a #GtkStyleContext
icon size (#GtkIconSize). A size of (GtkIconSize)-1 means render at the size of the source and don’t scale.
the window scale to render for
#GdkWindow to optimize drawing for, or null
a #cairo_surface_t to be displayed
Deprecated: Use #GtkIconTheme instead.
Renders an icon using gtk.global.renderIconPixbuf and converts it to a cairo surface.
This function never returns null; if the icon can’t be rendered (perhaps because an image file fails to load), a default "missing image" icon will be returned instead.