# nsIAccessibleCoordinateType

`accessible/public/nsIAccessibleTypes.idl`Scriptable
These constants define which coordinate system a point is located in.
1.0
66
Introduced
Gecko 1.9
Inherits from: `nsISupports` Last changed in Gecko 1.9 (Firefox 3)

Prior to Gecko 1.9, these constants were implemented in `nsIAccessibleText`.

## Constants

 Constant Value Description `COORDTYPE_SCREEN_RELATIVE` `0x00` The coordinates are relative to the screen. `COORDTYPE_WINDOW_RELATIVE` `0x01` The coordinates are relative to the window. `COORDTYPE_PARENT_RELATIVE` `0x02` The coordinates are relative to the upper left corner of the bounding box of the immediate parent.