UF_UI_set_sel_mask( )这个函数有个参数是UF_UI_selection_p_t select_
,不晓得该如何给它赋初值,还有help上讲"For UF_UI_select_with_single_dialog and UF_UI_select_with_class_dialog,
this function can only be called from the selection initialization procedure.
",这句话中的selection initialization procedure何义啊?多谢!