a cairo_t
a state
the type of shadow to draw
the widget. [allow-none]
a style detail. [allow-none]
x origin of the rectangle to draw the diamond in
y origin of the rectangle to draw the diamond in
width of the rectangle to draw the diamond in
height of the rectangle to draw the diamond in
Warning gtk_paint_diamond has been deprecated since version 3.0 and should not be used in newly-written code. Use cairo instead Draws a diamond in the given rectangle on window using the given parameters.