Sets the name of the icon theme that the GtkIconTheme object uses overriding system configuration. This function cannot be called on the icon theme objects returned from gtk_icon_theme_get_default() and gtk_icon_theme_get_for_screen(). Since 2.4
name of icon theme to use instead of configured theme, or NULL to unset a previously set custom theme. [allow-none]
See Implementation
Sets the name of the icon theme that the GtkIconTheme object uses overriding system configuration. This function cannot be called on the icon theme objects returned from gtk_icon_theme_get_default() and gtk_icon_theme_get_for_screen(). Since 2.4