Warning
gtk_icon_source_set_direction has been deprecated since version 3.10 and should not be used in newly-written code. Use GtkIconTheme instead.
Sets the text direction this icon source is intended to be used
with.
Setting the text direction on an icon source makes no difference
if the text direction is wildcarded. Therefore, you should usually
call gtk_icon_source_set_direction_wildcarded() to un-wildcard it
in addition to calling this function.
Warning gtk_icon_source_set_direction has been deprecated since version 3.10 and should not be used in newly-written code. Use GtkIconTheme instead. Sets the text direction this icon source is intended to be used with. Setting the text direction on an icon source makes no difference if the text direction is wildcarded. Therefore, you should usually call gtk_icon_source_set_direction_wildcarded() to un-wildcard it in addition to calling this function.