Gets the value set by gtk_text_view_set_pixels_below_lines().
The line space is the sum of the value returned by this function and the value returned by gtk_text_view_get_pixels_above_lines().
default number of blank pixels below paragraphs
See Implementation
Gets the value set by gtk_text_view_set_pixels_below_lines().
The line space is the sum of the value returned by this function and the value returned by gtk_text_view_get_pixels_above_lines().