Problem with wxDC::CrossHair

[Alejandro]

Hi,
    I'm using wxDC::CrossHair in a window. When I draw the cross near 
one of  the horizontal edges of the window, the horizontal line of the 
cross does not reach the opposite edge.

    For example:

     wxDC::CrossHair(1,100);

with the window maximized, the horizontal line is some pixels short on 
the right side.

Is that a bug?

Thanks.
Alejandro.