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dhtmlxGrid And Tab order


Is it possible to control tab order in the cells based on the value of a cell?
I found this piece of code in the knowledge base,

detailgrid.attachEvent("onTab",function(){
var ind = detailgrid.getRowIndex(detailgrid.getSelectedRowId());
var cind=detailgrid.getSelectedCellIndex();

if (cind==1) cind==3; //tab from 2 to 4
else if (cind==3) { cind=1; ind++; } //tab to cell 2 on next row

if (ind==this.getRowsNum()) return true; // last row in grid
detailgrid.selectCell(ind,cind);
detailgrid.editCell();
return false;
});

I used this code but not working?

If this can be used, where is this to be done?

I have a grid with 8 columns after the 4th cell, tab should move focus to the first cell on the next row.

help me please...

>>I used this code but not working?
onTab event exists only in latest version of dhtmlxgrid, if you are using older version - it will not work ( by the way, which version of the grid you are using? )

In older version of grid you can use onKeyPress event which occurs for any key action ( you can check the key code and execute necessary logic )

If you are using latest version of grid and logic still doens't work for you - please contact us directly at support@dhtmlx.com - we will provide a working sample