Custom Widget Classes helps to set different css class or styles for widgets,the css class or styles can show in a dropdown list to be choosed . the list of css classes can be added from backend and also can code with theme.
see the options at settings>>widget classes and add classes.
If you are a theme developer you can add the classes in theme itself
add this code
add_filter('cWCdeveloperClasses','widgetclasses');
function widgetclasses(){
$clsses['classes']= array(
array(
'class'=>'with-border',
'desc'=>'With Border'
),
array(
'class'=>'white-bg',
'desc'=>'white background'
)
);
return $clsses;
}
if you want to set a default one for all the newly added widgets,add the default class too as shown below
add_filter('cWCdeveloperClasses','widgetclasses');
function widgetclasses(){
$clsses['classes']=array(
array(
'class'=>'with-border',
'desc'=>'With Border'
),
array(
'class'=>'white-bg',
'desc'=>'white background'
)
);
$clsses['default']=array(
'class'=>'widget',
'desc'=>'Widget'
);
return $clsses;
}