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DEMO.SCN 22-Dec-1985 02:54 1k
GENERAL.INC 09-Feb-1986 02:21 8k
HELP.SCN 07-Feb-1986 01:59 1k
NIMBUS.TXT 06-Sep-1989 18:22 1k
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PC_ART.DOC 10-Jan-1986 10:53 26k
PC_ART.EXE 09-Jan-1986 11:30 79k
PC_ART.IMG 04-Jan-1986 10:06 1k
PRTDOC.BAT 04-Jan-1986 10:07 1k
READ.ME 04-Jan-1986 10:09 1k
READ1ST 15-Feb-1986 10:02 2k
SCNDSIGN.COM 15-Feb-1986 06:34 29k
VAR.SCN 09-Feb-1986 02:06 1k
ScnDsign
Program ScnDsign
By: Iddo L. Enochs
Route 3, Box 322
Summit, Ms. 39666
TABLE OF CONTENTS
INTRODUCTION.......................................... 1
MAKING A BACK-UP COPY................................. 2
FILES ON SCNDSIGN DISK................................ 3
SOME DEFINITIONS...................................... 3
GETTING STARTED....................................... 3
CHANGING ATTRIBUTES................................... 5
CENTERING A LINE...................................... 5
GRAPHICS AND DUPLICATING CHARACTERS................... 5
MOVING A BLOCK OF SCREEN.............................. 6
INSERTING A LINE...................................... 6
DELETING A LINE....................................... 6
SAVING A SCREEN ON DISK............................... 7
ENDING THE PROGRAM.................................... 7
DEFINING VARIABLES.................................... 7
DELETING A VARIABLE................................... 8
INSERTING A VARIABLE.................................. 8
SAVING THE VARIABLE INFORMATION....................... 8
RETURNING FROM VARIABLE DEFINITION TO MAIN PART....... 9
RECALLING THE VARIABLE INFORMATION.................... 9
VARIABLE FORMATTING................................... 9
COMPILING AND RUNNING THE SCREEN PROGRAM.............. 9
DEFAULT VARIABLE VALUES...............................10
RESTRICTING VARIABLE ENTRY............................11
USING VARIABLE ARRAYS IN YOUR PROGRAM.................11
CONCLUSION........................................... 13
Page 0
ScnDsign
INTRODUCTION:
Welcome to the Program ScnDsign. First of all, I should
tell you a few things about the program and a few things that
the program is not. One of the tedious parts of programming
is the design and lay-out of screens for input of data. This
program will enable you to do that with a minimum of effort.
You can design the screen just as you want it to appear in
your program. You can specify where and what type of
variables you wish to enter when running the program and
ScnDsign will take care of the details for you. In fact,
ScnDsign will actually write the code in Turbo Pascal for you
so that you have only to compile and run it. The screens will
be saved on disk in condensed form so that they occupy a
minimum amount of disk space. The program created by ScnDsign
will display the screen you designed and will then accept
only the characters indicated by the type of variable you
specify. As an example, if you specify that a variable at a
particular location is a Real variable, your program will
accept only numerals and a decimal point at that entry point.
This program is distributed under the Freeware concept.
That is, you are free to use it without charge and to make
copies for anyone else. If you find it useful, please send a
contribution to the address below. The suggested amount is
$25.00 for which I will be glad to send you a copy of the
source code.
Iddo L. Enochs
Rt.3, Box 322
Summit, Ms. 39666
Please send a copy of this document with the program.
You are requested not to send copies of the scource code, if
you have it. Thanks for making the Freeware program work.
To experienced computer users I apologize if this
documentation seems a little pedestrian. However, I have
written it with the beginner in mind hoping I can save him
some of the grief I well recall when I was trying to
understand a program the instructions to which were seemingly
written in Swahili. I have also tried to keep the computer
jargon to a minimum.
In order to use the program, it is necessary that you be
familiar with Turbo Pascal by Borland International and know
how to edit, compile and run pascal program files with this
program.
The program is written in Turbo Pascal and generates
Turbo Pascal code for use in the program you are creating.
The program is written specifically for the IBM PC with a
Monochrome Display & Printer adapter and will not work on all
of the compatibles nor on PC's with the color/graphics
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ScnDsign
adapter, although I feel sure the scource code for the
program could be changed so that it would work properly by
someone knowledgeable. Having access only to a Monochrome
Display & Printer adapter, I didn't try.
MAKING A BACK-UP COPY:
To begin with, make one or more back-up copies of your
program disk. You can do this if you have only one disk drive
in the following manner.
1. Place your DOS diskette in your drive and at the DOS
prompt of A>_ type
FORMAT B:/S
and press [Enter].
The message "Insert new diskette for drive B:
and strike any key when ready"
will appear.
2. Remove you DOS diskette and put a blank disk into the
drive and strike any key. DOS will format your disk.
Using the /S option causes DOS to install DOS system
files on the diskette so that it can be used without
having to switch to a separate DOS diskette from time
time.
3. Follow the instructions on the screen until you get
another DOS prompt.
4. Then insert the ScnDsign disk in your drive and type
COPY *.* B:
and press [Enter].
5. Follow the directions with the understanding that the
ScnDsign disk is the scource disk and the newly
formatted disk is the target disk.
6. All of the files on your ScnDsign disk will now be
copied to the newly formatted disk.
With two disk drives the copying process is slightly
simpler.
1. With your DOS disk in drive A and a blank disk in
drive B ,at the DOS prompt of A>_ type
FORMAT B:/S
and press [Enter].
2. Follow the instructions until you get another DOS
prompt of A>_.
3. Then insert the ScnDsign disk in drive A and type
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ScnDsign
COPY *.* B:
and press [Enter].
4. All of the files on your ScnDsign disk will now be
copied to the newly formatted disk in drive B.
FILES ON THE SCNDSIGN DISK:
You will find the following files on your ScnDsign disk.
1. ScnDsign.com This is the compiled program for
designing screens.
2. Help.scn This is the help screen (designed with the
ScnDsign program) which is used to give you helpful
information when using the ScnDsign program.
3. Var.scn This is a screen used in the Define
Variable part of the program.
4. Demo.scn This is a demonstration screen to give you
an example of the screens you can design.
5. General.Inc This file is used with the program file
which is generated by the ScnDsign program. This file
will be "Included" at the time the program file (the
one generated by the ScnDsign program) is compiled.
It contains the various variable definitions,
procedures, etc. which will be needed in the program
file. Don't worry about this file at this time.
SOME DEFINITIONS:
Source code : A program written is some language such as
pascal to be compiled & run.
Current drive : The default drive or the drive that DOS
uses unless directed to do otherwise.
Work Screen : The screen you are designing.
GETTING STARTED:
Without further ado let's get started. I will take you
through a brief session using most of the features of
ScnDsign and then cover some of the finer points later on.
The files ScnDsign.com, Help.scn, and Var.scn must all
be on your current drive before beginning. To start the
program, just type SCNDSIGN and [Enter] at the DOS prompt
with the working copy of your program in drive A. The
program will load itself and will then advise you that it is
reading the two screen files (Help.scn and Var.scn) into
memory. After the screens are read into memory, the message
"Press the Escape twice for help" will appear on the screen.
Also, the message "Press any key to continue" will appear.
Press any key (the spacebar for example) and the screen will
go blank. You are ready to begin the session.
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ScnDsign
To see how the Help screen is activated, press the
Escape key twice and the Help screen will appear instantly.
You will notice that there is no disk access. The Help screen
is merely moved from one area of memory to the screen. The
Help screen should be pretty well self-explanatory and covers
the functions when designing the screen and when in the Move
Block procedure part of the program (more about that later).
Incidentally,the Help screen cannot be called up later on
when you get into the Define Variable part of the program,
but it is not needed then as the Var.scn being used at that
time has all of the help information you will need.
The Help screen is a good example of the type of screen
you can quickly and easily design with the ScnDsign program.
Notice the use of intense characters at some points and the
use of the blinking B, both of which are easy to make as you
will soon see.
The IBM screen occupies a total of 4000 bytes of memory
since there are a total of 25 lines times 80 columns on the
screen, each of which position occupies one byte of memory,
or a total of 2000 bytes and a like amount of bytes of
Attributes which go with each of the screen positions.
However, if you check the Help.scn file you will notice that
it occupies only 1335 bytes of memory on the disk. This is
because the screen information is in condensed form when it
is saved to disk by the ScnDsign program.
You might like to see one other example of a screen
designed with this program before proceeding with this
session. If so, press any key(the space bar will do) to get
back to the main part of the program. Then use F5 to display
a screen from a disk file. You will be told that proceeding
will overwrite what may be on the screen at the time and
asked if you do wish to proceed. Answer with a "Y". You
will be asked for the name of the screen filename you wish to
display. Respond with the name "Demo". The Demo screen should
appear on your screen. Again notice the use of intense
characters at some positions on the screen and the use of a
border around a portion of the screen.
Now you can clear the Demo screen in order to start
designing your very own screen. An easy way to clear the
screen is to position the cursor on the topmost line on which
there are characters and to then press F3 which will delete
that line. Continue to hold F3 down and successive lines will
be deleted until the screen is cleared. You can then begin
using the program to design the screen as you see fit. The
four arrow keys work just as they normally do; that is, they
move the cursor around the screen without destroying what is
on the screen. The Enter key acts as a line feed. The
Backspace key backs up the cursor and deletes the character
to the left of the cursor. The Delete key deletes the
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ScnDsign
character at the cursor position and moves the line to the
right of the cursor one position to the left. The Insert key
toggles the program between the insert mode and the overwrite
mode. When in insert mode the cursor will be enlarged so that
you will be aware the insert mode is on.
CHANGING ATTRIBUTES:
For an exercise in screen design, lay out the screen
approximately as shown below, placing it anywhere on the
screen. (We will use the Move Block part of the program to
center it later on) Before typing the title "Demonstration
Screen", use F4 to change the Attribute mode to intense. When
you do so, a menu will appear on the screen giving you the
option of selecting various Attribute options. Select number
five by entering the numeral five and pressing the [Enter]
key. You will then notice that selection number five will
intensify on the screen indicating that this option has been
selected. Then select option number six in order to return
to the program. Your Work Screen will instantly reappear.
From now until you change Attribute again, what you write on
the screen will appear in the intensified form.
Demonstration Screen
This is an Integer Variable :
This is a Real Variable :
This is a String Variable :
This is a Boolean Variable :
CENTERING A LINE:
With the cursor on the line where you have just written
"Demonstration Screen", use F1 to center the line on the
screen. Change Attribute to Normal before completing the rest
of the screen.
GRAPHICS AND DUPLICATING CHARACTERS:
Now we will place a border around the screen you have
designed. Place the cursor at the position you want the
upper left corner of your border, hold down the Alternate key
with your left hand and enter the numerals 201 using the
numerical pad. Then release the Alternate key. The ASCII
character 201 should appear on the screen (a double-lined
corner emblem). Now, at the screen position immediately to
the right of this last character, enter the ASCII character
205 in like manner. It would be laborious indeed if you had
to enter each character in the same manner all around the
border. That is where the Duplicate Character facilities come
in handy. Position the cursor under the last character you
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ScnDsign
entered (two horizontal lines). Then press F7. If you
continue to hold the F7 key down, these horizontal lines will
be duplicated across the screen. When you get to the point
where the upper right corner of the border should be, enter
the ASCII character 187. Immediately below this character,
enter the character 186 for two vertical lines. Position the
cursor under this character and duplicate downward by using
the Shift and the F7 keys. That is, hold the shift and the F7
keys down at the same time. Using similar methods, you can
now complete the left and lower sides of the of the border.
The ASCII values for the lower left and lower right corners
of the double lined border are 200 and 188, respectively.
In order to do more graphic work you might wish to get
access to all of the ASCII Character codes. They are in
Appendix G of the IBM Basic Manual and in the Sidekick
Program by Borland International among other places. You can
then use the Alternate key together with the numeric pad to
generate any of these characters you may wish. Remember that
you can only duplicate characters downward and to the right
but this is no impediment. Just start at the top or to the
left of the line of characters you wish to make.
MOVING A BLOCK OF SCREEN:
If your border is not quite centered on the screen, we
will now use the Move Block part of the program to center it.
Press the F9 key. This gets you into the Move Block part of
the program. You will be instructed to position the cursor
at the upper left corner of the block to be moved and to then
press F1. Do so. You will then be instructed to move the
cursor to the lower right corner of the block and to then
again press F1. Do so. Reverse video will then cover the
block you have outlined. You may then use the four arrow
keys to move the block around the screen. Do not worry about
running off the screen as the block movement will stop when
the block runs into the limits of the screen. One note of
caution though; the movement of the block will obliterate
anything in it's path. Now center the block you have outlined
by using the four arrow keys. To return to the main part of
the program, press F10. If you care to do so, you may then
re-position the writing inside the border by using the method
just outlined.
INSERTING A LINE:
To insert a line, merely use F2. Be aware that if there
are characters on line 25(the last line on the screen), these
characters will be lost when a new line is inserted.
DELETING A LINE:
Deleting a line is done with F3.
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ScnDsign
SAVING A SCREEN ON DISK:
If you don't have any more work to do on your screen, it
can be saved to disk. To save a screen to disk file, use F6.
You will be prompted for the file name. Name the file "Demo2"
for the screen you have just designed. Be sure to include the
drive designation if the drive you wish to use is not the
current drive. Do not include the extension since the
extension .scn will automatically be added. The Help.scn and
Var.scn are examples of screen file names. Also, remember
that if you use the name of an existing file name, that file
will be overwritten. You should follow the usual rule of
saving your work to disk often. Incidentally, it is not
necessay to save your disk before getting to the Define
Variable part of the program, but it is good practice to do
so. One reason for doing so is that you will have already
named your Screen file name and the same name can be used for
the Variable file names, which is recommended.
ENDING THE PROGRAM:
To end the program you press the F10 key. However, don't
do so until you have defined your variables. When you do end
the program, you will be given the opportunity to save the
work screen and to define your variables if you have not
already done so.
DEFINING VARIABLES:
To define the variables now that you have designed you
screen, press F8. The Var.scn will appear almost immediately.
The instructions and explanations on the Var.scn should
enable you to use this part of the program without much
further help.
At position one in the variable table, enter the name of
your first variable, IntVar for example. You may use as many
as ten characters in the variable name. When prompted for the
type of variable, enter I for integer. You will immediately
be taken from the Var.scn to the screen you have just
designed for positioning the place on the screen at which the
IntVar variable will be entered. Move the cursor immediately
to the right of the colon after where the screen shows "This
is an Integer Variable". Then press F1 to tell the program
that this is where the variable entry point will start. A
single digit (the last digit of the variable number) will
appear in reverse video. You will then be prompted to
position the cursor at the point where the entry point ends
and to press F1 again. The rest of the variable space will
be filled with digits. To return to the variable screen,
merely press any key such as the space bar. If you want a
variable with a length of one , you can enter F1 the second
time at the same position you entered the first F1.
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ScnDsign
There are a few things to notice about this part of the
program. First of all, you can position the variable where
there are characters on the screen but these characters will
be overwritten by the variable. This feature was included
purposefully so that you may undeline the area in which a
variable is to be entered if you so wish. Second, the cursor
will not move off the line where the first F1 is entered.
Third, the second F1 will not be accepted unless the cursor
is at or to the right of the first F1 position.
You may select one of four types of variables; integer,
real, string and boolean. If you select boolean, you will be
unable to move the cursor after entering the first F1 since a
boolean variable has a length of one. The boolean variable
entry will accept only the letters Y or N.
In like manner, name and position the other three
variables using the names RealVar, StrVar, and BolVar for
example. Also specify that variable two is a real variable,
variable three is a string variable, and variable four is a
boolean variable. When you have completed defining all four
variables, you will want to save the variable information on
a disk file. You may define up to total of eighty variables.
To amend a variable entry, merely position the cursor at
that variable position in the Variable table using the up and
down arrow keys. If you want to change the name of the
variable, type in the new name and then proceed just as you
normally do. If you don't wish to change the name, just hit
the Enter key and then proceed just as you normally do.
DELETING A VARIABLE:
To delete a variable, use F3 which is the same key you
used to delete a line in the main part of the program.
INSERTING A VARIABLE:
To insert a variable at a particular position, position
the cursor at that position in the variable table by using
the up and down arrow keys and then enter F2. This is the
same key used in the main part of the program to insert a
line. A blank will be inserted in the variable table at that
point so that you may then define the variable as you see
fit.
SAVING THE VARIABLE INFORMATION:
To save the variable information you have just entered,
press F6. You will be asked if it is allright to use the same
file name as the Screen file name (with a different
extension) and instructed to name the files if it is not
allright. It simplifies matters if you use the same name for
you Screen file and the two Variable files. The extensions on
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ScnDsign
the name will be different for each of the three files saved.
Since you have named you Screen "Demo2", let this be used for
the Variable file names also. Two files will be saved on
disk. One will be named Demo2.tbl containing the variable
information just entered. This file can be recalled later to
retrieve the information saved. The second file will be named
Demo2.pas and will be a file written in Turbo Pascal for use
in your program which uses the screen you have designed.
You will end up with three files named Demo2.scn, Demo2.tbl,
and Demo2.pas. The three files (1) contain the information
for retrieving the screen itself, (2) contain the variable
information and (3) contain a Turbo Pascal file you can use
to run a program using the screen you have designed. The
Demo.tbl file is not needed in order to compile and run the
program file which will be generated by the ScnDsign program,
but it can be used to recall the variable information if you
use the ScnDsign program for further work on your Demo2
program.
RETURNING FROM VARIABLE DEFINITION TO MAIN PART OF PROGRAM:
To return to the main part of the program, press the F10
key. You will be given the oportunity to save the variable
information, if you have not already done so.
RECALLING THE VARIABLE INFORMATION:
While you are in the Defining Variable part of the
program, you can recall the variable information which was
saved earlier by pressing F5. You will be prompted for the
name of the file containing this information. Be sure to
specify the drive designation if different from the current
drive. After the file name is properly specified, the
varible information will be read into the variable table.
VARIABLE FORMATTING:
The program generated by ScnDsign will write real
variables to the screen with two digits after the decimal
point. This can be changed easily by editing the program so
that either more of less digits will appear after the decimal
point.
COMPILING AND RUNNING THE SCREEN PROGRAM:
Now that you have designed your screen and have
generated a program file to use the screen and variable
information, we will see how all of this is put together. The
Demo2.pas file that was generated by the program will have a
line which reads "{$I General.inc}". This is a directive to
the compiler to include the General.inc file at this point
when the Demo2.pas file is being compiled. You might wish to
read the chapter in the Turbo Pascal reference manual on
Including files if you wish further explanation. It is
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ScnDsign
imperative that you have the General.inc file on the current
disk drive so that it can be included. As mentioned above,
the General.inc file contains the general information, types,
procedures ,etc. that will be needed by the program you have
generated with the ScnDsign program. You might wish to call
up the General.inc file with your editor in order to look it
over. It contains some useful procedures which might be of
use to you in other programs. Now compile the Demo2.pas file
and run it. Of course the Demo2.scn must be on the current
drive when the program is run. The program will read the
Demo.scn file and display it on the screen. It then will
proceed to read in the four variables at the appointed
positions on the screen accepting only appropiate characters
at the points the variables are read on your screen.
DEFAULT VARIABLE VALUES:
You will notice that the Demo2.pas program sets the
initial values of the all but the boolean variables in the
program. The numeric variables are set to zero and the
string variables are set to null values. This is called
initializing in computer jargon. This is done for a couple
of reasons at least one of which could be important to you in
designing your program.
First of all, if you wish not to make entries for
certain variables, you may just hit the Enter key at the
point where the variable is to be entered when running the
program. If the initial values had not been set when you hit
the Enter key, you might end up with some garbage for a
variable value.
Of more importance is the way the program works if you
wish to use default values other than zero or null values for
certain of your variables. Let us assume that you have
thirty variables on your screen and twenty-five of these
variables have default(other than zero or null) values which
are used most of the time when running the program. In order
to save the person who runs the program a great deal of time
you can edit the program with your Turbo Pascal Editor and
set the initial values to these default values. Now, when
someone runs the program and comes to a variable entry point,
he or she can merely hit the Enter key if that variable
default value is acceptable. The three procedures in the
General.inc file which are used for accepting integer, real
and string variables are designed so that hitting the Enter
key will not change the default value of that particular
variable.
To give you and example of this, go back and edit your
Demo2.pas program so that the the IntVar, RealVar, and StrVar
variables have default values of 99, 677.56 and
"Demo", respectively. Now run the program and you will see
that you can merely hit the Enter key at the point these
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ScnDsign
variables are to be entered and the default values will be
accepted.
As I am sure you understand, the program generated by
the ScnDsign program, such as the Demo2.pas program, is
merely the nucleus of the program you will end up with.
You can add to this program, incorporate it into another
program, elaborate on it, or rearrange it as you see fit.
RESTRICTING VARIABLE ENTRY:
As you have seen, the program generated by ScnDsign will
accept only the characters appropriate for the type variable
being entered at that point. Only numerals and a decimal
point will be accepted for real variables, as an example.
However, suppose that you wish to further restrict the entry
to only certain values.
I thought of designing ScnDsign so that this could be
accomplished, but the effort hardly seemed worth the candle.
If you wish to restrict certain of your variables to definite
values, I would suggest doing so in the following manner.
Assume the you wish to restrict your IntVar entry to any
value from 1 through 50 or to 75. Edit the code in your
program file so you have a set as shown and the variable
enrtry routine will end up looking something like the example
below. The rest of the program is omitted for the sake of
simplicity.
Const
OKset : set of byte = [0..50,75];
Repeat
GotoXY(52,10);
Integer_Entry(IntVar,5);
if IntVar not (in OKset) then write(^G);
until IntVar in OKset;
Now your program will not proceed until the proper value
is entered for IntVAr and will beep each time that an
improper value is entered. Incidentally, sets won't work with
real variables, so you will be obliged to use relational
operators to restrict real variables to certain ranges.
I'm sure you get the idea that with the ScnDsign program
as a starter, you can make your final program as elaborate as
you wish.
USING VARIABLE ARRAYS IN YOUR PROGRAM:
I have used some screen design programs which required
you to define each element of an array, a laborious job. If
your program requires an array of variables , it seems easier
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ScnDsign
to me to define one element of the array and to then edit
your program code to take care of the final version of the
array.
As an example, let us assume the your program will
require data entry something like that shown below.
Emp. Number Last Name Salary Department
-------------------------------------------------
344 Smith 12500.00 Maintenance
877 Jones 16750.00 Accounting
463 Devers 22500.00 Procurement
184 Johnston 13000.00 Accounting
(assume there are 16 more lines of data)
You should design your screen just as you would normally
do. When you get to the Variable Definition part of the
program, treat the program as if the first line of data entry
were the only line. Part of the code generated would look
something like the following. I have omitted the code which
initializes the variables and writes these initial values to
the screen. This part of the code can be omitted in the
edited version since there will be no need for initial values
in this type program.
Var
EmpNum : integer;
Salary : real;
LastName,Dept : AnyString;
Begin
GotoXY(6,3);
Integer_Entry(EmpNum,5);
GotoXY(17,3);
String_Entry(LastName,10);
GotoXY(30,3);
Real_Entry(Salary,9);
GotoXY(45,3);
String_Entry(Dept,12);
end.
Now that you have the basic information of where the
variables are placed on the first line of data entry, it is a
relatively simple matter to edit the program changing the
variablees to arrays so that the program takes care of all of
the elements of the array. Your newly edited program would
look something like the following.
Var
EmpNum : array[1..20] of integer;
Salary : array[1..20] of real;
LastName : array[1..20] of AnyString;
kount : integer;
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ScnDsign
Begin
for kount := 1 to 20 do
begin
GotoXY(6,kount + 2);
Integer_Entry(EmpNum[kount],5);
GotoXY(17,kount + 2);
String_Entry(LastName[kount],10);
GotoXY(30,kount + 2);
Real_Entry(Salary[kount],9);
GotoXY(45,kount + 2);
String_Entry(Dept[kount],12);
end;
end.
Now, the program will ask for all 20 lines of data
before ending. Notice that the program now tells the cursor
to go to line number kount + 2 rather than line 3. This is
because kount starts out with one in the first iteration so
the cursor still starts out on line three. Incidentally,
don't use the variable count for iteration as it is used in
the General.inc file and there could be interaction.
Again, a portion of the code was left out for the sake
of clarity. I hope, however, you can see that the program
generated by ScnDsign is the starting point, and that with a
little extra effort you can provide for a large amount of
data entry with no great amount of effort.
CONCLUSION:
There you have it. The program can and will save you a
great amount of time in designing screens and providing for
data entry. It could have been made much more elaborate, but
an effort has been made to keep it simple with the
understanding that frills can be added by editing the basic
program you get. Although I have tested the program at
length, please understand that I cannot be responsible for
any liability for damages or lost profits which may result
from the use of this product.
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