Sets @start_path and @end_path to be the first and last visible path. Note that there may be invisible paths in between.
The paths should be freed with gtk_tree_path_free() after use.
Return location for start of region, or %NULL.
Return location for end of region, or %NULL.
%TRUE, if valid paths were placed in @start_path and @end_path.
2.8
See Implementation
Sets @start_path and @end_path to be the first and last visible path. Note that there may be invisible paths in between.
The paths should be freed with gtk_tree_path_free() after use.