fkinternalcalc are normal fields
==========================
We used ones for storing data not related to SQL-data - boolean
switches for records (for group selections) etc. Two my big projects
are based on this feature.
Today, "OnChanged" event handler (see below) for fkInternalCalc-field
can't be reached since exception about non edit/insert state preceeds
it.
procedure tdmmainmo.f18selchanged(Sender: TField);
begin
with sender do begin
if asboolean then
inc(f18monthscount)
else
if f18monthscount > 0 then inc(f18monthscount,-1);
end;
if mainfo <> nil then mainfo.f18indexchoicereenablecheck(f18monthscount > 0);
end;
The excetion stack :
#0 0040B416 :0 fpc_raiseexception()
#1 0054805C :0 MDB_DATABASEERRORFMT$ANSISTRING$array_of_const$TCOMPONENT()
#2 005B06A3 :0
MSEBUFDATASET_TMSEBUFDATASET_$__GETFIELDBUFFER$TFIELD$BOOLEAN$LONGINT$$POINTER()
#3 005B0EB7 :0
MSEBUFDATASET_TMSEBUFDATASET_$__SETMSESTRINGDATA$TMSESTRINGFIELD$UNICODESTRING()
#4 0055FA77 :0 MSEDB_TMSESTRINGFIELD_$__SETASUNICODESTRING$UNICODESTRING()
#5 0043AF2B dmmain.pas:660
TDMMAINMO__F18MONTHLISTCALCFIELDS(DATASET=0xa07b8, this=<error reading
variable>)
#6 0054A44E dmmain.pas:0 MDB_TDATASET_$__DOONCALCFIELDS()
#7 005B9E0D dmmain.pas:0
MSEBUFDATASET_TMSEBUFDATASET_$__CALCULATEFIELDS$PCHAR()
#8 0054A59B dmmain.pas:0 MDB_TDATASET_$__GETCALCFIELDS$PCHAR()
#9 0054CB4E dmmain.pas:0 MDB_TDATASET_$__EDIT()
#10 0055A09C dmmain.pas:0 MDB_TDATASOURCE_$__EDIT()
#11 005594B0 dmmain.pas:0 MDB_TDATALINK_$__EDIT$$BOOLEAN()
#12 00510A55 dmmain.pas:0
MSEDBEDIT_TCUSTOMEDITWIDGETDATALINK_$__EDIT$$BOOLEAN()
#13 00510B27 dmmain.pas:0 MSEDBEDIT_TCUSTOMEDITWIDGETDATALINK_$__MODIFIED()
#14 00513147 dmmain.pas:0 MSEDBEDIT_TDBBOOLEANEDIT_$__MODIFIED()
#15 005A12CD dmmain.pas:0 MSEGRAPHEDITS_TGRAPHDATAEDIT_$__VALUECHANGED()
#16 005A233A dmmain.pas:0
MSEGRAPHEDITS_TCUSTOMBOOLEANEDIT_$__SETVALUE$BOOLEAN()
#17 005A1FE6 dmmain.pas:0
MSEGRAPHEDITS_TCUSTOMBOOLEANEDIT_$__INTERNALCHECKVALUE$formal$BOOLEAN()
#18 005A0967 dmmain.pas:0
MSEGRAPHEDITS_TGRAPHDATAEDIT_$__DOCHECKVALUE$formal$$BOOLEAN()
#19 005A2039 dmmain.pas:0
MSEGRAPHEDITS_TCUSTOMBOOLEANEDIT_$__TOGGLEVALUE$BOOLEAN$BOOLEAN()
#20 005A1ADB dmmain.pas:0
MSEGRAPHEDITS_TTOGGLEGRAPHDATAEDIT_$__MOUSEEVENT$MOUSEEVENTINFOTY()
#21 0042AF0C msegui.pas:13597 TWINDOW__DISPATCHMOUSEEVENT(INFO={MOUSE
= {EVENTKIND = EK_BUTTONRELEASE, SHIFTSTATE = [], POS = {X = 30, Y =
6}, EVENTSTATE = [], TIMESTAMP = 3479817816, BUTTON = MB_LEFT}, WHEEL
= {EVENTKIND = EK_BUTTONRELEASE, SHIFTSTATE = [], POS = {X = 30, Y =
6}, EVENTSTATE = [], TIMESTAMP = 3479817816, WHEEL = MW_UP, DELTA =
0}}, CAPTURE=0xce968, this=<error reading variable>)
#22 0042E673 msegui.pas:15240
TINTERNALAPPLICATION__PROCESSMOUSEEVENT(EVENT=0x40039f8, this=<error
reading variable>)
#23 004305C6 msegui.pas:16172
TINTERNALAPPLICATION__EVENTLOOP(ONCE=false, this=<error reading
variable>)
#24 00431A47 msegui.pas:16767
TINTERNALAPPLICATION__DOEVENTLOOP(ONCE=false, this=<error reading
variable>)
#25 00477245 mseapplication.pas:1607
TCUSTOMAPPLICATION__RUN(this=<error reading variable>)
#26 00402312 podpiska.pas:41 main()
------------------------------------------------------------------------------
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