, 0.4, 0.3, 1.0};
	GLfloat light0_diffuse[] = {0.8, 0.7, 0.6, 1.0};
	GLfloat light0_specular[] = {1.0, 1.0, 1.0, 1.0};
 
	GLfloat material_ambient[] = {0.4, 0.4, 0.4, 1.0};
	GLfloat material_diffuse[] = {0.9, 0.9, 0.9, 1.0};
	GLfloat material_specular[] = {1.0, 1.0, 1.0, 1.0};
	GLfloat material_shininess[] = {25.0};
 
	glShadeModel(GL_SMOOTH);
	glEnable(GL_DEPTH_TEST);
	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);
	glLightfv(GL_LIGHT0, GL_AMBIENT, light0_ambient);
	glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
	glLightfv(GL_LIGHT0, GL_SPECULAR, light0_specular);
	}
 
	void MyDisplay(){
		GLfloat LightPosition[] = {0.0, 0.0, 1.5, 1.0};
		glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
		glPushMatrix();
		glTranslatef(0.0, 0.0, -5.0);
		glPushMatrix();
			glRotatef(SpinAngle, 1.0, 0.0, 0.0);
			glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
			glTranslatef(0.0, 0.0, 1.5);
			glDisable(GL_LIGHTING);
			glColor3f(0.9, 0.9, 0.9);
			glutWireSphere(0.06, 10, 10);
			glEnable(GL_LIGHTING);
		glPopMatrix();
		glutSolidSphere(1.0, 400, 400);
		glPopMatrix();
		glFlush();
	}
 
	void MyReshape(int w, int h){
		glViewport(0, 0, (GLsizei)w, (GLsizei)h);
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		gluPerspective(40.0, (GLfloat)w/(GLfloat)h, 1.0, 20.0);
		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();
	}
 
	void MyTimer(int Value){			
	SpinAngle = SpinAngle +15;
	glutPostRedisplay();
	glutTimerFunc(50,MyTimer, 1);
    }
 
	void MyMouse(int button, int state, int x, int y){
		switch(button){
		case GLUT_LEFT_BUTTON:
			if(state == GLUT_DOWN){
				SpinAngle = (SpinAngle + 15) % 360;				
				glutPostRedisplay();
			}
			break;
 
 
 
 
		case GLUT_RIGHT_BUTTON:
			if(state == GLUT_DOWN){
				SpinAngle = (SpinAngle + -15) % 360;
				glutPostRedisplay();
			}
 
			break;
		default:
			break;
		}
 
	}
 
 
	int main(int argc, char** argv){
		glutInit(&argc, argv);
		glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
		glutInitWindowSize(500, 500);
		glutInitWindowPosition(100, 100);
		glutCreateWindow("OpenGL Sample Drawing");
		InitLight();
		glutDisplayFunc(MyDisplay);
		glutReshapeFunc(MyReshape);
		glutMouseFunc(MyMouse);
		glutTimerFunc(50, MyTimer, 1);
		glutMainLoop();
		return 0;
	}
 
 
책에도 있는 간단한 예제에 추가를 하는건데요
마우스 왼쪽버튼을 눌렀을 시엔 아래로 한칸 오른쪽 버튼을 눌렀을 시엔 위로한칸이 움직이고
마우스 왼쪽버튼을 계속 누르고 있을시에는 아래쪽으로 계속 회전을 할수 있게 하고싶은데 
타이머 콜백을 준후에 마우스 이벤트를 어떻게 줘야될지 모르겠습니다..
 
초보에게 도움을 주세요 ;ㅅ;