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| author | fvogel <fvogelnew1@free.fr> | 2020-01-18 12:04:51 (GMT) |
|---|---|---|
| committer | fvogel <fvogelnew1@free.fr> | 2020-01-18 12:04:51 (GMT) |
| commit | 31f67224a92cd43e51a0bf7131764f06eb30b742 (patch) | |
| tree | b05010e59ba92066a567159134dde8242cc62b0b /doc/canvas.n | |
| parent | b88a824e0bd64340b2da7531721414b4e4b94319 (diff) | |
| parent | e970d02a227279ca90ed80e99e330bbde75d0fd5 (diff) | |
| download | tk-31f67224a92cd43e51a0bf7131764f06eb30b742.zip tk-31f67224a92cd43e51a0bf7131764f06eb30b742.tar.gz tk-31f67224a92cd43e51a0bf7131764f06eb30b742.tar.bz2 | |
Fix [1660674fff]: arrow reconfig triggers infinite Enter/Leave event sequence, by better documenting the caveat.
Diffstat (limited to 'doc/canvas.n')
| -rw-r--r-- | doc/canvas.n | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/canvas.n b/doc/canvas.n index 49dcb80..623154f 100644 --- a/doc/canvas.n +++ b/doc/canvas.n @@ -1591,6 +1591,12 @@ ends of the line. \fBlast\fR (for an arrowhead at the last point of the line), or \fBboth\fR (for arrowheads at both ends). This option defaults to \fBnone\fR. +When requested to draw an arrowhead, Tk internally adjusts the corresponding +line end point so that the rendered line ends at the neck of the arrowhead +rather than at its tip so that the line doesn't extend past the edge of the +arrowhead. This may trigger a \fBLeave\fR event if the mouse is hovering this +line end. Conversely, when removing an arrowhead Tk adjusts the corresponding +line point the other way round, which may trigger an \fBEnter\fR event. .TP \fB\-arrowshape \fIshape\fR This option indicates how to draw arrowheads. |