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1989-01-04
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19KB
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396 lines
________________________________________________________________
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| TIFFANY |
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| User Manual |
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| Version 1.0 |
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| Copyright (c) 1989, Alan Anderson | |
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|______________________________________________________________|
1. INTRODUCTION
Tiffany records any part, or all, of the Windows display
using the "Tag Image File Format" (TIFF). The image file can
then be used in a variety of desktop publishing or image
manipulation applications.
TIFF, the Tag Image File Format, is a versatile file standard
for recording and transferring raster images. Many image
manipulation programs, desktop publication systems, and
scanners support this popular image file format.
As the Windows operating environment is utilized by more
applications and people, the need to capture screen images
for use in other programs becomes increasingly important.
This is especially critical for software developers, who
require screen images in their product documentation. There
are utilities to copy screen bitmaps to the windows
clipboard. Unfortunately due the large memory requirements
for storing a sizeable bitmap image, these RAM hungry
utilities are often unable to capture large portions of
today's high resolution screen images. Also, these "bitmap
clippers" are useless for transferring images to non-Windows
environments.
2. PRODUCT REGISTRATION
Tiffany is distributed as shareware. Feel free to look over
the Tiffany software and determine if it is useful for you or
your organization. If you do use Tiffany please send a $10
registration/license fee to help support its struggling
author and his continuing quest to produce high-quality, low-
cost software. Please include your name and address if you
wish to be informed when future versions of Tiffany become
available. Send your registration fee, suggestions, and
comments to:
Alan Anderson
Suite #408
3511 Camino Del Rio South
San Diego, CA 92108
For a 5.25" disk containing the Tiffany executable files,
source code, and printed documemtation send $20 to the above
address.
3. USING TIFFANY: A QUICK OVERVIEW
1. Copy TIFFANY.EXE and TIFFLIB.EXE to your working disk.
2. Start Windows and run TIFFANY.EXE.
3. Select the File Name command from the File menu. Type a
name for the image file into the dialog box and press
<Enter>.
4. Using the Region menu, specify the area of the display
you want to capture.
5. Note the activation (hot) key selected in the Activation
menu.
6. Get the Tiffany window out of your way by shrinking it
down to an icon with the Minimize command.
7. Bring the desired image on the screen.
8. Press the activation key to begin creating the TIFF file.
The cursor changes to an hourglass, wait while the file
is being created.
9. When all of the sand has flowed into the bottom chamber
of the hourglass, a message box appears to indicate
completion of the image capture. Press <Enter> to close
the dialog box and continue using windows.
4. SYSTEM REQUIREMENTS
An IBM PC, XT, AT, or PS2 compatible computer running
Microsoft Windows (version 2.0 or later) is required to use
Tiffany. A hard disk is strongly recommended. Images from
any graphics card supported by a Windows screen driver can be
captured by Tiffany.
5. USING TIFFANY: THE DETAILS
5.1 STARTING TIFFANY
Two files are required to run Tiffany: TIFFANY.EXE and
TIFFLIB.EXE. Copy these files to your windows drive and
directory. TIFFANY.EXE is the main program file; TIFFLIB.EXE
contains library routines used by Tiffany. Run Tiffany like
most Windows applications. Start Microsoft Windows. Using
the MS-DOS Executive window change to the drive and directory
holding the files TIFFANY.EXE and TIFFLIB.EXE. Use the
direction keys to highlight TIFFANY.EXE and press <Enter>;
or, with the mouse double click on TIFFANY.EXE.
5.2 MENUS
The Tiffany menu bar contains five drop-down menus: File,
Activation, Region, GrayLevels, and Effects.
5.2.1 File Menu
The File menu contains two commands: File Name and About.
File Name displays a dialog box allowing you to specify the
file name for storing the next image. The file extension
.TIF indicates a TIFF raster image file. Specify a file name
before capturing an image file. If an existing file name is
specified the old file will be overwritten by the TIFF
capture process.
The About command displays a dialog box with program version,
copyright, and registration information.
5.2.2 Activation Menu
The Activation menu lets you choose one of six keys for
initiating the TIFF screen capture (activation keys are also
known as "hot" keys). Select a key that you will not need
while using your other windows applications. The default key
is <F3>. A checkmark is displayed next to the current
setting. If you want to capture an image containing a drop-
down menu do not select an Activation key that uses <Alt> in
conjunction with another key, because pressing <Alt> will
cause an open menu to close!
Selecting Off from the Activation menu will disable TIFF
screen capture without closing the Tiffany window.
5.2.3 Region Menu
The Region menu contains four choices for specifying which
area of the screen is to be captured when the activation key
is pressed. A checkmark is displayed next to the current
setting. Before creating an image file select the
appropriate area. Since the length of time required to
create an image file is proportional to the image area, avoid
capturing any unneeded parts of the screen by choosing the
correct setting from the Region menu.
Active Window is the entire window of the application being
used.
Active Client Window is the part of the current application
window below the menu bar.
Entire Screen is the whole display.
Box allows you to specify a rectangular screen area of the
screen to be captured with the mouse. When you select the
Box command the cursor changes into a crosshair (+). Move
the center of the crosshair to one corner of the rectangle to
be captured and depress the left mouse button. With the
mouse button depressed, drag the crosshair cursor to the
opposite corner of the rectangle to be captured. Release the
mouse button; the cursor returns to its normal shape. As
the mouse is being used to specify the capture box, this
rectangular region is inverted. Tiffany remembers the box
and will capture this rectangular section of the display when
the activation key is pressed.
5.2.4 GrayLevels Menu
The GrayLevels menu lists four options for specifying the
number of bits to be used for each pixel in the TIFF. The
appropriate setting for capturing all possible shades that
can be produced by you video system is automatically set when
Tiffany is started. However you may change this setting to
meet your own needs.
Many PC systems have color video cards and displays; yet,
the vast majority of printers utilized by PC systems cannot
create colored printouts. This poses a problem for screen
capture programs: should the captured image be colored or
gray-scale? Since most TIFF images are ultimately to be
printed out on non-color printers, Tiffany was designed to
convert all screen images to TIFF gray-scales. The number of
possible levels of gray can be chosen from the GrayLevels
menu.
One bit per pixel can create an image with only two levels,
black and white.
Two bits per pixel can create an image with four levels:
black, dark gray, light gray, and white.
Four bits per pixel can create an image with up to 16 gray
levels.
Eight bits per pixel can create an image with up to 256 gray
levels.
There is no reason to select a gray level setting higher than
the default set by Tiffany. If you display system is only
capable of producing 16 different colors/shades, you will not
get a better image by specifying a 8 bit gray scale.
Selecting a gray level setting lower than the default set by
Tiffany may result in the lose of some screen information,
but it will decrease the size of the image file.
5.2.5 Effects Menu
The Effects menu contains commands for adding special effects
to the image file. In the current version of Tiffany the
Effect menu contains only one item: Invert. Selecting
Invert causes a negative TIFF image being saved. The invert
command is a toggle; a checkmark is displayed beside this
menu items when image inversion is turned on. To change back
to a normal (positive) image choose the command once again.
5.3 CAPTURING AN IMAGE
After setting the desired options from the menus, get the
Tiffany window out of your way by shrinking it down to an
icon with the Minimize command. If you are capturing the
entire screen and do not want the Tiffany icon to appear in
your image, hide Tiffany underneath another window. After
setting up the desired screen image press the activation key.
The cursor changes to an hourglass, and Tiffany begins
creating the image file. You can estimate the progress of
the TIFF save by watching the amount of sand in the two
chambers of the hourglass cursor. Wait while the file is
being created. When all of the sand has flowed into the
bottom chamber of the hourglass, a beep sounds and a message
box appears to indicate completion of the image capture.
Press <Enter> to close the message box and continue using
windows.
If you want to recapture to the same file name, press the
activation key again; the old file contents will be
overwritten. To create another TIFF file, use the File Name
command to specify a new file name before pressing the
activation key.
5.4 QUITTING TIFFANY
Select Close from the control menu to deactivate Tiffany and
close the Tiffany window.
6. IMAGE FILE SIZE
Image files created by Tiffany can be very large.
Fortunately the TIFF data in can be compressed to much
smaller sizes with most file archive utilities. Most TIFF
files can be compressed 90 to 95 percent using PKPAK program
by PKWARE.
7. ARCHIVES
The archive file TIFFANY.ARC contains the executable files
(TIFFANY.EXE and TIFFLIB.EXE) and the documentation for
Tiffany (README.TXT). The archive file TIFFANYS.ARC contains
the source code for Tiffany in addition to the executable
files and the documentation.
8. TIFFANY SOURCE CODE
The Tiffany program is documented with detailed comments in
the source code. An brief overview of the program is given
below.
Tiffany is a small model Windows application written in
Microsoft C, version 5.1. The Windows software development
kit version 2.1 and a Microsoft Macro Assembler version 5 are
also required to create Tiffany. The Tiffany application
requires two executable modules: TIFFANY.EXE and TIFFLIB.EXE.
TIFFANY.EXE is the main program file. It contains all of the
program functions other than the activation (hot) key
detection routines. Two files TIFFMAIN.C and TIFFCAP.C
contain the C source code for this module.
TIFFLIB.EXE is the dyna-link library used by Tiffany. The
library contains activation key detection functions. Tiffany
uses a keyboard hook to watch for the activation key. In
order for hook functions to work properly on EMS systems they
need to be contained in a dyna-link library module. TIFFLIB
exports one function to be used by the main module:
SetHotKey(WORD vkNewHotKey, BOOL bAltPressRqd, HWND hWnd);
The window specified during the SetHotKey call is sent a
message when the specified Hot key is pressed. The library
code is very generic; it is an excellent foundation for any
Windows program requiring a hot key.
In a "normal" Windows development environment the following
commands will create the TIFFANY executable files:
MAKE TIFFANY<Enter>
MAKE TIFFLIB<Enter>
The following four files are used to create the library
module (TIFFLIB.EXE):
TIFFLIB. Library MAKE file.
TIFFLIB.DEF Module definition file.
TIFFLIB.C C source code for the library.
TIFFINIT.ASM Assembly code that starts the library.
The following seven program files and 14 cursor files are
used to create the main program module (TIFFANY.EXE):
TIFFANY. Main program MAKE file.
TIFFMAIN.C C source code for initialization and message
polling & processing functions.
TIFFCAP.C C source code for TIFF capture routines.
TIFFANY.DEF Module definition file.
TIFFANY.H Header file with global definitions.
TIFFANY.RC Resource definition file.
TIFFANY.ICO The icon resource.
XHAIR.CUR The crosshair cursor resource.
HG0.CUR to HG12.CUR Cursors for the dynamic hourglass display.
For more information about the Tiffany program see the source
code comments.
9. BUREAUCRATIC NONSENSE
9.1 LICENSE AGREEMENT AND DISCLAIMERS
Take a moment to read the following software license
agreement and disclaimer.
This software is protected by United States copyright law and
international treaties. A limited license is granted to all
users of Tiffany to make copies of and distribute the archive
files, TIFFANY.ARC or TIFFANYS.ARC, if the following
conditions are meet:
1. The files/documentation/programs may not be distributed
in modified form. The license agreements, disclaimers,
shareware information, and copyright notices must be
distributed with Tiffany in unaltered form.
2. No fee, or other consideration, can be charged for
copying or distributing any or all or Tiffany, without
the express written consent of Alan Anderson.
3. All software files and documentation may be may be copied
for archival purposes only.
The author of Tiffany provide no warranties, expressed or
implied, about the functionality, usability, or suitability
of this software for any purpose. Furthermore, the author of
Tiffany is not liable for any damages that may result from
its use, or for problems resulting from the use of software
that utilizes all or part of the Tiffany source code.
No part of this publication or the Tiffany software, may be
reproduced or transmitted, except as outlined above, by any
means without the prior written consent of and Alan Anderson.
9.2 ACKNOWLEDGEMENTS
Microsoft is a registered trademark of Microsoft Corporation.
IBM and IBM AT are registered trademarks of International
Business Machines Corporation.