status = dest:SetFitH(top)
dest:SetFitH() defines the appearance of a page to magnifying to fit the width of the page within the window and
setting the top position of the page to the value of the top parameter.
#HPDF_INVALID_DESTINATION - An invalid destination handle was set.
#HPDF_INVALID_PARAMETER - An invalid value was set at either left, top or zoom parameter.