Text can be information for users, such as field labels.
0 48 57 57
621887882
! 2 312 -3
sedwin_Class
15 12 21 65 1 1 1 0 49 0
bd_prompt
Defining a Field
exp_std
1 105 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[6,13]@fD[Press any key to continue.]
105 0
Now, we will define a field to hold a phone number.
First, we need to lay the field out on the screen.
0 48 57 57
621887906
! 3 500 53
sedwin_Class
14 8 22 73 1 1 1 0 49 0
bd_prompt
Fields
exp_BeamMeUp
1 325 65 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[8,20]@fD[Press any key to continue.]
325 0
Each "#" character defines a writeable position. These are the spaces for the numbers of the phone number. The parentheses, blank space, and hyphen define non-writeable positions. When the field's screen is running, users can enter data at writeable positions, but not in the non-writeables.
We can now define the field.
0
! 4 500 54
sedwin_Class
15 6 22 73 1 1 1 0 49 0
bd_prompt
Field Editing
exp_BeamMeUp
1 308 67 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[7,20]@fD[Press any key to continue.]
308 0
Pressing Enter finishes marking the field and calls the Field Edit box. In the Field Edit box, we give the field its field function. A field function gives a field its personality: whether it will accept numbers, letters, or both; how it will present information to users; and how it will format its data.
0 48 57 57
! 5 485 -3
sedwin_Class
15 10 22 72 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 292 62 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[7,19]@fD[Press any key to continue.]
292 0
We can now test the field to see how it functions. We can do this with Look & Feel's GO mode. GO mode simulates the behavior of a screen as part of a running program. In GO mode, we can enter data into the field's writeables.
Note how the cursor glides unaffected over the non-writeables.0 48 57 57
621815903
! 6 500 55
sedwin_Class
14 7 22 70 1 1 1 0 49 0
bd_prompt
Oops!
exp_BeamMeUp
1 347 62 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[8,19]@fD[Press any key to continue.]
347 0
The field functions as it should, but the field has several problems. First, it has too few positions for the phone number and area code and its window is too small. Also, the field function for the field is string_funcs, which allows users to enter letters and numbers (and not just numbers).
Let's change the shape and pos
! 7 370 -3
sedwin_Class
16 7 21 70 1 1 1 0 49 0
bd_prompt
Field Edit
exp_BeamMeUp
1 168 60 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[5,20]@fD[Press any key to continue.]
168 0
In the field edit box's spec field, we can remove the last writeable from the field. We do this by editing the field's specification (or "spec") in the Field Edit box.0 48 57 57
621816485
! 8 487 -3
sedwin_Class
14 5 21 73 1 1 1 0 49 0
bd_prompt
Field Function List
exp_BeamMeUp
1 276 65 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[7,22]@fD[Press any key to continue.]
276 0
We can select a new field function using the Field Function List. All the standard C-scape field functions are included in the list and you can add your own custom field functions to it.
To allow users to only enter numbers, we must change the field function to digit_funcs.0 48 57 57
621898170
! 9 500 58
sedwin_Class
10 6 19 69 1 1 1 0 49 0
bd_prompt
Field Prompt
exp_BeamMeUp
1 347 58 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,20]@fD[Press any key to continue.]
347 0
We can also attach a prompt string to the field. This will tell users that the field accepts phone numbers.
We attach the prompt string using a field data pointer.
Look & Feel uses field data pointers to attach additional information, such as prompt and validation strings, to fields. You can attach as many data point
! 10 286 -3
sedwin_Class
16 2 18 62 1 1 1 0 49 0
bd_prompt
Back to Go
exp_BeamMeUp
1 83 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[2,17]@fD[Press any key to continue.]
83 0
Let's put the screen back into GO mode and test it again. 0 48 57 57
621816904
! 11 363 -3
sedwin_Class
14 16 19 64 1 1 1 0 49 0
bd_prompt
Calling Help
exp_BeamMeUp
1 158 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[5,11]@fD[Press any key to continue.]
158 0
If we need help, we can call Look & Feel's help system by pressing F1. We can then move from help screen to help screen by selecting keywords in each screen.0 48 57 57
621817094
! 12 351 -3
sedwin_Class
16 15 21 61 1 1 1 0 49 0
bd_prompt
Changing the Screen
exp_BeamMeUp
1 139 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[5,11]@fD[Press any key to continue.]
139 0
We can change this screen in many different ways. For instance, we can change the colors of the field, the background area, or the border.0 48 57 57
621817282
! 13 399 -3
sedwin_Class
2 2 6 75 1 1 1 0 49 0
bd_prompt
Changing Colors
exp_BeamMeUp
1 194 72 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[4,23]@fD[Press any key to continue.]
194 0
This is Look & Feel's color interface. It appears when you are changing the color of screen's background, fields, or border. You can also change a field's colors, or those of a region of text.0 48 57 57
621817713
! 14 239 -3
sedwin_Class
19 1 21 43 1 1 1 0 49 0
bd_prompt
A New Border
exp_BeamMeUp
1 35 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[2,8]@fD[Press any key to continue.]
35 0
Let's give the screen a new border.0 48 57 57
622335597
! 15 226 -3
sedwin_Class
18 15 20 63 1 1 1 0 49 0
bd_prompt
Yecch!
exp_BeamMeUp
1 26 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[2,11]@fD[Press any key to continue.]
26 0
The old border was better!0 48 57 57
621817820
! 16 273 -3
sedwin_Class
15 15 19 63 1 1 1 0 49 0
bd_prompt
Generate Source
exp_BeamMeUp
1 64 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[4,11]@fD[Press any key to continue.]
64 0
That's better.
Now, let's generate source code for the screen.
0 48 57 57
621892722
! 17 317 -3
sedwin_Class
12 3 17 51 1 1 1 0 49 0
bd_prompt
View the Source
exp_std
1 115 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[5,13]@fD[Press any key to continue.]
115 0
The source code has been generated.
Now, we can view our newly created source code with Look & Feel's text editor.0 48 57 57
622335761
! 18 410 -3
sedwin_Class
7 15 13 63 1 1 1 0 49 0
bd_prompt
A New Screen
exp_BeamMeUp
1 206 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[6,11]@fD[Press any key to continue.]
206 0
We will now create a more complex screen, the "You Rate It" screen. This screen has several different kinds of data entry areas, and all of them use standard Look & Feel functions to define their behavior.0 48 57 57
621818340
! 19 393 -3
sedwin_Class
7 15 14 61 1 1 1 0 49 0
bd_prompt
Test It.
exp_BeamMeUp
1 193 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[7,10]@fD[Press any key to continue.]
193 0
This screen now has fields for accepting monetary values, displaying ranges, holding dates, toggling between "Yes" and "No", and holding names or words.
Let's simulate it and see how it works.0 48 57 57
621818605
! 20 307 -3
sedwin_Class
16 15 20 63 1 1 1 0 49 0
bd_prompt
Yay!
exp_BeamMeUp
1 110 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[4,11]@fD[Press any key to continue.]
110 0
Well, that was a real smash! For even greater functionality, we can make a text editor part of "You Rate It".0 48 57 57
621818799
! 21 264 -3
sedwin_Class
7 15 10 63 1 1 1 0 49 0
bd_prompt
Testing the Editor
exp_BeamMeUp
1 56 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[3,11]@fD[Press any key to continue.]
56 0
Let's now use GO mode to see how our text editing works.0 48 57 57
621818886
! 22 373 -3
sedwin_Class
132
132
7 15 13 63 1 1 1 0 49 0 48
bd_prompt
Almost Finished
exp_BeamMeUp
1 135 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[6,11]@fD[Press any key to continue.]
14 0
For our grand 6 48
finale114 0
, we will create a piano.
First, let's lay out the keyboard using
Look & Feel's line drawing and block commands.0 0
0 48 57 57 15 112
662853732
! 23 456 -3
sedwin_Class
7 15 14 63 1 1 1 0 49 0
bd_prompt
User Functions
exp_BeamMeUp
1 250 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[7,11]@fD[Press any key to continue.]
250 0
All the fields in the piano have the field function "framer_funcs", since it allows the fields to have a user-created function attached to them. We will now attach the user function "lnf_Beep" to each field and set the frequency of the field's beep.0 48 57 57
622152769
! 24 256 -3
sedwin_Class
19 28 22 76 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 65 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[3,11]@fD[Press any key to continue.]
65 0
We can now put the piano into GO mode and play a few tunes on it.0 48 57 57
621894906
! 25 500 56
sedwin_Class
5 11 20 67 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 364 55 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[15,15]@fD[Press any key to continue.]
364 0
Thanks for watching.
You can continue to use Look & Feel after this demo, although you cannot save any files.
Press F10 for Look & Feel's Main menu.
To run Look & Feel without playing the demo, type
lnfdemo -d
at your operating system prompt. For more information, consult Look & Feel's help system, or call Oakland Group at
! 26 279 -3
sedwin_Class
17 15 20 68 1 1 1 0 49 0
bd_prompt
Re-editing the Field
exp_BeamMeUp
1 65 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[3,14]@fD[Press any key to continue.]
65 0
Now, let's fix the field using the Field Edit command.
0 48 57 57
621892199
! 27 242 -3
sedwin_Class
19 1 21 49 1 1 1 0 49 0
bd_prompt
Check It Out
exp_BeamMeUp
1 37 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[2,11]@fD[Press any key to continue.]
37 0
Let's see what our changes look like.0 48 57 57
621892656
! 28 318 -3
sedwin_Class
3 15 7 63 1 1 1 0 49 0
bd_prompt
Embedding the Editor
exp_BeamMeUp
1 107 45 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[4,11]@fD[Press any key to continue.]
107 0
We can now embed the text editor window within our "You Rate It" screen by using the Nesting-Embed command.0 48 57 57
621894362
! 29 445 -3
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
Source Code
exp_BeamMeUp
1 242 47 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
242 0
The source code generated by Look & Feel will create a screen that is visually and functionally identical to the screen you have edited.
You can compile the source code and link it with an application to add screens quickly to your programs.0 48 57 57
621896933
! 30 500 57
sedwin_Class
7 6 18 66 1 1 1 0 49 0
bd_prompt
Screen Files
exp_BeamMeUp
1 478 57 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[11,17]@fD[Press any key to continue.]
478 0
In addition to generating source code, Look & Feel can save screens to screen files. Your application programs can load screens in from a screen file and use them as if they were created with source code. With this technique, you can write programs whose screens can be designed, tested, and edited by Look & Feel with
! 31 469 -3
sedwin_Class
9 28 18 76 1 1 1 0 49 0
bd_prompt
Field Variable
exp_BeamMeUp
1 263 45 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
263 0
Every field has a variable associated with it. When a user enters information into a field, it is stored in the field's variable.
We can give our field a variable name. When we generate source code for our screen, the name will be used as the field's variable.0 48 57 57
621900467
! 32 296 -3
sedwin_Class
15 3 19 51 1 1 1 0 49 0
bd_prompt
Block Attribute
exp_BeamMeUp
1 91 50 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[4,11]@fD[Press any key to continue.]
91 0
We can use the Block-Attribute command to change the colors of the ebony keys on our piano.0 48 57 57
621902629
! 33 239 -3
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800593
! 34 239 -3
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800598
! 35 94 -3
801 s39
4 801 s4
5 801 s5
6 801 s6
7 801 s7
8 801 s8
9 801 s9
! 36 500 51
sedwin_Class
5 6 17 71 1 1 1 0 49 0
bd_prompt
What Is Look & Feel?
exp_BeamMeUp
1 527 65 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[12,21]@fD[Press any key to continue.]
527 0
Look & Feel is a visually oriented screen designer and code generator. It provides a simple and powerful method for creating and modifying screens, so you can use it to experiment with various interfaces for your applications before selecting a final one.
With Look & Feel, you can create titles, data entry fi
! 37 465 -3
sedwin_Class
6 15 15 63 1 1 1 0 49 0
bd_prompt
About This Demo
exp_BeamMeUp
1 258 46 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
258 0
This demo will playback a pre-recorded Look & Feel session in which a few elementary data entry screens were created to show some of the basic features of Look & Feel.
At the end of this demo you will have the opportunity to explore Look & Feel on your own.0 48 57 57
622336278
! 38 316 -3
sedwin_Class
6 13 11 68 1 1 1 0 49 0
bd_prompt
Let's Go
exp_BeamMeUp
1 113 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[5,16]@fD[Press any key to continue.]
113 0
Let's begin by creating a sample data entry screen.
First, we'll open a new screen with the Screen-Open
command.0 48 57 57
622337751
! 39 239 -3
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800614
! 40 239 -3
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800625
! 41 239 -3
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800629
! 42 239 41
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800644
! 43 239 42
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800652
! 44 239 43
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800656
! 45 239 44
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800659
! 46 239 45
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800680
! 47 239 46
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800683
! 48 239 47
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800687
! 49 239 48
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800691
! 50 239 49
sedwin_Class
7 15 16 63 1 1 1 0 49 0
bd_prompt
exp_BeamMeUp
1 46 32000 4 0 0 7340032 32 32
-1 -1 0 1 0
menu_funcs
void
@p[9,11]@fD[Press any key to continue.]
46 0
0 48 57 57
621800698
! 51 239 -3
elds, text editors, and menuing systems (including pulldown and nested menus). Since Look & Feel is a "wysiwyg" editor, the screens you draw will look the same as the screens you will have in your finished program.0 48 57 57
622336164
! 52 5 -3
one
! 53 23 -3
48 57 57
621888865
! 54 13 -3
621889505
! 55 44 -3
ition of the screen.0 48 57 57
621889079
! 56 57 -3
(800) 233-3733 or (617) 491-7311.0 48 57 57
621902824
! 57 182 -3
out having to continually revise your source code.
All the screens that Look & Feel uses are read in from a screen file and were developed using Look & Feel.0 48 57 57
