Picture.XXXResolution = 97 ?

A Windows Seven screen shot @96dpi is displayed as 97 dpi using:

TF_HR.Text = Format(gImage_Pict.HorizontalResolution,"###")

and I do not understand.

BTW: the VerticalResolution too !

Nota: i searched for a 96 dpi image file since… two weeks until I found that one (I’ve done it to recall the size in pixels of a monitor). This is why I am sure of its properties (beside another software confirmed what I already know).