public void set_rules_hint (bool setting)
Warning: set_rules_hint is deprecated since 3.14.
Sets a hint for the theme to draw even/odd rows in the this with different colors, also known as "zebra striping".
This function tells the GTK+ theme that the user interface for your application requires users to read across tree rows and associate cells with one another.
Do not use it just because you prefer the appearance of the ruled tree; that’s a question for the theme. Some themes will draw tree rows in alternating colors even when rules are turned off, and users who prefer that appearance all the time can choose those themes. You should call this function only as a semantic hint to the theme engine that your tree makes alternating colors useful from a functional standpoint (since it has lots of columns, generally).
true if the tree requires reading across rows