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->selectionscreen作用﹕創建交互式abap/4程式主要包含:1.parameters為變量分配數值2.select-options定義選擇標准3.selection-screenscreen格式化parameters語法格式:parameters<p>[(<length>)]<type>[<decimals>].PARAMETERS:WORD(10)TYPEC,DATETYPED,NUMBERTYPEPDECIMALS2,MATERIALLIKEMARA-MATNR.Parameter的格式化選項1.分配defaultvaluePARAMETERS<p>......DEFAULT<f>......Eg.PARAMETERS:VALUETYPEIDEFAULT100,NAMELIKESY-UNAMEDEFAULTSY-UNAME,DATELIKESY-DATUMDEFAULT'19950627'.2.禁止參數顯示PARAMETERS<p>......NO-DISPLAY......3.lowercaseorno?PARAMETERS<p>......LOWERCASE......4.指定為必須輸入PARAMETERS<p>......OBLIGATORY......5.createcheckboxPARAMETERS<p>......ASCHECKBOX......Eg.PARAMETERS:AASCHECKBOX,BASCHECKBOXDEFAULT'X'.6.createradiobuttonPARAMETERS<p>......RADIOBUTTONGROUP<radi>......Eg.PARAMETERS:R1RADIOBUTTONGROUPRAD1,R2RADIOBUTTONGROUPRAD1DEFAULT'X',R3RADIOBUTTONGROUPRAD1,S1RADIOBUTTONGROUPRAD2,S2RADIOBUTTONGROUPRAD2,S3RADIOBUTTONGROUPRAD2DEFAULT'X'.作用:提供方便的方式限制程式從database中抓取數據select-options語法格式SELECT-OPTIONS<seltab>FOR<f>.Eg.TABLESLFA1.SELECT-OPTIONSVENDORFORLFA1-LIFNR.Select-options的格式化選項1.分配defaultvalueSELECT-OPTIONS<seltab>FOR<f>DEFAULT<g>[TO<h>]....Eg.SELECT-OPTIONSLIFNRFORLFA1-LIFNRDEFAULT'CPQ001'TO'CPQ003'.2.制定簡單選擇SELECT-OPTIONS<seltab>FOR<f>.....NO-EXTENSION.....Eg.TABLESEINA.SELECT-OPTIONSMATFOREINA-MATNRNO-EXTENSION.3.指定為單個field選擇SELECT-OPTIONS<seltab>FOR<f>.....NOINTERVALS.....Eg.TABLESKONH.SELECT-OPTIONSDATABFORKONH-DATABNO-INTERVALS.4.otheroptionsSELECT-OPTIONS<seltab>FOR<f>...NO-DISPLAY...SELECT-OPTIONS<seltab>FOR<f>...LOWERCASE...SELECT-OPTIONS<seltab>FOR<f>...OBLIGATORY...使用select-options1.where子句.........WHERE<f>IN<seltab>.Eg.TABLESEINA.SELECT-OPTIONSP_MATNRFOREINA-MATNR.SELECT*FROMEINAWHEREMATNRINP_MATNR.WRITEEINA-MATNR.ENDSELECT.2.logicalexpression...<f>IN<seltab>....Eg.TABLESEINA.SELECT-OPTIONSP_MATNRFOREINA-MATNR.WRITE:'Inside','Outside'.SELECT*FROMEINAUPTO50ROWS.IFEINA-MATNRINP_MATNR.WRITE:/EINA-MATNRUNDER'Inside'.ELSE.WRITE:/EIN
