a GdkWindow
a state
type of shadow to draw
clip rectangle, or NULL if the output should not be clipped. [allow-none]
the widget. [allow-none]
a style detail. [allow-none]
x origin of the rectangle
y origin of the rectangle
width of the rectangle
width of the rectangle
side in which to leave the gap
starting position of the gap
width of the gap
Draws a shadow around the given rectangle in window using the given style and state and shadow type, leaving a gap in one side.