Issue 29559: Detect mouse over lines on canvas while mouse button is down

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This issue has been migrated to GitHub: https://github.com/python/cpython/issues/73745

classification

Title:	Detect mouse over lines on canvas while mouse button is down
Type:	enhancement	Stage:
Components:	Tkinter	Versions:	Python 3.6

process

Status:	open	Resolution:
Dependencies:		Superseder:
Assigned To:		Nosy List:	Ted Shaneyfelt2, gpolo, serhiy.storchaka
Priority:	normal	Keywords:

Created on 2017-02-14 18:38 by Ted Shaneyfelt2, last changed 2022-04-11 14:58 by admin.

Messages (1)
msg287789 - (view)	Author: Ted Shaneyfelt (Ted Shaneyfelt2)	Date: 2017-02-14 18:38
There way mouse captures are done, mouse-over events seem to be disabled while dragging. This makes it difficult to provides hints as feedback, and more complicated than it should be to detect when dropping over a particular line object. Tk may not directly support it, but is there any way of getting into its guts to provide an option to re-enable mouse-over events while dragging? Or even providing a tuple with the pending mouse-overs upon release? or perhaps even simulate a mouse-up-mouse-down sequence to allow the events to propagate through and consume the noise within tkinter? Or even detect that there is a pending mouseover waiting for the mouseup event and delivering it along with the mouseup or notifying within the event that there is one pending?

msg287789 - (view)

Author: Ted Shaneyfelt (Ted Shaneyfelt2)

Date: 2017-02-14 18:38

There way mouse captures are done, mouse-over events seem to be disabled while dragging. 

This makes it difficult to provides hints as feedback, and more complicated than it should be to detect when dropping over a particular line object. 

Tk may not directly support it, but is there any way of getting into its guts to provide an option to re-enable mouse-over events while dragging? Or even providing a tuple with the pending mouse-overs upon release? or perhaps even simulate a mouse-up-mouse-down sequence to allow the events to propagate through and consume the noise within tkinter? Or even detect that there is a pending mouseover waiting for the mouseup event and delivering it along with the mouseup or notifying within the event that there is one pending?

History
Date	User	Action	Args
2022-04-11 14:58:43	admin	set	github: 73745
2017-02-19 15:30:23	xiang.zhang	set	nosy: + gpolo, serhiy.storchaka
2017-02-14 18:38:59	Ted Shaneyfelt2	create