Fast Track 3 - Revision history

Laura: /* Handling User Interaction */

2015-02-02T20:50:33Z

Handling User Interaction

← Older revision		Revision as of 20:50, 2 February 2015
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	Next add a save and edit button.		Next add a save and edit button.

	00340 PRINT FIELDS ~~print fields~~ "23,30,CC 8,,b99" : "Save"		00340 PRINT FIELDS "23,30,CC 8,,b99" : "Save"

	The syntax allows you to position the button, and set an FKEY, 99 in this case, to determine what the button will do, in this case Write the record to a data file. Buttons need something to wait on, one easy way to do this is to have a loop running:		The syntax allows you to position the button, and set an FKEY, 99 in this case, to determine what the button will do, in this case Write the record to a data file. Buttons need something to wait on, one easy way to do this is to have a loop running:
Line 37:		Line 37:
	$1,000 $ 1,000		$1,000 $ 1,000

	FMT is more useful for string manipulation, as it can be used to set case and add punctuation.		FMT is more useful for string manipulation, as it can be used to set case and add punctuation.

	====ERROR HANDLING====		====ERROR HANDLING====

Laura at 21:03, 31 January 2015

2015-01-31T21:03:50Z

← Older revision		Revision as of 21:03, 31 January 2015
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	Input fields – so far we've been working in the command console, but your program users will be handling information through the GUI console. For this, start with print fields and input fields, which use character based positioning to print and receive data from the screen.		Input fields – so far we've been working in the command console, but your program users will be handling information through the GUI console. For this, start with print fields and input fields, which use character based positioning to print and receive data from the screen.

	Print fields~~, using~~ "8,4,c 25":"Customer Name:"		Print fields "8,4,c 14": "Customer Name:"
	Print fields~~, using~~ "12,6,c 10":"Email:"		Print fields "12,4,c 10":"Email:"
	~~input~~ fields~~, using~~ "35,4,c 50":name$		Input fields "8,20,c 50":name$
	~~input~~ fields~~, using~~ "35,6,c 50":email$		Input fields "12,20,c 50":email$

	Then you can write it to a data file using OPEN, WRITE, and CLOSE, as described above.		Then you can write it to a data file using OPEN, WRITE, and CLOSE, as described above.

Laura at 20:49, 31 January 2015

2015-01-31T20:49:40Z

← Older revision		Revision as of 20:49, 31 January 2015
Line 5:		Line 5:
	Input fields – so far we've been working in the command console, but your program users will be handling information through the GUI console. For this, start with print fields and input fields, which use character based positioning to print and receive data from the screen.		Input fields – so far we've been working in the command console, but your program users will be handling information through the GUI console. For this, start with print fields and input fields, which use character based positioning to print and receive data from the screen.

	Print fields, using “8,4,c 25:~~”Customer~~ Name:”		Print fields, using "8,4,c 25":"Customer Name:"
	Print fields, using ~~“12~~,6,c 10:~~”Email~~:”		Print fields, using "12,6,c 10":"Email:"
	input fields, using ~~“35~~,4,c ~~50”~~:name$		input fields, using "35,4,c 50":name$
	input fields, using ~~“35~~,6,c ~~50”~~:email$		input fields, using "35,6,c 50":email$

	Then you can write it to a data file using OPEN, WRITE, and CLOSE, as described above.		Then you can write it to a data file using OPEN, WRITE, and CLOSE, as described above.

Laura: /* INTERNAL FUNCTIONS */

2014-09-10T19:31:51Z

INTERNAL FUNCTIONS

← Older revision		Revision as of 19:31, 10 September 2014
Line 50:		Line 50:
	====INTERNAL FUNCTIONS====		====INTERNAL FUNCTIONS====

	BR has a lot of internal functions built in. For a complete list and descriptions, check the wiki. These functions can be used to alter and handle data bits for you, manipulate forms and other tricks.		BR has a lot of internal functions built in. For a complete list and descriptions, check the [[Internal Functions\|wiki]]. These functions can be used to alter and handle data bits for you, manipulate forms and other tricks.

	NEXT:[[Fast Track 4\|Debugging]]		NEXT:[[Fast Track 4\|Debugging]]

Laura: /* INTERNAL FUNCTIONS */

2014-08-05T21:30:25Z

INTERNAL FUNCTIONS

← Older revision		Revision as of 21:30, 5 August 2014
Line 52:		Line 52:
	BR has a lot of internal functions built in. For a complete list and descriptions, check the wiki. These functions can be used to alter and handle data bits for you, manipulate forms and other tricks.		BR has a lot of internal functions built in. For a complete list and descriptions, check the wiki. These functions can be used to alter and handle data bits for you, manipulate forms and other tricks.

	NEXT:[[Fast Track 4]]		NEXT:[[Fast Track 4\|Debugging]]

	<noinclude>		<noinclude>
	[[Category:Fast Track Tutorial]]		[[Category:Fast Track Tutorial]]
	</noinclude>		</noinclude>

Laura: Created page with "====Handling User Interaction==== Users can access and add information through a variety of ways: Input fields – so far we've been working in the command console, but your..."

2014-08-05T21:30:08Z

Created page with "====Handling User Interaction==== Users can access and add information through a variety of ways: Input fields – so far we've been working in the command console, but your..."

New page

====Handling User Interaction====

Users can access and add information through a variety of ways:

Input fields – so far we've been working in the command console, but your program users will be handling information through the GUI console. For this, start with print fields and input fields, which use character based positioning to print and receive data from the screen.

Print fields, using “8,4,c 25:”Customer Name:”
Print fields, using “12,6,c 10:”Email:”
input fields, using “35,4,c 50”:name$
input fields, using “35,6,c 50”:email$

Then you can write it to a data file using OPEN, WRITE, and CLOSE, as described above.

Next add a save and edit button.

00340 PRINT FIELDS print fields "23,30,CC 8,,b99" : "Save"

The syntax allows you to position the button, and set an FKEY, 99 in this case, to determine what the button will do, in this case Write the record to a data file. Buttons need something to wait on, one easy way to do this is to have a loop running:

01100 print fields "23,30,CC 8,,b99" : "Save"
01200 do
01300 input fields "24,1,c 1": nomatter$
01400 loop While Fkey~=99
01500 if fkey=99 then
01600 rewrite #emailfile, USING emailform: name$, email$
01700 else goto end

Clicking the button will end the loop and do that action you've programmed it to.

For other widgets see: [[Grids Tutorial |Grid]] and [[List Tutorial|List]], [[Radio Buttons Tutorial|Radio Buttons]], and [[Checkboxes Tutorial|Checkboxes]] tutorials.

When displaying data on the screen, the internal functions PIC and FMT use digit identifiers and insertion characters to make the appearance more user-friendly. For example, adding commas and zero suppression into financial expressions:

00010 PRINT USING 20: 1000,1000
00020 FORM PIC($$$,$$$),X 2,PIC($ZZ,ZZZ)
Would return:
$1,000 $ 1,000

FMT is more useful for string manipulation, as it can be used to set case and add punctuation.

====ERROR HANDLING====
One way to handle errors is using error conditions at the end of your statement lines.

Error conditions are keywords which are used to trap errors that occur during program execution. Each error condition keyword identifies one or more types of errors that typically occur during program execution.

ON ERROR is another way to handle errors (a more catch-all method).

RETRY is a command that will restart the program again at the line where the error occurred, while CONTINUE will start at the line just after.

====INTERNAL FUNCTIONS====

BR has a lot of internal functions built in. For a complete list and descriptions, check the wiki. These functions can be used to alter and handle data bits for you, manipulate forms and other tricks.

NEXT:[[Fast Track 4]]

<noinclude>
[[Category:Fast Track Tutorial]]
</noinclude>