gtk-misc-set-alignment (misc xalign yalign)

misc -- a gtk-misc widget
xalign -- a float with the horizontal alignment, from 0.0 (left) to 1.0 (right)
yalign -- a float with the vertical alignment, from 0.0 (top) to 1.0 (bottom)

Sets the alignment of the widget. The function gtk-misc-set-alignment has been deprecated since version 3.14 and should not be used in newly written code. Use gtk-widget alignment and margin properties.