January 2006
Beginner
768 pages
32h 25m
English
book
Visual Basic 2005 in a Nutshell, Third Edition
by Tim Patrick, Ron Petrusha, Paul Lomax, Steven Roman PhD
Content preview from Visual Basic 2005 in a Nutshell, Third Edition
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Chapter 13: The ‘My’ Reference
This is the Title of the Book, eMatter Edition
Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.
• An exception is thrown if the computer does not have an installed mouse.
• Always use this property to detect the presence of a mouse wheel before using the
My.Computer.Mouse.WheelScrollLines property.
Related Framework Entries
• Microsoft.VisualBasic.Devices.Mouse.WheelExists Property
• System.Windows.Forms.SystemInformation.MouseWheelPresent Property
See Also
ButtonsSwapped Property, Mouse Object, WheelScrollLines Property
WheelScrollLines Property
Location
My.Computer.Mouse.WheelScrollLines
Syntax
Dim result As Integer = My.Computer.Mouse.WheelScrollLines
Description
On systems that have a “mouse wheel” included on the installed mouse, the
WheelScrollLines indicates how far the context should be scrolled when the wheel is
rotated one position.
Usage at a Glance
• This property is read-only.
• This property is only valid in non-server applications.
• An exception is thrown if the computer does not have an installed mouse.
• An exception is thrown if the installed mouse does not include a mouse wheel.
• Always use the My.Computer.Mouse.WheelExists property to detect the presence
of a mouse wheel before using the WheelScrollLines property.
Example
The following example displays the scroll amount for each mouse wheel rotation
position.
If My.Computer.Mouse.WheelExists ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.