Warning
gtk_color_selection_set_change_palette_hook has been deprecated since version 2.4 and should not be used in newly-written code. This function does not work in multihead environments.
Use gtk_color_selection_set_change_palette_with_screen_hook() instead.
Installs a global function to be called whenever the user tries to
modify the palette in a color selection. This function should save
the new palette contents, and update the GtkSettings property
"gtk-color-palette" so all GtkColorSelection widgets will be modified.
Warning gtk_color_selection_set_change_palette_hook has been deprecated since version 2.4 and should not be used in newly-written code. This function does not work in multihead environments. Use gtk_color_selection_set_change_palette_with_screen_hook() instead. Installs a global function to be called whenever the user tries to modify the palette in a color selection. This function should save the new palette contents, and update the GtkSettings property "gtk-color-palette" so all GtkColorSelection widgets will be modified.