MouseDown

Function Name	c:<CONTROL-NAME>#OnMouseDown
Syntax	`(defun c:<CONTROL-NAME>#OnMouseDown (Button [as Integer] Flags [as Bitflag] X [as Long] Y [as Long] /) )`
Return Type	Ignored
Applies To	Block View, Grid, Hatch, List View, Picture Box, Slide View

This event is triggered when one of the mouse buttons is pressed on the control. Button identifies the mouse button that triggered the event. Flags describes the state of the [Shift] and [Ctrl] keys, and the mouse buttons. X and Y specify the control client coordinates where the event occurred.

Button Number	Button
1	Left
2	Right
4	Middle

Flags bit	Value	Meaning
0	1	Left mouse button pressed
1	2	Right mouse button pressed
2	4	[Shift] key pressed
3	8	[Ctrl] key pressed
4	16	Middle mouse button pressed