 -- Class: <gtk-viewport>
     Derives from <gtk-bin>.

     This class defines the following slots:

     hadjustment
          The GtkAdjustment that determines the values of the horizontal position for this viewport

     vadjustment
          The GtkAdjustment that determines the values of the vertical position for this viewport

     shadow-type
          Determines how the shadowed box around the viewport is drawn

 -- Signal on <gtk-viewport>: set-scroll-adjustments (arg0 <gtk-adjustment>) (arg1 <gtk-adjustment>)

 -- Function: gtk-viewport-new (hadjustment <gtk-adjustment>) (vadjustment <gtk-adjustment>) =>  (ret <gtk-widget>)
     Creates a new <gtk-viewport> with the given adjustments.

     hadjustment
          horizontal adjustment.

     vadjustment
          vertical adjustment.

     ret
          a new <gtk-viewport>.

 -- Function: gtk-viewport-get-hadjustment (self <gtk-viewport>) =>  (ret <gtk-adjustment>)
 -- Method: get-hadjustment
     Returns the horizontal adjustment of the viewport.

     viewport
          a <gtk-viewport>.

     ret
          the horizontal adjustment of VIEWPORT.

 -- Function: gtk-viewport-get-vadjustment (self <gtk-viewport>) =>  (ret <gtk-adjustment>)
 -- Method: get-vadjustment
     Returns the vertical adjustment of the viewport.

     viewport
          a <gtk-viewport>.

     ret
          the vertical adjustment of VIEWPORT.

 -- Function: gtk-viewport-set-hadjustment (self <gtk-viewport>) (adjustment <gtk-adjustment>)
 -- Method: set-hadjustment
     Sets the horizontal adjustment of the viewport.

     viewport
          a <gtk-viewport>.

     adjustment
          a <gtk-adjustment>.

 -- Function: gtk-viewport-set-vadjustment (self <gtk-viewport>) (adjustment <gtk-adjustment>)
 -- Method: set-vadjustment
     Sets the vertical adjustment of the viewport.

     viewport
          a <gtk-viewport>.

     adjustment
          a <gtk-adjustment>.

 -- Function: gtk-viewport-set-shadow-type (self <gtk-viewport>) (type <gtk-shadow-type>)
 -- Method: set-shadow-type
     Sets the shadow type of the viewport.

     viewport
          a <gtk-viewport>.

     type
          the new shadow type.

 -- Function: gtk-viewport-get-shadow-type (self <gtk-viewport>) =>  (ret <gtk-shadow-type>)
 -- Method: get-shadow-type
     Gets the shadow type of the <gtk-viewport>. See gtk-viewport-set-shadow-type.

     viewport
          a <gtk-viewport>

     ret
          the shadow type