CButtonColumn

array(
'class'=>'CButtonColumn',
'template'=>'{xxx}',
'buttons'=>array(
'xxx' => array(
'label'=>'...', // text label of the button
'url'=>'', // a PHP expression for generating the URL of the button
'imageUrl'=>Yii::app()->request->baseUrl . '/images/accept.png',
'options'=>array(''), // HTML options for the button tag
'click'=>'', // a JS function to be invoked when the button is clicked
'visible'=>'true', // a PHP expression for determining whether the button is visible
)
)
),

Ссылки