combobox去除光标
listeners : {
'expand' : function(combo) {
var blurField = function(el) {
el.blur();
}
blurField.defer(10,this,[combo.el]);
},
'collapse' : function(combo) {
var blurField = function(el) {
el.blur();
}
blurField.defer(10,this,[combo.el]);
}
}



原文：http://www.sencha.com/forum/showthread.php?83780-Remove-the-cursor-from-a-combobox