Hello,

In a intensive used aplication i got sporadic (4 errors in 2 years) , at line 396 :

METHOD ColAtPos( nPos ) INLINE ::aCols[ ::aDisplay[ MinMax( If( nPos == nil, 1, nPos ), 1, Len( ::aDisplay ) ) ] ]

With :

xtranslate MinMax( <xValue>, <nMin>, <nMax> ) => ;

Min( Max( <xValue>, <nMin> ), <nMax> )

The error indicates

Error description: Error BASE/1132 Bound error: array access
Args:
[ 1] = A { ... }
[ 2] = N 0

ColAtPos seems to be called with parameter 1. When Minmax returns 0 , it can only be declared as LEN(::aDisplay) == 0

I can simulate this error with hiding all the columns from the browse . It gives the same error , but the calllist is much longer.

I have no idea how ::aDisplay can become empty , for this browe ocol:hide() is not used at all

I note also that the error occurs always on the same computer ( network from +/- 10 computers) , so could it be a hardware problem ?

Frank

Antonio,

/
METHOD ColAtPos( nPos ) INLINE ::aCols[ ::aDisplay[ MinMax( If( nPos == nil, 1, nPos ), 1, Max( Len( ::aDisplay ), 1 ) ) ] ]
/

I don't believe it will solve the problem , the real problem is that for some reason ::aDisplay is empty. With this corection we have ::aDisplay[1] , it should also give a error.

The translate :

xtranslate MinMax( <xValue>, <nMin>, <nMax> ) => Min( Max( <xValue>, <nMin> ), <nMax> )

doesn't work when for some reason nMax < nMin , the translate gives then nMax ( the lowest value from nmin,nmax)

xtranslate MinMax( <xValue>, <nMin>, <nMax> ) => Min( Max( <xValue>, MIN(<nMin>,<nMax>) ), MAX(<nMin>,<nMax>) )

Should work !

I don't believe it will solve the problem , the real problem is that for some reason ::aDisplay is empty.

ukservice wrote:I do get it very often:

It is not a hardware problem.

It happens randomly when painting xBrowse.

Code (fw): Select all Collapse

  Error description: Error BASE/1132  Bound error: array access

   Args:
     [   1] = A   { ... }
     [   2] = N   0

Stack Calls
===========
   Called from: source\xbrowse.prg => (b)TXBROWSE(517)
   Called from: source\xbrowse.prg => TXBROWSE:COLATPOS(0)
   Called from: source\xbrowse.prg => (b)TXBROWSE(519)
   Called from: source\xbrowse.prg => TXBROWSE:SELECTEDCOL(0)
   Called from: source\xbrowse.prg => TXBROWSE:PAINT(1250)
   Called from: source\xbrowse.prg => TXBROWSE:DISPLAY(1228)
   Called from: .\source\classes\CONTROL.PRG => TCONTROL:HANDLEEVENT(1686)
   Called from: source\xbrowse.prg => TXBROWSE:HANDLEEVENT(11511)
   Called from: .\source\classes\WINDOW.PRG => _FWH(3443)
   Called from:  => DIALOGBOX(0)
   Called from: .\source\classes\DIALOG.PRG => TDIALOG:ACTIVATE(277)

nageswaragunupudi wrote:

I don't believe it will solve the problem , the real problem is that for some reason ::aDisplay is empty.

Yes.
This is the real reason.
One case was resolved recently. When HScroll bar is moved in a single column browse, this was happening. This was fixed.

We need to see under what other situations ::aDisplay is becoming empty. Any feedback on this is welcome.

1. You should never hide all columns. Atleast one column should be visible.

2. When there is only one column in the browse, using horizontal scroll bar was resulting in this error. This is fixed in the latest version. For previous versions, the work around was not to have HScroll bar when there is only one column in the browse.

nageswaragunupudi wrote:#1. You should never hide all columns. Atleast one column should be visible.

#2. When there is only one column in the browse, using horizontal scroll bar was resulting in this error. This is fixed in the latest version. For previous versions, the work around was not to have HScroll bar when there is only one column in the browse.

Nages ,

I try to simulate the same error list from mine user. I have no intention to hide all the columns in a browse

Frank

Rao ,

I tested to hide all columns (8.10) , but xbrowse doesn't allow to hide the last column.

Frank

That means the user can not hide all columns.
If at all all columns are hidden that is done by the programmer. Ofcourse we expect the programmer not to do it. So this is not an issue.

Mr. Nao,

In my case, I don´t hide any columns.

The error appears just ramdonly.

Hello again,

I am getting this error more often. Sometimes when the dbf is empty.

Is there any advance?.

Thank you.