Error : Calendar Control

[TimStone]

The following lines were used in a sample to highlight dates ( from a database ).


OnGetState( oCal, aDates )
oCal:SetDayState()
oCal:bOnGetState = { | oCal | OnGetState( oCal, aDates ) }

SetDayState() results in an unrecoverable error 9023: hb_xgrab requested to allocate zero bytes. There are 23 elements in the array aDates, and at least two are for the month being displayed.

Looking at the code for OnGetState( oCal, aDates ), however, I think there may be an error:

METHOD SetArrayDayState( nMonth, nDay ) is looking for the actual month, but in the function provided, that value is always 1
oCal:SetArrayDayState( 1, Day( aDates[ i ] ) )

I would love to get this working. The code to which I'm referring was in the previous post on the Calendar implementation in 10.4.
http://forums.fivetechsupport.com/viewtopic.php?f=3&t=18690&p=97977&hilit=calendar#p97977

Thanks for any suggestions !

[Daniel Garcia-Gil]

Hello Tim

can you post a self container sample?

thank you

[TimStone]

I think if you look at the link I posted to the previous thread, and the sample you posted toward the end, you will see the code to which I'm referring. Although I plugged it into some more extensive code, everything else is clean until I call the one function I referenced above. If I comment out that call, then there is no problem but of course the dates are not highlighted.

The code I used was:

REDEFINE CALENDAR oCal VAR dDate OF oCalDlg ID 2001 ;
ON CHANGE ( dDate := oCal:GetDate(), ApptFunc( ) )

OnGetState( oCal, aDates )
oCal:SetDayState() // THE ERROR OCCURS WITH THIS CALL
oCal:bOnGetState = { | oCal | OnGetState( oCal, aDates ) }

[Daniel Garcia-Gil]

Tim

How do you fill ::aDayState array?

remember if you have 1, 2, 3..., 12 visible months in calendar, the first month visible always will be 1 inside array, example

a calendar with 3 month visible

june, july, august

june = 1
july = 2
august = 3

i mean, the position [1, 20] is june, 20
the position [3, 12] is august, 12

all month for this array will have 31 position (31 days), no matter the months with 28, 29 or 30 days... if you set february 31 inside array, nothing happen

[TimStone]

I have a database of appointments. I filled the array with dates from the individual records. There are 23 records, so 23 items in the array.

I only show one calendar. I'm using it to select the date on which they want to view the appointments. On initialization I assumed it would show the dates highlighted that had appointments.

This is the code for the calendar. The ApptFunc() sets a filter for xbrowse for the date selected on the calendar ( dDate ) to display the appointments on that date. It works fine.

REDEFINE CALENDAR oCal VAR dDate OF oCalDlg ID 2001 ;
ON CHANGE ( dDate := oCal:GetDate(), ApptFunc( ) )

OnGetState( oCal, aDates )
oCal:SetDayState()
oCal:bOnGetState = { | oCal | OnGetState( oCal, aDates ) }

Maybe there is something else I'm missing. Except for the error with SetDayState() I have no problems. I am usign xHbarbour commercial with the Pelles C Builder.

[Daniel Garcia-Gil]

Tim..

can you post function OnGetState() ??

thanks

[TimStone]

OnGetState is the function in the sample you provided.

Code: Select all  Expand view  RUN

Function OnGetState( oCal, lSun, lSat )
   LOCAL i, imax, j, jmax, nDay, nDayState, nMonth
   LOCAL dStartDate
   LOCAL dCurrentDay := oCal:dDate

   oCal:GetMonthRange()

   dStartDate = oCal:dDate

   imax   := Len( oCal:aDayState )
   nMonth := Month( dStartDate )


   FOR i:=1 TO imax
      nDayState := 0

      FOR j:=1 TO 31
         nDay := DoW( dStartDate ) - 2
         IF nDay < 0
            nDay += 7
         ENDIF

         IF nDay == 5 .AND. lSat
            oCal:SetArrayDayState( i, j )
         ENDIF

         IF nDay == 6 .AND. lSUN
            oCal:SetArrayDayState( i, j )
         ENDIF

         dStartDate ++

         IF Month( dStartDate ) <> nMonth
            EXIT
         ENDIF
      NEXT

      nMonth       := Month( dStartDate )
   NEXT

   oCal:SetDate( dCurrentDay )

return nil

[Daniel Garcia-Gil]

Tim


please build/run this test

Code: Select all  Expand view  RUN

#include "fivewin.ch"
#include "calendar.ch"

FUNCTION Main()

   LOCAL oCal, oWnd
   LOCAL dDate     := Date()
   LOCAL lSunday   := .T.
   LOCAL lSaturday := .T.
   
   DEFINE WINDOW oWnd
   
   @ 0,0 CALENDAR oCal VAR dDate OF oWnd DAYSTATE
   
    OnGetState( oCal, lSunday, lSaturday )
    oCal:SetDayState()
    oCal:bOnGetState = { | oCal | OnGetState( oCal, lSunday, lSaturday ) }  
   
   ACTIVATE WINDOW oWnd

RETURN NIL

Function OnGetState( oCal, lSun, lSat )
   LOCAL i, imax, j, jmax, nDay, nDayState, nMonth
   LOCAL dStartDate
   LOCAL dCurrentDay := oCal:dDate

   oCal:GetMonthRange()

   dStartDate = oCal:dDate

   imax   := Len( oCal:aDayState )
   nMonth := Month( dStartDate )


   FOR i:=1 TO imax
      nDayState := 0

      FOR j:=1 TO 31
         nDay := DoW( dStartDate ) - 2
         IF nDay < 0
            nDay += 7
         ENDIF

         IF nDay == 5 .AND. lSat
            oCal:SetArrayDayState( i, j )
         ENDIF

         IF nDay == 6 .AND. lSUN
            oCal:SetArrayDayState( i, j )
         ENDIF

         dStartDate ++

         IF Month( dStartDate ) <> nMonth
            EXIT
         ENDIF
      NEXT

      nMonth       := Month( dStartDate )
   NEXT

   oCal:SetDate( dCurrentDay )

return nil
 

[TimStone]

That may work but it is a very defined sample. It is different then what you posted for an example on how to highlight a series of dates.

I've been working on trying to figure out where the problem lies. For example, I am using a REDEFINE which is different then the DEFINE example. Not as many options are shown in a redefine. For example, you use DAYSTATE with your control but that cannot be placed in a redefine. Maybe that contributes to the problem ?

What I'm trying to do is to click on a date, and use it to filter the database of appointments. I find that using ON CHANGE is giving me a blank date ( oCal:dDate is returning " / / " in the OnGetState( ) function ).

I'll continue testing today. Any thoughts would be appreciated.

[TimStone]

The problem lies in the difference between DEFINE and REDEFINE. When doing a REDEFINE, you do not address the initialization of DAYSTATE. Thus the aDateState is empty and that creates a problem.

For testing, I am using your code sample in a program with an .RC file which is setup accurately. I have modified the control as follows:

LOCAL dDate := DATE()



REDEFINE CALENDAR oCal VAR dDate OF oCalDlg ID 2001

// These calls are not in REDEFINE but are in DEFINE
oCal:lDayState := .T.
oCal:resetDayStates()

// This is your function from the sample and checking nMonth I get a 0
OnGetState( oCal, lSunday, lSaturday )

// The following call gets an "hb_xgrab requested to allocate zero bytes. error message.
oCal:SetDayState()

oCal:bOnGetState = { | oCal | OnGetState( oCal, lSunday, lSaturday ) }

In the OnGetState() call, the following results are shown:

dStartDate = oCal:dDate
imax := Len( oCal:aDayState )
nMonth := Month( dStartDate )
MsgInfo( dStartDate ) // Displays " / / "
MsgInfo( imax ) // Displays 0
MsgInfo( nMonth ) // Displays 0

Your ideas would be appreciated.

[Daniel Garcia-Gil]

Tim

DAYSTATE is control Style, you should activate in RC/RES file, check MCS_DAYSTATE

[TimStone]

Here is a full test .prg for this with a dialog and resource using your sample. Sat and Sun should be in bold but in fact they are not.

Code: Select all  Expand view  RUN

#include "fivewin.ch"
#include "calendar.ch"

FUNCTION TestClndr()

   LOCAL oCal, oWnd
   LOCAL dDate     := Date()
   LOCAL lSunday   := .T.
   LOCAL lSaturday := .T.

   DEFINE DIALOG oWnd2 RESOURCE "CALENDAR2"

   REDEFINE CALENDAR oCal VAR dDate OF oWnd2 ID 2010

    ACTIVATE WINDOW oWnd2 ON INIT InitState( oCal, lSunday, lSaturday )

RETURN NIL


FUNCTION InitState( oCal, lSunday, lSaturday )
    OnGetState( oCal, lSunday, lSaturday )
    oCal:SetDayState()
    oCal:bOnGetState = { | oCal | OnGetState( oCal, lSunday, lSaturday ) }

   ACTIVATE WINDOW oWnd2

RETURN NIL

Function OnGetState( oCal, lSun, lSat )
   LOCAL i, imax, j, jmax, nDay, nDayState, nMonth
   LOCAL dStartDate
   LOCAL dCurrentDay := oCal:dDate

   oCal:GetMonthRange()

   dStartDate = oCal:dDate
     MsgInfo( dStartDate )
   imax   := Len( oCal:aDayState )
   nMonth := Month( dStartDate )
     MsgInfo( nMonth )

   FOR i:=1 TO imax
      nDayState := 0

      FOR j:=1 TO 31
         nDay := DoW( dStartDate ) - 2
         IF nDay < 0
            nDay += 7
         ENDIF

         IF nDay == 5 .AND. lSat
            oCal:SetArrayDayState( i, j )
         ENDIF

         IF nDay == 6 .AND. lSUN
            oCal:SetArrayDayState( i, j )
         ENDIF

         dStartDate ++

         IF Month( dStartDate ) <> nMonth
            EXIT
         ENDIF
      NEXT

      nMonth       := Month( dStartDate )
   NEXT

   oCal:SetDate( dCurrentDay )

return nil
 

// ANd here is the RC file:

Code: Select all  Expand view  RUN

CALENDAR2 DIALOG DISCARDABLE 0, 0, 300, 200
STYLE WS_POPUP|DS_MODALFRAME|WS_CAPTION|WS_VISIBLE
CAPTION "Testing"
FONT 8, "Microsoft Sans Serif"
BEGIN
  CONTROL "",2010,"SysMonthCal32",WS_CHILD |WS_TABSTOP |WS_VISIBLE|MCS_DAYSTATE , 10,30,169,100
END

[Daniel Garcia-Gil]

Tim

1. Is not ACTIVATE WINDOW is ACTIVATE DIALOG

2. Delete ACTIVATE WINDOW oWnd2 from Function OnGetState

try with this changes

[TimStone]

That is not the problem. It actually displayed the window ( dialog ) but the problem is that it does not bold the Saturday and Sunday dates.

There is an additional problem with the code shown above. When it activates, it has the focus date on May 1, not May 19. May 19 is boxed !

[Daniel Garcia-Gil]

Tim...

did you tried my changes?
because, your sample work for me, with the change i told

With Changes

Code: Select all  Expand view  RUN

#include "fivewin.ch"
#include "calendar.ch"

FUNCTION TestClndr()

   LOCAL oCal, oWnd
   LOCAL dDate     := Date()
   LOCAL lSunday   := .T.
   LOCAL lSaturday := .T.

   DEFINE DIALOG oWnd2 RESOURCE "CALENDAR2"

   REDEFINE CALENDAR oCal VAR dDate OF oWnd2 ID 2010

    ACTIVATE DIALOG oWnd2 ON INIT InitState( oCal, lSunday, lSaturday )

RETURN NIL


FUNCTION InitState( oCal, lSunday, lSaturday )
    OnGetState( oCal, lSunday, lSaturday )
    oCal:SetDayState()
    oCal:bOnGetState = { | oCal | OnGetState( oCal, lSunday, lSaturday ) }

RETURN NIL

Function OnGetState( oCal, lSun, lSat )
   LOCAL i, imax, j, jmax, nDay, nDayState, nMonth
   LOCAL dStartDate
   LOCAL dCurrentDay := oCal:dDate

   oCal:GetMonthRange()

   dStartDate = oCal:dDate
     MsgInfo( dStartDate )
   imax   := Len( oCal:aDayState )
   nMonth := Month( dStartDate )
     MsgInfo( nMonth )

   FOR i:=1 TO imax
      nDayState := 0

      FOR j:=1 TO 31
         nDay := DoW( dStartDate ) - 2
         IF nDay < 0
            nDay += 7
         ENDIF

         IF nDay == 5 .AND. lSat
            oCal:SetArrayDayState( i, j )
         ENDIF

         IF nDay == 6 .AND. lSUN
            oCal:SetArrayDayState( i, j )
         ENDIF

         dStartDate ++

         IF Month( dStartDate ) <> nMonth
            EXIT
         ENDIF
      NEXT

      nMonth       := Month( dStartDate )
   NEXT

   oCal:SetDate( dCurrentDay )

return nil
 

RC File

Code: Select all  Expand view  RUN

CALENDAR2 DIALOG DISCARDABLE 0, 0, 300, 200
STYLE WS_POPUP|DS_MODALFRAME|WS_CAPTION|WS_VISIBLE
CAPTION "Testing"
FONT 8, "Microsoft Sans Serif"
BEGIN
  CONTROL "",2010,"SysMonthCal32",WS_CHILD |WS_TABSTOP |WS_VISIBLE|MCS_DAYSTATE , 10,30,169,100
END
 

exe file...
http://www.sitasoft.net/fivewin/samples/timtc.zip

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without change

exe file...
http://www.sitasoft.net/fivewin/samples/timtc2.zip

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