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http://www.openoffice.org/issues/show_bug.cgi?id=82126
                 Issue #|82126
                 Summary|mousewheel scrolling behavior with Intellipoint 6.x an
                        |d/or newer MS mice
               Component|framework
                 Version|OOo 2.3
                Platform|PC
                     URL|
              OS/Version|Windows Vista
                  Status|UNCONFIRMED
       Status whiteboard|
                Keywords|
              Resolution|
              Issue type|DEFECT
                Priority|P2
            Subcomponent|code
             Assigned to|tm
             Reported by|arccoyote





------- Additional comments from [EMAIL PROTECTED] Mon Oct  1 06:19:02 +0000 
2007 -------
This bug affects Intellipoint 6.x aand some MS mice natively (no Intellipoint
installed)

The issue is how OO handles the delta values being sent in WM_MOUSEWHEEL. MS
initially dictated a value of +/- 120 per wheel detent, to allow for future
higher-resolution wheels. As it happened, Microsoft developed the free-spinning
"tiltwheel" which produces delta values proportional to the rotation speed.

-Slowly rotating the wheel will produce frequent messages with low delta values.
-Quickly spinning the wheel will produce higher delta values, but possibly less
messages.

Applications are supposed either use the variable delta to determine how to
scroll or accumulate delta until +/- 120 is reached (equivalent to one detent of
a traditional wheel) 

This is documented here: http://msdn2.microsoft.com/en-us/library/ms645617.aspx

As far as I can tell, OO is ignoring (and not accumulating) deltas < +/- 120

The issue with Intellipoint arises when it installs the HID filter driver
(point32k.sys). Natively, most mice (even tiltwheel) report a fixed delta +/-
120 per wheel event. After the filter is installed, variable deltas are
generated by tiltwheels and cause problems with OO (and some other apps, such as
iTunes...)

Some mice (MS Wireless Laser 6000 for example) natively report variable deltas
and will have problems even if Intellipoint is not installed. There is no
workaround in this case.
for these mice.

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