single event caught by multiple control
<p>The quote I'm having trouble with (a paper about web application):
"problem will occur when multiple control respond to a single event. In this case each control will call method A where method A always tries to acquire a resource. But in most of the cases, the resource can be shared among controls."</p>

<p>First of all, I wish to define my own definition of control : UI components like buttons, checkboxes, radio buttons, etc. Are there any other definition about control?</p>

<p>Can anybody give an example where an event will be caught by multiple controls? AFAIK, an event can only be tied to a single control like button1_Clicked or List1_KeyPress. So the text above just doesn't make any sense to me.</p>

<p>Thanks</p>
