pen width (CreatePen) doesn't work

Created an attachment (id=2032)
test case illustrating pen width bug

I noticed a bug in ReactOS concerning Pens. When using something like CreatePen(PS_SOLID, 10, RGB(0,0,0)); the resulting pen won't be painting with a width of 10 pixels as requested but only with default 1 pixel.

I've attached a (hopefully helpful) sample program which shows the issue exactly. The lines shown on the window should get bigger from left to right, what they do just fine on windows. On ReactOS however, they all appear to be of the same thinness.

As I don't know the internals of ReactOS I can't track it down any further. Hope this is enough information. Bug appears in livecd-29784-rel.iso downloaded from svn.reactos.org/iso.