On Fri, 20 Dec 2024 19:33:24 GMT, Alexey Ivanov <aiva...@openjdk.org> wrote:
>> Yes, I'm running into NPE without as well as with the fix. > > Is the current behaviour even a bug? > [`Robot.mouseMove`](https://docs.oracle.com/en/java/javase/23/docs/api/java.desktop/java/awt/Robot.html#mouseMove(int,int)) > says nothing about invalid coordinates. > >> @aivanov-jdk I see your point. But I'm running into NPE at >> `MouseInfo.getPointerInfo().getLocation()` without the fix as well (dual >> monitor, extended display setup) > > It's probably even better… > >> Is it expected of MouseInfo.getPointerInfo() to return null for off-screen >> coordinates (meaning does it consider it as mouse not available if it is >> outside the screen devices)? >> >> PointerInfo has two things associated with it - screen device and a >> location, so if it is not able to associate the coordinate with any of the >> screen device (off-screen coordinate) is it suppose to return null in this >> case? > > So, the mouse seems to be positioned outside of the virtual screen bounds. > For this reason, `MouseInfo.getPointerInfo()` cannot return anything. > > This again raises the question, why does it return a non-null value on macOS? > > What do you see on the screen? Does the mouse cursor or its part remain > visible on the screen? What happens when you start moving your mouse? > Yes, I'm running into NPE without as well as with the fix. Can you provide information on your multi-screen setup ? how many displays ? what is the relative placement of the monitors ? What are the virtual bounds of your setup ? And the stack trace of the exception you get too. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/22781#discussion_r1894333618