Stencil buffer usage

[Newbie]

I am trying to learn the usage of stencil buffer. I try to create reflection of an object on a floor.
But while i introduce the blue block the reflected object is not rendered.

With no blue block I see a solid object, floor and the object which is supposed to be the reflection of the first object appears partly hidden behind the floor!!

Below is the code. Please help me.
…

glEnable(GL_STENCIL_TEST);
glColorMask(0, 0, 0, 0);
glDisable(GL_DEPTH_TEST);
glStencilFunc(GL_ALWAYS, 1, 1);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
draw_floor();

glColorMask(1, 1, 1, 1);
glEnable(GL_DEPTH_TEST);

glStencilFunc(GL_EQUAL, 1, 1);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);

…

[Newbie]

I could solve the problem !!

I was viewing from a wrong angle so i could not see the reflected image.

Thank you.