Adds the region name to the widget at position pos in the hierarchy defined in path. See gtk_style_context_add_region(). Note Region names must only contain lowercase letters and '-', starting always with a lowercase letter.
position to modify, -1 for the path head
region name
flags affecting the region Since 3.0
See Implementation
Adds the region name to the widget at position pos in the hierarchy defined in path. See gtk_style_context_add_region(). Note Region names must only contain lowercase letters and '-', starting always with a lowercase letter.