首页计算机考试Oracle认证
(单选题)

Which statement is true about mouse events? ()

AThe cursor style can be set to CAUTION. 

BDouble-clicking a mouse button can potentially fire six mouse event triggers. 

CThe values for the SYSTEM.MOUSE_BUTTON_PRESSED system variable can only be 1 or 2. 

DClick and double-click button actions can only detect if the mouse is positioned in an item.

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