 
			 
			MCQOPTIONS
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				| 1. | Window class, onKeyDown/3 , defines | 
| A. | a mouse button was double clicked | 
| B. | the user clicks on a window | 
| C. | a key on the keyboard is pressed | 
| D. | a key on the keyboard is released | 
| Answer» D. a key on the keyboard is released | |