home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Professional
/
OS2PRO194.ISO
/
os2
/
wps
/
graphic
/
spreview
/
readme.txt
< prev
next >
Wrap
Text File
|
1993-10-24
|
3KB
|
64 lines
SuperPreview - (C)opyright 1993 Larry Bank
About SuperPreview
------------------
I wrote SuperPreview as an outlet for my fax/document imaging experience
starting in March of 1992. I have since created a 16-bit OS/2 1.x & Win 3.x
version as well as a 32-bit OS/2 2.x & Win32S version. The 32-bit versions
support full color, the 16-bit versions support only bi-level images. The
reason I started with bi-level image support is because of some very fast
routines I created for uncompressing/compressing and displaying bi-level
images. The images are stored in memory in a compact run-length format and
this allows gigantic images to be viewed without using much system memory and
allows dynamic scaling without loss of performance; you will notice how fast
images load and display. I am currently pursuing marketing of this product
through various channels with additional features such as TWAIN scanner support
and full color. I wanted to use a freeware version as a way to get feedback
from users on various features, as well as let the OS/2 community have a fast,
free image viewing tool. Please send me email (71552,1407) as to what features
you would like to see added/removed as well as your overall impression of the
application. The freeware version of SuperPreview has file saving disabled.
Printing works, but I felt that being able to save might hurt my own
marketing efforts.
Performance & Compatibility
---------------------------
This 16-bit OS/2 app has been tested on OS/2 1.3 on a PS/2 Mod 60 80286 machine
as well as 386 & 486 machines running OS/2 2.1. As far as 32-bit versus 16-bit
performance. Most of the app is written in highly optimized assembly language
and there is no noticeable difference between 16 and 32-bit code. Using 386
features in 16-bit code only speeds it up a tiny bit.
Notes on using SuperPreview
---------------------------
Context sensitive help is available for all menu items by pressing F1.
The only point that needs clarification is the zoom function. When opening
a document. The first page is opened and displayed so that the entire
document fits in the viewing window. To zoom into an area of interest:
1a) Press and hold the left mouse button and drag a box around the area of
interest.
1b) Release the left mouse button. The selection rectangle will remain on
the screen. You may copy the selected area to the OS/2 clipboard, or
zoom in to the selected area by pressing the right mouse button.
2) A single click of the right mouse button will zoom in to 100% view
(one document pixel = one screen pixel) at the spot clicked over if at
other than 100%, or will zoom back out to full page view if already
at 100% view.
Supported File Formats
----------------------
TIFF - all bi-level compression types
OS/2 1.2 BMP
Win 3.X BMP
PCX
DCX
WinFax
QuickLinks II
BitFax
FAXIT
IBM PSEG3820*
IBM & OS/2 are trademarks of International Business Machines Corp.