problem with glutKeyboardFunc(keyboard);

void MFCOpenGL:isplay(void)
{

glDrawBuffer(GL_FRONT_LEFT);
//glColor3f(1, 1, 1);
glClearColor(1,1,1,1);//set the background color to black
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);

glBegin(GL_QUADS);
glColor3d(1.0, 0.0, 0.0);
glVertex2d(0.0, 0.0);
glVertex2d(2.4, -0.35);
glVertex2d(2.45, 2.5);
glVertex2d(0.0, 2.7);
glEnd();


glBegin(GL_QUADS);
glColor3d(0.0, 0.0, 1.0);
glVertex2d(-2.5, -0.;
glVertex2d(0.0, 0.0);
glVertex2d(0.0, 2.7);
glVertex2d(-2.5, 2.0);
glEnd();


glBegin(GL_QUADS);
glColor3d(0.0, 0.0, 0.0);
glVertex2d(-2.5, -0.;
glVertex2d(-0.3, -2.0);
glVertex2d(2.4, -0.35);
glVertex2d(0.0,0.0);
glEnd();

glColor3f(0.0, 1.0, 1.0);
glutSolidCube(0.5);
glutSwapBuffers();
glutPostRedisplay();//end of insertion
}

void MFCOpenGL::Resize(int width,int height)
{
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0, (float)width / (float)height, 0.1, 1000.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// Set the viewing position and orientation
gluLookAt(
0.0, 0.0,10.0, // eye location
0.0, 0.0, 1.0, // center location
0.0, 1.0, 0.0); // up vector
}

void MFCOpenGL::keyboard(int key, int x, int y)
{
switch (key)
{
case 'a':
case 'A':
glTranslatef(-1.0, 0.0, 0.0);

break;

case 'd':
case 'D':
glTranslatef(1.0, 0.0, 0.0);
break;

case 'w':
case 'W':
glTranslatef(0.0, 0.0, 1.0);
break;

case 's':
case 'S':
glTranslatef(0.0, 0.0, -1.0);
break;
}
}