make-gdk-geometry (&key min-width min-height max-width max-height base-width base-height width-increment height-increment  min-aspect max-aspect win-gravity)

min-width -- a :int with the minimum width of window or -1 to use requisition, with gtk-window only
min-height -- a :int with minimum height of window or -1 to use requisition, with gtk-window only
max-width -- a :int with maximum width of window or -1 to use requisition, with gtk-window only
max-height -- a :int with maximum height of window or -1 to use requisition, with gtk-window only
base-width -- a :int with allowed window widths are base-width + width-inc * N where N is any integer, -1 is allowed with gtk-window
base-height -- a :int with allowed window widths are base-height + height-inc * N where N is any integer, -1 allowed with gtk-window
width-increment -- a :int with width resize increment
height-increment -- a :int with height resize increment
min-aspect -- a :double with minimum width/height ratio
max-aspect -- a :double with maximum width/height ratio
win-gravity -- window gravity of type gdk-gravity, see the function gtk-window-gravity

Creates a gdk-geometry structure.