gtk:fixed-put (fixed child x y)

fixed -- a gtk:fixed widget
child -- a gtk:widget child widget to add
x -- a number which is coerced to a double float with the horizontal position to place the child widget at
y -- a number which is coerced to a double float with the vertical position to place the child widget at

Adds a child widget to a fixed widget and assigns a translation transformation to the given x and y coordinates to it.