02-2015年sap abap培训教程44课英文flv adkj62讲screen exit

1、 UNIT 3 LESSION 4Screen Exit 屏幕出口This lesson explains how to find a screen exit that is implemented using a customer exit. In addition, it outlines possible uses.本节课解释如何寻找使用客户出口实现的屏幕出口，此外，概述可能的用法。Lesson OverviewAfter completing this lesson, you will be able to: Find and use screen exits that are imp

2、lemented using customer exits完成本课程，我们将能够： 寻找和使用由客户出口实现的屏幕出口Lesson ObjectivesCustomer Exits - Screen ExitScreen exits allow you to make use of reserved sections of a main screen (subscreen areas). You can either display additional information in these areas or input data. You define the necessary inp

3、ut and output fields on a customer screen (subscreen).屏幕出口允许我们利用主屏幕 预留的子屏幕区域，我们可以 在这些区域显示额外的信息或 输入数据，我们在客户屏幕（ 子屏幕）上定义需要的输入字 段和输出字段。Customer Exits - Screen ExitSubscreens are rectangular areas on your screen that are reserved for displaying additional screens at runtime. Another screen (of the subscr

4、een type) can be displayed in each subscreen area at runtime.子屏幕区域是我们屏幕上的长方 形区域，这些区域是在运行时为 显示额外的屏幕预留的，在运行 时，每一个子屏幕区域中能够被 显示另外一个屏幕（子屏幕类型）Customer Exits - Screen ExitYour system determines which screen has to be displayed in a subscreen area at the PBO event. The general syntax is: CALL SUBSCREEN INCL

5、UDING .我们的系统确定在PBO事件中，哪一个子屏幕需要给显示在子屏幕区域中，通常的语法是： CALL SUBSCREEN INCLUDING .Customer Exits - Screen ExitFor each subscreen, PAI and PBO events are processed just as if the subscreen were a normal screen.The sequence of “CALL SUBSCREEN” calls in the flow logic of the main screen determines the sequenc

6、e in which the flow logic of individual subscreen screens is processed.对每一个子屏幕，PAI和PBO事 件被处理，就像这个子屏幕是普 通的屏幕一样被处理。主屏幕流逻辑中的CALL SUBSC REEN调用顺序，确定了个体子 屏幕的流逻辑被处理的顺序。Customer Exits - Screen ExitImportant: The function code can only be processed via the main screen You are not allowed enter a name for a s

7、ubscreens command field. You are not allowed to define GUI statuses for subscreens. No value for next screen may be entered in a subscreens flow control.重要的： 功能码只能通过主屏幕被处理 我们不能为子屏幕的命令字段给名 我们不能为子屏幕定义GUI Status 在子屏幕的流控制中不能有下一个 屏幕Customer Exits - Screen ExitThe SAP application programmer can reserve mu

8、ltiple subscreen areas for a screen.SAP应用程序员可以为一个屏幕预留多个子屏幕区域Customer Exits - Screen ExitThis subscreen is called during flow control of the main screen with the CALL CUSTOMER-SUBSCREEN statement. The name of the subscreen area must be defined without apostrophes. The function group to which the subs

9、creen belongs must be defined statically in apostrophes, but the screen number can be kept variable by using fields; it must always have four places.子屏幕在主屏幕的流控制期间，使用 CALL CUSTOMER-SUBSCREEN语 句被调用，子屏幕区域的名字必须不 带省略号被定义，子屏幕所属的函数 组必须在省略号中被静态定义，但是， 屏幕编码可以通过使用字段被保存在 变量中，变量必须四位长度。Customer Exits - Screen Exi

10、tScreen exit calls are inactive at first, and are skipped when a screen is processed.Only after a corresponding subscreen has been created in an enhancement project, and this project has been activated, will the system process the screen exit.You create subscreens for screen exits in X function grou

11、ps. Normally, these function groups also contain program exits.屏幕出口起初是不活动的，并在屏幕被处 理的时候被跳过。只有在一个增强项目中，相应的子屏幕被 创建，并且这个项目被激活，系统才会处 理这个屏幕出口。我们在X函数组中为屏幕出口创建子屏幕， 通常，这些函数组也包含程序出口。Customer Exits - Screen ExitWhenever the statement CALL CUSTOMER-SUBSCREEN INCLUDING occurs at PBO in the flow control of a scre

12、en, a subscreen is included in the subscreen area defined by SAP application programmers. At this point, all modules called during the PBO event of the subscreen are also processed.当语句CALL CUSTOMER-SUBSCREEN INCLUDING 在屏幕的流控制中的 PBO中执行的时候，一个子屏幕就被包含 在由SAP应用程序员定义的子屏幕区域中， 这时，这个子屏幕PBO事件期间的所有模 块调用也被处理。Cus

13、tomer Exits - Screen ExitThe PAI event of a subscreen is processed when the calling screen calls the subscreen during its PAI event using the statement CALL CUSTOMER-SUBSCREEN .当调用屏幕在其PAI事件中，使用语句CALL CUSTOMER-SUBSCREEN 调用子屏幕的时候，子屏幕的PAI事件被处理。Customer Exits - Screen ExitThe global data of the calling

14、program is not known to the X function group that contains your subscreen; SAP application programmers use program exits to explicitly provide this data to subscreens.对包含我们子屏幕的X函数组来说，调用程序的全局数据是不知道的，SAP应用程序员使用程序出口来显示提供这个数据给子屏幕。Customer Exits - Screen ExitTo facilitate data transport, modules are call

15、ed in the flow control of the calling program that contain program exits for transferring data via interface parameters.The corresponding exit function modules are in the same X function group in which you must create the customer subscreen.为促进数据的传输，在调用程序 的流控制中有被调用的模块，这 些模块包含为通过接口参数传输 数据的程序出口。相应的出口函

16、数模块在我们必须 创建客户子屏幕的同一个X函数组 中。Customer Exits - Screen ExitData must be transported in the other direction as well, since global data from the X function group that contains the user entries on your subscreen is not known to the calling program either. For this reason, SAP application programmers use pr

17、ogram exits to return any data that was changed in the subscreen to the calling program.数据必须同时在另一个方向被传 输，由于包含我们子屏幕上用户 记录的X函数组的全局数据，对 调用程序来说也是不知道的，因 此，SAP应用程序员使用程序出 口来返回子屏幕中任何被修改的 数据给调用程序。Customer Exits - Screen ExitTo do this, the system calls a module at the PAI event of the main screen, which cont

18、ains a program exit that can receive the relevant global data for the X function group.要做这个传输，系统在主屏幕的PAI事件中调用一个模块，这个模块包含能够接收X函数组相关全局数据的程序出口。Customer Exits - Screen ExitScreen exits are edited with the project management transaction (CMOD).The technical names of screen exits consist of the name of th

19、e calling program, the four-digit screen number for the main screen, and the name of the subscreen area, followed by the name of the X function groups program and the number of the subscreen.屏幕出口使用项目管理交易事务 （CMOD）被编辑。屏幕出口的技术名称由调用程序、 主屏幕的四位屏幕编号、和子屏 幕区域的名字构成，后面跟着X函 数组的程序名和子屏幕编码。Customer Exits - Screen ExitThe SAP dev