a cairo_t
X origin of the rectangle
Y origin of the rectangle
rectangle width
rectangle height
side where the gap is
initial coordinate (X or Y depending on gap_side) for the gap
end coordinate (X or Y depending on gap_side) for the gap
Deprecated: Use gtk_render_frame() instead. Themes can create gaps by omitting borders via CSS.
3.0
Renders a frame around the rectangle defined by (x, y, width, height), leaving a gap on one side. xy0_gap and xy1_gap will mean X coordinates for GTK_POS_TOP and GTK_POS_BOTTOM gap sides, and Y coordinates for GTK_POS_LEFT and GTK_POS_RIGHT.
Typical rendering of a frame with a gap: