pub unsafe extern "C" fn gtk_color_chooser_add_palette(
chooser: *mut GtkColorChooser,
orientation: GtkOrientation,
colors_per_line: c_int,
n_colors: c_int,
colors: *mut GdkRGBA,
)
pub unsafe extern "C" fn gtk_color_chooser_add_palette(
chooser: *mut GtkColorChooser,
orientation: GtkOrientation,
colors_per_line: c_int,
n_colors: c_int,
colors: *mut GdkRGBA,
)