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https://issues.apache.org/jira/browse/PIVOT-776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13071056#comment-13071056
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Greg Brown commented on PIVOT-776:
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"I imagine that mouse wheel events would be ignored unless the Component was
focused *and* the mouse was over the Component."
This is OS-dependent. On OS X, scroll events are delivered to the native
component that is under the mouse regardless of focus state. On Windows, the
native component must have the focus as well.
I have always found the Windows behavior confusing - since the scroll wheel is
part of the mouse, I expect wheel events to go where the mouse is.
> Additional support for mouse wheel adjustments of Component values
> ------------------------------------------------------------------
>
> Key: PIVOT-776
> URL: https://issues.apache.org/jira/browse/PIVOT-776
> Project: Pivot
> Issue Type: Improvement
> Components: wtk, wtk-terra
> Environment: n/a
> Reporter: Chris Bartlett
> Assignee: Chris Bartlett
> Priority: Minor
> Fix For: 2.1
>
>
> I imagine that mouse wheel events would be ignored unless the Component was
> focused *and* the mouse was over the Component.
> Spinner - Equivalent to an UP/DOWN arrow key press when 'circular' property
> is true
> Slider - Equivalent to an UP/DOWN/LEFT/RIGHT arrow key press
> ListButton - Equivalent to an UP/DOWN arrow key press
> CalendarButton - No current UP/DOWN/LEFT/RIGHT arrow key press functionality
> to change date by a single day, but would be equivalent to this. Support for
> these key presses could be added at the same time.
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