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\chapter{oscroll: The Old Scroll Bars

}
\section{What is oscroll?

}\leftindent{
oscroll is the old scroll bar system.  Its use is discouraged, as it has been 
superseded by the scroll system described in the help file "Scrolling".  The 
two systems are almost identical in function; the primary difference is in 
appearance.  Where the default scroll bars appear to have raised and depressed 
areas, the oscroll bars draw areas with different "gray" patterns.  The ends 
of the bar (which correspond to the buttons in the default scroll bars) are 
drawn in a light gray, the bar itself is drawn in a darker gray, and the 
elevator is drawn as a rectangle filled with white.  The dot is represented by 
a black rectangle in both systems.  The oscroll bars respond to some of the 
preferences of the default system, but have some of their own as well.  These 
preferences are listed below.

}
\section{Starting oscroll

}\leftindent{
}	To use oscroll you must add a preference like:


		*.ScrollClass: oscroll


	to your preferences file (see \helptopic{preferences} for more information 
and warnings).


\section{Preferences

}\leftindent{
\bold{MotifScrollBars:}\italic{\bold{ no}

}\leftindent{ Determines if "Motif-style" scrollbars are desired.

}
\bold{ScrollbarWidth:}\italic{\bold{ }\bold{20} }\bold{(for normal scrollbars 
)}\italic{,\bold{ 15 }}\bold{(for "Motif" style scrollbars)}\italic{

}\leftindent{ Determines the width of the scrollbar.

}
\bold{DotWidth:}\italic{\bold{ 7}

}\leftindent{ The width of the rectangle which indicates where the cursor is 
or where the selection is.

}
\bold{CornerShade:}\italic{\bold{ 8}

}\leftindent{ A number from 0 (white) to 16 (black) indicating what shade 
pattern should be used for the corners of the window which are left when two 
scrollbars are being used (for instance when viewing a raster or table).

}
\bold{EndZoneShade:}\italic{\bold{ 2}

}\leftindent{ Same as CornerShade but for the end regions of the scrollbars.

}
\bold{BackgroundShade:}\italic{\bold{ 4}

}\leftindent{Same as CornerShade but for the region of the scrollbar not 
covered by the elevator (the normally white rectangle which indicated what 
portion of the document is visible).

}
\bold{ElevatorShade:}\italic{\bold{ 0}

}\leftindent{Same as CornerShade but for the interior of the rectangle which 
shows which portion of the document is visible.

}
\bold{ScrollbarPosition: (no default)}

\leftindent{For text scrollbars this determines whether the scrollbar appears 
on the left or the right.  If it is set to be "right"(capitalization matters 
here) the scrollbar will appear on the right of the text, if it is set to 
anything else the scrollbar will appear to the left.

}
\bold{StartScrollTime: \italic{integer}}

\leftindent{This value is used to set the time interval before repeat 
scrolling kicks in.  The value is in milliseconds.  A value of 0 (the default) 
indicates that no repeat scrolling is to be used.}


\bold{ContScrollTime:\italic{ 500}}

\leftindent{This controls how fast repeat scrolling in small increments (line 
size) occurs.  Again it is in milliseconds.}


\bold{MaxContScrollTime:\italic{ integer}

MinContScrollTime: \italic{integer}}

\leftindent{This controls how fast repeat scrolling  in large (page size) 
increments occurs.  Again it is in milliseconds.  Increments between these two 
amounts is done by interpolating between those two values.}


\bold{AdjustScroll: \italic{no}}

\leftindent{If this is set to "yes," then the increment for repeat scrolling 
is constantly recalculated relative to the position of the mouse.  With it on 
you can start scrolling by pages and then move the cursor up toward the top of 
the scroll bar to do more fine scrolling when they get close.  If it is false 
then the repeat scrolling increment is determined by where you first press the 
mouse down in the scroll bar and can not be readjusted.}


\bold{ThumbScroll: \italic{no}}

\leftindent{If this is set to "yes," then the image being scrolled will be 
updated as the user thumbs in the scroll bar with the left mouse down.  The 
right mouse down will always thumb without updating the image.

}}

\section{Recent changes to oscroll

}\leftindent{
Renamed from scroll to oscroll, and made non-default.

}
\section{Related tools}  


Select (highlight) one of the italicized names and choose "Show Help on 
Selected Word" from the pop-up menu to see the help file for:


\leftindent{\helptopic{andrew}\italic{	}(the tour)\italic{

}\helptopic{selecting}\italic{

}\helptopic{preferences}\italic{

}\helptopic{scrolling}\italic{

}\helptopic{panner}\italic{

}\helptopic{menus}}\italic{

}
\begindata{bp,537558784}
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\view{bpv,537558784,367,0,0}
Copyright 1992 Carnegie Mellon University and IBM.  All rights reserved.

\smaller{\smaller{$Disclaimer: This software is part of version 6.1 of the 

Andrew User Interface System and is 

the property of IBM, Carnegie Mellon University, 

and the other copyright holders.  The source 

code of this version is for the sole use of 

the individual named in ./config/allsys.h.  

This source code is not to be redistributed.  

Binary object code compiled or derived from 

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members.  Members may have additional 

distribution rights granted by prior written 

permission of Carnegie Mellon University.



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AND THE OTHER COPYRIGHT HOLDERS

 DISCLAIM ALL WARRANTIES WITH 

REGARD TO THIS SOFTWARE, INCLUDING 

ALL IMPLIED WARRANTIES OF MERCHANT-

ABILITY AND FITNESS. IN 

NO EVENT SHALL  IBM, CARNEGIE 

MELLON UNIVERSITY, OR ANY OTHER 

COPYRIGHT HOLDER BE LIABLE FOR 

ANY SPECIAL, INDIRECT OR CONSE-

QUENTIAL DAMAGES OR ANY DAMAGES 

WHATSOEVER RESULTING FROM LOSS OF

USE, DATA OR PROFITS, WHETHER IN AN

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OF OR IN CONNECTION WITH THE USE OR

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 $

}}\enddata{text,538281852}
