Simple Tree:使用cl_gui_simple_tree类创建只有单个节点Tree；
List Tree:使用cl_gui_list_tree类创建每个节点有多个entry，从左到右；
Column Tree:cl_gui_column_tree类自定义拥有多列的节点；
示例：SAPSIMPLE_TREE_CONTROL_DEMO；
示例：SAPTLIST_TREE_CONTROL_DEMO；
示例：SAPCOLUMN_TREE_CONTROL_DEMO；
示例：SAPSIMPLE_TREE_DRAG_DROP_DEMO；
示例：RSDEMO_DRAG_DROP_TREE_MULTI；
示例1：cl_gui_simple_tree
CLASS c8_event_handler DEFINITION. PUBLIC SECTION. CLASS-DATA:gv_string TYPE string. CLASS-METHODS:m_node_double_click FOR EVENT node_double_click OF cl_gui_simple_tree IMPORTING node_key. CLASS-METHODS:m_expand_no_children FOR EVENT expand_no_children OF cl_gui_simple_tree IMPORTING node_key sender. ENDCLASS. CLASS c8_event_handler IMPLEMENTATION. METHOD:m_node_double_click. gv_string = ‘node double click node key:‘ && node_key. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_expand_no_children. DATA:lt_node TYPE TABLE OF mtreesnode. DATA:ls_node LIKE LINE OF lt_node. IF node_key = ‘Item1‘. "添加节点 CLEAR ls_node. ls_node-node_key = ‘New1‘. ls_node-relatkey = ‘Item1‘. ls_node-relatship = cl_gui_column_tree=>relat_last_child. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. ls_node-text = ‘Node New1‘. APPEND ls_node TO lt_node. CLEAR ls_node. ls_node-node_key = ‘New2‘. ls_node-relatkey = ‘Item1‘. ls_node-relatship = cl_gui_column_tree=>relat_last_child. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. ls_node-text = ‘Node New2‘. APPEND ls_node TO lt_node. sender->add_nodes( EXPORTING node_table = lt_node table_structure_name = ‘MTREESNODE‘ ). ENDIF. gv_string = ‘expand no children node key:‘ && node_key. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. ENDCLASS. CLASS c8_simple_tree DEFINITION. PUBLIC SECTION. DATA:lo_simple_tree TYPE REF TO cl_gui_simple_tree. METHODS:m_init_tree. "创建节点 METHODS:m_creat_node. "注册事件 METHODS:m_regist_event. ENDCLASS. CLASS c8_simple_tree IMPLEMENTATION. METHOD:m_init_tree. "创建tree CREATE OBJECT lo_simple_tree EXPORTING parent = cl_gui_container=>default_screen node_selection_mode = cl_gui_column_tree=>node_sel_mode_single. "创建node me->m_creat_node( ). "注册事件 me->m_regist_event( ). ENDMETHOD. METHOD m_creat_node. DATA:lt_node TYPE TABLE OF mtreesnode. DATA:ls_node LIKE LINE OF lt_node. "添加节点 ls_node-node_key = ‘Root‘. ls_node-isfolder = ‘X‘. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. ls_node-hidden = ‘‘. ls_node-disabled = ‘‘. ls_node-text = ‘Root Node‘. APPEND ls_node TO lt_node. CLEAR ls_node. ls_node-node_key = ‘Item1‘. ls_node-relatkey = ‘Root‘. ls_node-relatship = cl_gui_column_tree=>relat_last_child. ls_node-isfolder = ‘X‘. ls_node-expander = ‘X‘. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. ls_node-text = ‘Item1 Node‘. APPEND ls_node TO lt_node. lo_simple_tree->add_nodes( EXPORTING node_table = lt_node table_structure_name = ‘MTREESNODE‘ ). ENDMETHOD. METHOD m_regist_event. DATA:lt_events TYPE cntl_simple_events. DATA:ls_events TYPE cntl_simple_event. ls_events-eventid = cl_gui_column_tree=>eventid_node_double_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_expand_no_children. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. "设置事件 lo_simple_tree->set_registered_events( events = lt_events ). SET HANDLER c8_event_handler=>m_node_double_click FOR lo_simple_tree. SET HANDLER c8_event_handler=>m_expand_no_children FOR lo_simple_tree. ENDMETHOD. ENDCLASS.
示例2：cl_gui_list_tree
CLASS c8_event_handler DEFINITION. PUBLIC SECTION. CLASS-DATA:gv_string TYPE string. CLASS-METHODS:m_node_double_click FOR EVENT node_double_click OF cl_gui_list_tree IMPORTING node_key. CLASS-METHODS:m_header_click FOR EVENT header_click OF cl_gui_list_tree IMPORTING header_name. CLASS-METHODS:m_expand_no_children FOR EVENT expand_no_children OF cl_gui_list_tree IMPORTING node_key sender. CLASS-METHODS:m_item_double_click FOR EVENT item_double_click OF cl_gui_list_tree IMPORTING node_key item_name. CLASS-METHODS:m_button_click FOR EVENT button_click OF cl_gui_list_tree IMPORTING node_key item_name. CLASS-METHODS:m_link_click FOR EVENT link_click OF cl_gui_list_tree IMPORTING node_key item_name. CLASS-METHODS:m_checkbox_change FOR EVENT checkbox_change OF cl_gui_list_tree IMPORTING node_key item_name checked. ENDCLASS. CLASS c8_event_handler IMPLEMENTATION. METHOD:m_node_double_click. gv_string = ‘node double click node key:‘ && node_key. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_header_click. gv_string = ‘header name:‘ && header_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_expand_no_children. DATA:lt_node TYPE treev_ntab. DATA:ls_node TYPE treev_node. DATA:lt_item TYPE TABLE OF mtreeitm. DATA:ls_item TYPE mtreeitm. IF node_key = ‘Item2‘. DO 2 TIMES. "Item2添加New21,New22子节点 CLEAR ls_node. ls_node-node_key = ‘New2‘ && sy-index. ls_node-relatkey = ‘Item2‘. ls_node-relatship = cl_gui_list_tree=>relat_last_child. APPEND ls_node TO lt_node. "设置new2的text CLEAR ls_item. ls_item-node_key = ‘New2‘ && sy-index. ls_item-item_name = sy-index. "item种类 ls_item-class = cl_gui_list_tree=>item_class_text. "字体ITEM_FONT_DEFAULT,ITEM_FONT_FIXED,ITEM_FONT_PROP ls_item-font = cl_gui_list_tree=>item_font_prop. "align_xxx,left,auto,right,center ls_item-alignment = cl_gui_list_tree=>align_left. ls_item-t_image = ‘@B1@‘."图标 ls_item-length = 5. "长度 ls_item-usebgcolor = ‘X‘."是否使用bgcolor ls_item-text = ‘text‘ && sy-index. APPEND ls_item TO lt_item. "设置new2的text CLEAR ls_item. ls_item-node_key = ‘New2‘ && sy-index. ls_item-item_name = sy-index + 1. "item种类 ls_item-class = cl_gui_list_tree=>item_class_text. "align_xxx,left,auto,right,center ls_item-alignment = cl_gui_list_tree=>align_left. ls_item-t_image = ‘@B1@‘."图标 ls_item-length = 5. "长度 ls_item-usebgcolor = ‘X‘."是否使用bgcolor ls_item-text = ‘text‘ && sy-index. APPEND ls_item TO lt_item. ENDDO. sender->add_nodes_and_items( EXPORTING node_table = lt_node item_table = lt_item item_table_structure_name = ‘MTREEITM‘ ). ENDIF. gv_string = ‘expand no children node key:‘ && node_key. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_item_double_click. gv_string = ‘item double click node key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_button_click. gv_string = ‘butto click key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_link_click. gv_string = ‘link click node key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_checkbox_change. gv_string = ‘checkbox change node key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. ENDCLASS. CLASS c8_list_tree DEFINITION. PUBLIC SECTION. DATA:lo_list_tree TYPE REF TO cl_gui_list_tree. METHODS:m_init_tree. METHODS:m_creat_node. METHODS:m_regist_event. ENDCLASS. CLASS c8_list_tree IMPLEMENTATION. METHOD:m_init_tree. "创建tree CREATE OBJECT lo_list_tree EXPORTING parent = cl_gui_container=>default_screen node_selection_mode = cl_gui_column_tree=>node_sel_mode_single item_selection = ‘X‘ with_headers = ‘‘. "创建node me->m_creat_node( ). "注册事件 me->m_regist_event( ). ENDMETHOD. METHOD m_creat_node. DATA:lt_node TYPE treev_ntab. DATA:ls_node TYPE treev_node. DATA:lt_item TYPE TABLE OF mtreeitm. DATA:ls_item TYPE mtreeitm. "添加根节点 ls_node-node_key = ‘Root‘. ls_node-isfolder = ‘X‘. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. ls_node-hidden = ‘‘. ls_node-disabled = ‘‘. APPEND ls_node TO lt_node. DO 2 TIMES. "Root添加Item1,2子节点 CLEAR ls_node. ls_node-node_key = ‘Item‘ && sy-index. ls_node-relatkey = ‘Root‘. ls_node-relatship = cl_gui_list_tree=>relat_last_child. ls_node-isfolder = ‘X‘. ls_node-expander = ‘X‘. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. APPEND ls_node TO lt_node. "Item1添加New1,New2子节点 CLEAR ls_node. ls_node-node_key = ‘New‘ && sy-index. ls_node-relatkey = ‘Item1‘. ls_node-relatship = cl_gui_list_tree=>relat_last_child. APPEND ls_node TO lt_node. ENDDO. "设置root text ls_item-node_key = ‘Root‘. ls_item-item_name = ‘1‘. ls_item-class = cl_gui_list_tree=>item_class_text. ls_item-length = 10. "长度 ls_item-text = ‘Root text‘. APPEND ls_item TO lt_item. DO 2 TIMES. "设置Item1,2的text CLEAR ls_item. ls_item-node_key = ‘Item‘ && sy-index. ls_item-item_name = ‘1‘. ls_item-class = cl_gui_list_tree=>item_class_text. ls_item-length = 10. "长度 ls_item-text = ls_item-node_key && ‘ text‘. APPEND ls_item TO lt_item. ENDDO. DO 2 TIMES. "设置new1的text CLEAR ls_item. ls_item-node_key = ‘New‘ && sy-index. ls_item-item_name = ‘1‘. "item种类 ls_item-class = cl_gui_list_tree=>item_class_text. "字体ITEM_FONT_DEFAULT,ITEM_FONT_FIXED,ITEM_FONT_PROP ls_item-font = cl_gui_list_tree=>item_font_prop. ls_item-disabled = ‘‘."是否可用 ls_item-editable = ‘‘."是否可编辑 ls_item-hidden = ‘‘. "是否隐藏 "align_xxx,left,auto,right,center ls_item-alignment = cl_gui_list_tree=>align_left. ls_item-t_image = ‘@B1@‘."图标 ls_item-chosen = ‘‘."是否可选 ls_item-togg_right = ‘‘. "是否toggle ls_item-style = cl_gui_list_tree=>style_emphasized. ls_item-length = 5. "长度 ls_item-length_pix = ‘‘."是否使用pix ls_item-ignoreimag = ‘‘. "是否忽略imag ls_item-usebgcolor = ‘‘."是否使用bgcolor ls_item-txtisqinfo = ‘‘. "是否text为qinfo ls_item-text = ‘text‘ && sy-index. APPEND ls_item TO lt_item. "设置new1的button CLEAR ls_item. ls_item-node_key = ‘New‘ && sy-index. ls_item-item_name = ‘2‘. "item种类 ls_item-class = cl_gui_list_tree=>item_class_button. ls_item-length = 10. "长度 ls_item-text = ‘button‘ && sy-index. APPEND ls_item TO lt_item. "设置new1的link CLEAR ls_item. ls_item-node_key = ‘New‘ && sy-index. ls_item-item_name = ‘3‘. "item种类 ls_item-class = cl_gui_list_tree=>item_class_link. ls_item-length = 10. "长度 ls_item-text = ‘link‘ && sy-index. APPEND ls_item TO lt_item. "设置new1的link CLEAR ls_item. ls_item-node_key = ‘New‘ && sy-index. ls_item-item_name = ‘4‘. "item种类 ls_item-class = cl_gui_list_tree=>item_class_checkbox. ls_item-length = 1. "长度 ls_item-txtisqinfo = ‘X‘. "qinfo ls_item-editable = ‘X‘."是否可编辑 ls_item-text = ‘checkbox‘ && sy-index. APPEND ls_item TO lt_item. ENDDO. lo_list_tree->add_nodes_and_items( EXPORTING node_table = lt_node item_table = lt_item item_table_structure_name = ‘MTREEITM‘ ). ENDMETHOD. METHOD m_regist_event. DATA:lt_events TYPE cntl_simple_events. DATA:ls_events TYPE cntl_simple_event. ls_events-eventid = cl_gui_column_tree=>eventid_node_double_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_header_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_expand_no_children. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_item_double_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_button_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_link_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_checkbox_change. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. "设置事件 lo_list_tree->set_registered_events( events = lt_events ). SET HANDLER c8_event_handler=>m_node_double_click FOR lo_list_tree. SET HANDLER c8_event_handler=>m_header_click FOR lo_list_tree. SET HANDLER c8_event_handler=>m_expand_no_children FOR lo_list_tree. SET HANDLER c8_event_handler=>m_item_double_click FOR lo_list_tree. SET HANDLER c8_event_handler=>m_button_click FOR lo_list_tree. SET HANDLER c8_event_handler=>m_link_click FOR lo_list_tree. SET HANDLER c8_event_handler=>m_checkbox_change FOR lo_list_tree. ENDMETHOD. ENDCLASS.
示例3：cl_gui_column_tree
CLASS c8_event_handler DEFINITION. PUBLIC SECTION. CLASS-DATA:gv_string TYPE string. CLASS-METHODS:m_node_double_click FOR EVENT node_double_click OF cl_gui_column_tree IMPORTING node_key. CLASS-METHODS:m_header_click FOR EVENT header_click OF cl_gui_column_tree IMPORTING header_name. CLASS-METHODS:m_expand_no_children FOR EVENT expand_no_children OF cl_gui_column_tree IMPORTING node_key sender. CLASS-METHODS:m_item_double_click FOR EVENT item_double_click OF cl_gui_column_tree IMPORTING node_key item_name. CLASS-METHODS:m_button_click FOR EVENT button_click OF cl_gui_column_tree IMPORTING node_key item_name. CLASS-METHODS:m_link_click FOR EVENT link_click OF cl_gui_column_tree IMPORTING node_key item_name. CLASS-METHODS:m_checkbox_change FOR EVENT checkbox_change OF cl_gui_column_tree IMPORTING node_key item_name checked. ENDCLASS. CLASS c8_event_handler IMPLEMENTATION. METHOD:m_node_double_click. gv_string = ‘node double click node key:‘ && node_key. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_header_click. gv_string = ‘header name:‘ && header_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_expand_no_children. DATA:lt_node TYPE treev_ntab. DATA:ls_node TYPE treev_node. DATA:lt_item TYPE TABLE OF mtreeitm. DATA:ls_item TYPE mtreeitm. IF node_key = ‘Item1‘. "添加节点 CLEAR ls_node. ls_node-node_key = ‘New1‘. ls_node-relatkey = ‘Item1‘. ls_node-relatship = cl_gui_column_tree=>relat_last_child. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. APPEND ls_node TO lt_node. CLEAR ls_node. ls_node-node_key = ‘New2‘. ls_node-relatkey = ‘Item1‘. ls_node-relatship = cl_gui_column_tree=>relat_last_child. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. APPEND ls_node TO lt_node. "设置column item ls_item-node_key = ‘New1‘. ls_item-item_name = ‘Col1‘. ls_item-class = cl_gui_column_tree=>item_class_text. ls_item-text = ‘New1->col1‘. APPEND ls_item TO lt_item. ls_item-node_key = ‘New1‘. ls_item-item_name = ‘Col2‘. ls_item-class = cl_gui_column_tree=>item_class_text. ls_item-text = ‘New1->col2‘. APPEND ls_item TO lt_item. ls_item-node_key = ‘New1‘. ls_item-item_name = ‘Col3‘. ls_item-class = cl_gui_column_tree=>item_class_text. ls_item-text = ‘New1->col3‘. APPEND ls_item TO lt_item. sender->add_nodes_and_items( EXPORTING node_table = lt_node item_table = lt_item item_table_structure_name = ‘MTREEITM‘ ). ENDIF. gv_string = ‘expand no children node key:‘ && node_key. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_item_double_click. gv_string = ‘item double click node key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_button_click. gv_string = ‘butto click key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_link_click. gv_string = ‘link click node key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. METHOD:m_checkbox_change. gv_string = ‘checkbox change node key:‘ && node_key && ‘item name:‘ && item_name. MESSAGE gv_string TYPE ‘I‘. ENDMETHOD. ENDCLASS. CLASS c8_column_tree DEFINITION. PUBLIC SECTION. DATA:lo_col_tree TYPE REF TO cl_gui_column_tree. DATA:ls_header TYPE treev_hhdr. METHODS:m_init_tree. METHODS:m_creat_col. METHODS:m_creat_node. METHODS:m_regist_event. ENDCLASS. CLASS c8_column_tree IMPLEMENTATION. METHOD:m_init_tree. ls_header-heading = ‘heading‘. ls_header-width = 30. ls_header-tooltip = ‘this header‘. ls_header-t_image = ‘@B1@‘. "创建tree CREATE OBJECT lo_col_tree EXPORTING parent = cl_gui_container=>default_screen node_selection_mode = cl_gui_column_tree=>node_sel_mode_single item_selection = ‘X‘ hierarchy_column_name = ‘Col1‘ hierarchy_header = ls_header. "创建column me->m_creat_col( ). "创建node me->m_creat_node( ). "注册事件 me->m_regist_event( ). ENDMETHOD. METHOD:m_creat_col. "添加列 lo_col_tree->add_column( EXPORTING name = ‘Col2‘ alignment = cl_gui_column_tree=>align_right width = 20 header_image = ‘@B1@‘ header_text = ‘Column2‘ header_tooltip = ‘this column2‘ ). "插入列 lo_col_tree->insert_column( EXPORTING name = ‘Col3‘ predecessor_column = ‘Col2‘ width = 20 header_image = ‘@B2@‘ header_text = ‘Column3‘ header_tooltip = ‘this column3‘ ). "删除列 "delete_column "更新列 "update_column ENDMETHOD. METHOD m_creat_node. DATA:lt_node TYPE treev_ntab. DATA:ls_node TYPE treev_node. DATA:lt_item TYPE TABLE OF mtreeitm. DATA:ls_item TYPE mtreeitm. "添加节点 ls_node-node_key = ‘Root‘. ls_node-isfolder = ‘X‘. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. ls_node-hidden = ‘‘. ls_node-disabled = ‘‘. APPEND ls_node TO lt_node. CLEAR ls_node. ls_node-node_key = ‘Item1‘. ls_node-relatkey = ‘Root‘. ls_node-relatship = cl_gui_column_tree=>relat_last_child. ls_node-isfolder = ‘X‘. ls_node-expander = ‘X‘. ls_node-n_image = ‘@FO@‘. ls_node-exp_image = ‘@W5@‘. APPEND ls_node TO lt_node. "设置column item ls_item-node_key = ‘Root‘. ls_item-item_name = ‘Col1‘. ls_item-class = cl_gui_column_tree=>item_class_text. ls_item-text = ‘Root->col1‘. APPEND ls_item TO lt_item. ls_item-node_key = ‘Root‘. ls_item-item_name = ‘Col2‘. ls_item-class = cl_gui_column_tree=>item_class_button. ls_item-text = ‘Root->col2‘. APPEND ls_item TO lt_item. ls_item-node_key = ‘Root‘. ls_item-item_name = ‘Col3‘. ls_item-class = cl_gui_column_tree=>item_class_link. ls_item-text = ‘Root->col3‘. APPEND ls_item TO lt_item. ls_item-node_key = ‘Item1‘. ls_item-item_name = ‘Col1‘. ls_item-class = cl_gui_column_tree=>item_class_text. ls_item-text = ‘Item1->col1‘. APPEND ls_item TO lt_item. ls_item-node_key = ‘Item1‘. ls_item-item_name = ‘Col2‘. ls_item-class = cl_gui_column_tree=>item_class_button. ls_item-text = ‘Item1->col2‘. APPEND ls_item TO lt_item. ls_item-node_key = ‘Item1‘. ls_item-item_name = ‘Col3‘. ls_item-editable = ‘X‘. ls_item-class = cl_gui_column_tree=>item_class_checkbox. ls_item-text = ‘Item1->col3‘. APPEND ls_item TO lt_item. lo_col_tree->add_nodes_and_items( EXPORTING node_table = lt_node item_table = lt_item item_table_structure_name = ‘MTREEITM‘ ). ENDMETHOD. METHOD m_regist_event. DATA:lt_events TYPE cntl_simple_events. DATA:ls_events TYPE cntl_simple_event. ls_events-eventid = cl_gui_column_tree=>eventid_node_double_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_header_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_expand_no_children. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_item_double_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_button_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_link_click. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. ls_events-eventid = cl_gui_column_tree=>eventid_checkbox_change. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. "设置事件 lo_col_tree->set_registered_events( events = lt_events ). SET HANDLER c8_event_handler=>m_node_double_click FOR lo_col_tree. SET HANDLER c8_event_handler=>m_header_click FOR lo_col_tree. SET HANDLER c8_event_handler=>m_expand_no_children FOR lo_col_tree. SET HANDLER c8_event_handler=>m_item_double_click FOR lo_col_tree. SET HANDLER c8_event_handler=>m_button_click FOR lo_col_tree. SET HANDLER c8_event_handler=>m_link_click FOR lo_col_tree. SET HANDLER c8_event_handler=>m_checkbox_change FOR lo_col_tree. ENDMETHOD. ENDCLASS.
示例：节点上右键菜单
1.创建对应事件响应方法
CLASS-METHODS:m_node_context_menu_request FOR EVENT node_context_menu_request OF cl_gui_simple_tree IMPORTING node_key menu. CLASS-METHODS:m_node_context_menu_select FOR EVENT node_context_menu_select OF cl_gui_simple_tree IMPORTING node_key fcode.
2.方法实现
"创建menu METHOD m_node_context_menu_request. DATA:lo_menu TYPE REF TO cl_ctmenu. CREATE OBJECT lo_menu. lo_menu->add_function( EXPORTING fcode = ‘FUNC1‘ text = ‘function 1‘ icon = ‘@B1@‘ ). lo_menu->add_function( EXPORTING fcode = ‘FUNC2‘ text = ‘function 2‘ icon = ‘@B1@‘ ). menu->add_function( EXPORTING fcode = ‘FUNC‘ text = ‘function‘ icon = ‘@B3@‘ ). menu->add_submenu( EXPORTING menu = lo_menu text = ‘menu1‘ icon = ‘@B2@‘ ). ENDMETHOD. METHOD m_node_context_menu_select. DATA:lv_str TYPE string. lv_str = ‘node_key:‘ && node_key && ‘function:‘ && fcode. MESSAGE lv_str TYPE ‘I‘. ENDMETHOD.
3.注册事件，以及设置handler
ls_events-eventid = cl_gui_column_tree=>eventid_node_context_menu_req. ls_events-appl_event = ‘‘. APPEND ls_events TO lt_events. "设置事件 lo_simple_tree->set_registered_events( events = lt_events ).
设置事件Handler
SET HANDLER c8_event_handler=>m_node_context_menu_request FOR lo_simple_tree. SET HANDLER c8_event_handler=>m_node_context_menu_select FOR lo_simple_tree.
ABAP Control Framework(9): Tree
原文：https://www.cnblogs.com/tangToms/p/14772095.html