Hello Francois,

Thank you for contacting Infragistics support. The following list is the proper order for Standard Click Event Behavior:

MouseDown event fires when the mouse button is pressed by the user.

Click event fires when the component is clicked 

MouseClick event fires when the component is clicked by the mouse.

MouseUp event fires when the mouse pointer is over the component and a mouse button is released by the user.

Please refere to the following MSDN documentation for further details. 
http://msdn.microsoft.com/en-us/library/ms171542.aspx

Please let me know if you have any additional questions about this matter.