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Redisplaying Multi-ValuesA confusing feature of AREV is knowing which WINDOW_COMMON% variables to use where. Several people have asked how they can load a set of associated multivalues from an option key on a field and have the system recognise the fact that the multivalues have been loaded. For example, we might want to press F2, load up a set of booking information (artiste, date and time) dependant on the F2 response and then return to the screen and individually amend these items. Simply plugging the information into @RECORD does not work. The data is there but the status line tells you that you are on Amv 1/0. To achieve this, it is necessary to tell the system to redisplay @RECORD (WC_DISPLAY_ACTION% = 5), to recalculate the current prompt (WC_RESET% = 4), that the AMV values have been changed (WC_AMV_ACTION% = 5) and how many rows deep the AMV now is (WC_AMV_VARS%<0,3> = counter). Eg 0001 * 0002 * This code is on an F2 key. The user has been prompted 0003 * for whether or not to load a parameter table into the 0004 * current record. The parameter table is a set of 0005 * associated MVs in PARAM and it has to go into @RECORD<2-4> 0006 * 0007 IF USER.RESP = "Y" THEN 0008 FOR X = 1 TO MVS.TO.LOAD 0009 @RECORD<2,-1> = PARAM<1,X> 0010 @RECORD<3,-1> = PARAM<2,X> 0011 @RECORD<4,-1> = PARAM<3,X> 0012 NEXT 0013 * 0014 * Now toggle WINDOW_COMMON% variables (inserted at 0015 * beginning) 0016 * 0017 WC_DISPLAY_ACTION% = 5 0018 WC_AMV_ACTION% = 5 0019 WC_AMV_VARS%<0,3> = MVS.TO.LOAD 0020 WC_RESET% = 4 0021 END (Volume 1, Issue 10, Page 4) |
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