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attachEvent + keypress

I'm attempting to limit the input of a column to numeric only. I found this entry, http://www.dhtmlx.com/docs/products/kb/index.shtml?cat=search&page=1&q=6285&ssr=yes&s=setColTypes numeric, but it didn't work for me. It only activated when the user entered the column, not on the keypress.

I also checked some for of ColType, but didn't find anything in the kb.

GRID SETUP.
grdNewOrderSelections = new dhtmlXGridObject('grdNewOrderSelections_Container')\
grdNewOrderSelections.setHeader(",,,");
grdNewOrderSelections.setNoHeader(true);
grdNewOrderSelections.setInitWidths("20,135,45,20");
grdNewOrderSelections.setColTypes("txt,ro,ro,ro");
grdNewOrderSelections.setColAlign("right,left,right,right");


Thanks,
James

You can use "onKeyPress" event. This event occurs after a key was pressed but before the default key processing starts. onKeyPress event passes the following parameters: 
code - key code;
cFlag - control key flag;
sFlag - shift key flag. 
  grid.attachEvent("onKeyPress", function(code,cFlag,sFlag){});

Thanks, however it's not returning anything

grdNewOrderSelections.attachEvent("onKeyPress", function(code,cFlag,sFlag){alert('keypress:'+code);});

When the user double-clicks and starts entering text into the field I do not get the alert.  Any ideas?

Thanks,
James

 

Please find example of implementing necessary behaviour here http://dhtmlx.com/docs/products/dhtmlxGrid/samples/cell_types/pro_maxlength.html