|Data type||Range||Default value|
|REG_SZ||100 - 900 (milliseconds in decimal)||500|
Specifies the maximum time that can elapse between mouse clicks that is interpreted as a double-click. If the time between clicks exceeds the value of this entry, the clicks are interpreted as single clicks.
To change the value of this entry, double-click Mouse in Control Panel. Click the Buttons tab and use the Double-click speed slider.