i have written a opengl code using glutKeyboardFunc function so that i can control the shape of the cylinder i have created here from keyboard. but this code is not working . here is the code #include<stdio.h> #include<GL\glut.h> #include<windows.h> void init() { glClearColor(.1,.10,.10,0); } void reshape(int w, int h) { glViewport(0,0,w,h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(50,1,0,15); glMatrixMode(GL_MODELVIEW); } void drawaxis() { glBegin(GL_LINES); glColor3f(0.0, 1.0, 0.0); glVertex2f(2.0, 0.0); glColor3f(1.0, 0.0, 0.0); glVertex2f(-2.0, 0.0); glColor3f(0.0, 0.0, 1.0); glVertex2f(0.0, 2.0); glColor3f(1.0, 1.0, 0.0); glVertex2f(0.0, -2.0); glEnd(); } void Cylinder (double height, double radius, int slices, int stacks) { GLUquadricObj* cyl; cyl = gluNewQuadric(); gluQuadricDrawstyle(cyl, GLU_LINE); gluCylinder(cyl, 1, 1, 3, 6, 6); } void square() { glBegin(GL_POLYGON); glVertex3d(-0.25,0.25,0); glVertex3d(0.25,0.25,0); glVertex3d(0.25,-0.25,0); glVertex3d(-0.25,-0.25,0); glEnd(); } //glTranslated(0,0,-5); //glRotated(10,0,1,0); void render() { glClear(GL_COLOR_BUFFER_BIT); glColor3d(1,0,1); glLoadIdentity(); gluLookAt(0,0,5,0,0,0,0,1,0); glTranslated(0,0,-2); glRotated(30,0,1,0); //glutWireCube(1); drawaxis(); Cylinder(100, 10, 2, 2); glFlush(); } void keyboard(unsigned char key, int x, int y) { switch (key) { case 'u': case 'U': glRotatef(3.0, 1.0, 0.0, 0.0); // rotate up break; case 'd': case 'D': glRotatef(-3.0, 1.0, 0.0, 0.0); // rotate down break; case 'l': case 'L': glRotatef(3.0, 0.0, 1.0, 0.0); // rotate left break; case 'r': case 'R': glRotatef(-3.0, 0.0, 1.0, 0.0); // rotate right } glutPostRedisplay(); } int main(int argc, char* argv[]) { glutInit(&argc,argv); glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); glutInitWindowSize(300, 300); glutInitWindowPosition(100,100); glutCreateWindow("hello window"); init(); glutDisplayFunc(render); glutReshapeFunc(reshape); glutKeyboardFunc(keyboard); glutMainLoop(); return 0; } can someone tell me what is wrong with this code.

Quote:Original post by abt
but this code is not working .

How so? What behavior do you expect, and what behavior are you getting? What steps have you taken to debug the problem yourself?

We can help you a lot more easily if you provide us with a more detailed description of the problem.