onDynXLS

fires when the combo list is being populated with data from the server

Example

myCombo.enableFilteringMode(true,"dummy"); 
myCombo.attachEvent("onDynXLS", myComboFilter);
 
function myComboFilter(text){//where 'text' is the text typed by the user in the combo
    myCombo.clearAll();
    dhtmlxAjax.get("data.php?mask="+text, function(xml){
        myCombo.load(xml.xmlDoc.responseText);
    })
}

The event is blockable. Returning false or nothing will block requests to the server

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