Description
If enabled, this event is reported when the user releases one of the mouse buttons. The event message reported as the result of ⎕DQ, or supplied as the right argument to your callback function, is a 6-element vector as follows :
| [1] | Object | ref or character vector |
| [2] | Event | 'MouseUp' or 2 |
| [3] | Y | y-position of mouse (number) |
| [4] | X | x-position of mouse (number) |
| [5] | Button | button released (number) 1 = left button 2 = right button 4 = middle button |
| [6] | Shift State | sum of shift key codes (number) 1 = Shift key is down 2 = Ctrl key is down |
In a graphical object (Circle, Ellipse, Image, Marker, Poly and Rect), the position of the mouse is reported relative to the top-left corner of its bounding rectangle.