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해당 container에서만, panel.items.map[strQueryID]

전체에서, Ext.getCmp(strQueryID)

해당 container에서만, panel.child("#"+strQueryID)

해당 container에서만, panel.getComponent(strQueryID)

handler:function(target){

target.ownerCt.remove(target);

}

var DButton = Ext.extend(Ext.Button,{

text:"button"

});

var dButton = new DButton();

Ext.reg("dButton",DButton);