WDA程式在编写的过程中经常会有弹出框的需求，一般我常会用到的一般有三种：
1)、Message的弹出框用于confirm；
2)、需要自己画控件的window；
3)、弹出一个完整的application。
下面介绍具体的方法和步骤：
1)、Message的弹出框用于confirm；
这种最简单，
APPEND '請確認是否取消！' TO lt_text. wd_this->window_cancel = wd_comp_controller->window_manager->create_popup_to_confirm( text = lt_text button_kind = if_wd_window=>co_buttons_yesno message_type = if_wd_window=>co_msg_type_information close_button = abap_false window_title = 'Confirming' default_button = if_wd_window=>co_button_yes ). wd_this->window_cancel->set_remove_on_close( abap_true ). wd_this->window_cancel->subscribe_to_button_event( button = if_wd_window=>co_button_yes action_name = 'CANCEL_YES' action_view = wd_this->wd_get_api( ) button_text = 'Yes' is_default_button = abap_true ). wd_this->window_cancel->subscribe_to_button_event( button = if_wd_window=>co_button_no action_name = 'CANCEL_NO' action_view = wd_this->wd_get_api( ) button_text = 'No' is_default_button = abap_false ). wd_this->window_cancel->open( ).2)、需要自己画控件的window；
将需要展示的控件在view上画出，然后分配一个window，(本个WDA程式内的window)
调用窗口代码：
IF wd_comp_controller->v_ele_detail_create = 'X'. lt_buttons = wd_comp_controller->window_manager->get_buttons_yesno( default_button = if_wd_window=>co_button_yes ). ELSE. lt_buttons = wd_comp_controller->window_manager->get_buttons_close( ). ENDIF. ls_canc_action-action_name = '*'. lo_window = wd_comp_controller->window_manager->create_and_open_popup( window_name = 'W_ELE' title = 'Modify' message_type = if_wd_window=>co_msg_type_none message_display_mode = if_wd_window=>co_msg_display_mode_selected is_resizable = abap_true buttons = lt_buttons cancel_action = ls_canc_action ). lo_window->set_remove_on_close( remove_on_close = abap_true ). lo_window->open( ).被调用窗口：
DATA: lo_api TYPE REF TO if_wd_view_controller, lo_window_ctrl TYPE REF TO if_wd_window_controller, lo_window TYPE REF TO if_wd_window. lo_api = wd_this->wd_get_api( ). lo_window_ctrl = lo_api->get_embedding_window_ctlr( ). IF lo_window_ctrl IS BOUND. wd_this->vo_window = lo_window_ctrl->get_window( ). IF wd_this->vo_window IS BOUND AND wd_comp_controller->v_ele_detail_create = 'X'. wd_this->vo_window->subscribe_to_button_event( EXPORTING button = if_wd_window=>co_button_yes action_name = 'YES' action_view = lo_api ). wd_this->vo_window->subscribe_to_button_event( EXPORTING button = if_wd_window=>co_button_no action_name = 'NO' action_view = lo_api ). ENDIF. ENDIF.如果是调用另一本WDA程式的话：
首先创建一个view，view上面有控件 ViewContainerUIElement，一般我们需要在被调用WDA的componentcontroller中注册一个返回的event，这样方便我们从被调用WDA返回。
首先在调用WDA View触发调用动作，然后call method do_dynamic_navigation，同时需要call 被调用WDA的interface method去初始化界面( 这里也可以去先更新interface node的数据对象，然后在init事件中初始化界面 )。
lv_tgt_cname = 'YSHWSSS252'. IF wd_this->wd_cpuse_yshwsss252( )->has_active_component( ) IS INITIAL. wd_this->wd_cpuse_yshwsss252( )->create_component( ). ENDIF. TRY. wd_this->wd_get_api( )->do_dynamic_navigation( source_window_name = 'W_MAIN' source_vusage_name = 'V_2ND_USAGE_1' " view use source_plug_name = 'OP_TO_2ND' target_component_name = lv_tgt_cname target_view_name = 'W_MAIN' target_plug_name = 'DEFAULT' target_embedding_position = 'V_2ND/VCU_MAIN' ). CATCH cx_wd_runtime_repository . wd_comp_controller->message_manager->report_error_message( message_text = '訂單詳情畫面錯誤，請聯繫資訊！' ). rv_error = abap_true. ENDTRY. DATA: LO_WDA252 TYPE REF TO YIWCI_SHWSSS252. LO_WDA252 = WD_THIS->WD_CPIFC_YSHWSSS252( ). WD_COMP_CONTROLLER->GS_INTFS-EFORMTYPE = '2'. "退貨訂單 LO_WDA252->SET_EFORM_MODE( LS_INTFS = WD_COMP_CONTROLLER->GS_INTFS ).3)、弹出一个完整的application。
弹出整个application这里其实跟WDA程式已经没有什么关系了，这就是相应URL的超链接。
CALL METHOD lo_window_manager->create_external_window EXPORTING url = lw_url modal = abap_false has_menubar = abap_true is_resizable = abap_true has_scrollbars = abap_true has_statusbar = abap_true has_toolbar = abap_true has_location = abap_true RECEIVING window = lo_window. lo_window->open( ).
