MouseCallback gives unsigned values when mouse is outside the window (Bug #3446)
| Status: | Open | Start date: | 2013-12-19 |
|---|---|---|---|
| Priority: | Normal | Due date: | |
| Assignee: | Adi Shavit |
% Done: | 0% |
| Category: | highgui-gui | ||
| Target version: | - | ||
| Affected version: | 2.4.8 (latest release) | Operating System: | Windows |
| Difficulty: | HW Platform: | x64 | |
| Pull request: |
Description
When the mouse goes out of the window, e.g. while the button is still pressed, the MouseCallback event is received with the wrong coordinates.
When the mouse is above or to the left of the window, the values x and/or y (which are int) get are the unsigned short casting of the expected negative values.
Casting x/y to short returns the correct negative position.
On Windows x and y are recieved as the low and high words of a single int.
When separating them into 2 separate ints they should be cast to shorts before the assignment to allow for negative values.
See this row here .
Associated revisions
Merge pull request #3446 from pokeefe:fix-compilation-without-videoio
History
Updated by Anna Kogan about 11 years ago
Hello Adi,
Thank you for reporting the problem. If you could find on a solution for the issue, a contribution (see How_to_contribute) would be very appreciated!
- Affected version changed from 2.4.0 - 2.4.6 to 2.4.8 (latest release)
- Assignee set to Adi Shavit
Updated by Andrew Senin about 11 years ago
- Status changed from New to Open
Updated by Maksim Shabunin over 9 years ago
Issue has been transferred to GitHub: https://github.com/Itseez/opencv/issues/4662