Basic graphical window operations Tutorial - Revision history

Laura at 21:07, 15 July 2013

2013-07-15T21:07:10Z

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	[[Tutorial 2\|Table of Contents]]		[[Tutorial 2\|Table of Contents]]

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			[[Category:Tutorial]]
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Laura at 15:28, 11 July 2013

2013-07-11T15:28:44Z

← Older revision		Revision as of 15:28, 11 July 2013
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	Next: [[Index and Sort facilities Tutorial]]		Next: [[Index and Sort facilities Tutorial]]

	[[Tutorial 2\|Table of Contents]]		[[Tutorial 2\|Table of Contents]]

Laura at 15:28, 11 July 2013

2013-07-11T15:28:20Z

← Older revision		Revision as of 15:28, 11 July 2013
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	{{:Grids Tutorial}}		{{:Grids Tutorial}}

			Next: [[Index and Sort facilities Tutorial]]
	[[Tutorial 2\|Table of Contents]]		[[Tutorial 2\|Table of Contents]]

Laura at 13:57, 11 July 2013

2013-07-11T13:57:28Z

← Older revision		Revision as of 13:57, 11 July 2013
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	===1.5 Grids===		===1.5 Grids===
	{{:Grids Tutorial}}		{{:Grids Tutorial}}

			[[Tutorial 2\|Table of Contents]]

Laura: /* 1.5 Grids */

2013-07-11T13:36:43Z

1.5 Grids

← Older revision		Revision as of 13:36, 11 July 2013
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	===1.5 Grids===		===1.5 Grids===
			{{:Grids Tutorial}}
	Like lists, GRIDS are made of rows and columns and are created using INPUT FIELDS and PRINT FIELDS. However, with grids the user can change information within the cells. This is handy for updating files.

	~~Just like lists, the data in grids can be sorted according to the column header that the user clicks on. And once again this changes the data's appearance but does not change its form in the file.~~

	~~1. Grids also have a header row defined by headings, widths, and forms~~:

	~~00250 PRINT FIELDS "2,2,GRID 10/36,headers": (Mat Headings$,Mat Widths,Mat Forms$)~~

	~~2. Then information must be populated in the grid:~~

	~~03020 PRINT FIELDS "2,2,GRID 10/36, =": (Mat Item$, Mat Color$, Mat Idnum)~~

	Grids ~~use the same primary and secondary flags as lists for population.~~

	~~3. When handling user activities, grids can use the same read and selection types as lists, as seen in the charts above. Grids also have extra options that cannot be used in lists:~~

	~~Read types for grids only:~~
	{\|
	~~\|Cnt\|\|Specify the number of cells specified (see selection types).~~
	\|-
	~~\|Sub\|\|Read the Cell Subscript Values.~~
	\|-
	~~\|Cell\|\|Read each cell specified.~~
	\|}

	~~There is one Selection Type valid for Grids only, which allows the user to edit values in the grid:~~

	{\|
	~~\|Chg\|\|All items changed since the last '=' populate or the last CHG retrieval of cell/row contents.~~
	\|}

	Reopen the program you've been working on in the chapter exercises (using the information from ORDERS.INT), save it under the name GRID1 and change all instances of LIST to GRID. (There are three in our program).

	~~Then run the program. What differences do you see?~~

	~~Now you can select one cell at a time instead of one row at a time, and make changes! Go ahead and try it!~~

	~~Run it again.~~

	Have your changes been saved? (No!?) Next we'll need to change the program to record what you've done. You will need to use the CHG selection type, record the rows with changes into a new array, and then rewrite the rows that were changed into the file. Try to do this alone without looking ahead first.

	~~For help, see the program 1.5 part one, on the Solutions page.~~

	~~Go ahead and run the sample program to try it now! Need more evidence? If you re-run the original program Samplist, will you find your new changes available for selection? (Yes!)~~

	Next, what if you want to add an entire new entry? Remember the primary flags above? Edit your program to add a new record. And then to save the new entry in the file. See part 2 on the solutions page for help.

Laura: /* 1.4 Lists */

2013-07-11T13:34:42Z

1.4 Lists

@@ Line 12: / Line 12: @@
 ===1.4 Lists===
+{{:Lists Tutorial}}
 ===1.5 Grids===

Laura: /* 1.3 Buttons */

2013-07-11T13:33:47Z

1.3 Buttons

@@ Line 9: / Line 9: @@
 ===1.3 Buttons===
-Now that the user has input all the data into your CHAPTER1 program, instead of hitting the escape key, wouldn't it be great to have an exit button? Or a button to complete other actions like print a mailing label or prepare an invoice? Since version 4.15, BR can create buttons on the screen.
+{{:Buttons Tutorial}}
 ===1.4 Lists===

Laura: /* 1.2 Checkboxes */

2013-07-11T13:32:19Z

1.2 Checkboxes

@@ Line 5: / Line 5: @@
 ===1.2 Checkboxes===
-Like radio buttons, checkboxes provide another way to get simple input from the user. However, checkboxes are not grouped, so they allow more than one selection. The user can select one, several, or none of the available choices. Enter the following lines and run them:
+{{:Checkboxes Tutorial}}
 ===1.3 Buttons===

Laura at 13:30, 11 July 2013

2013-07-11T13:30:17Z

@@ Line 1: / Line 1: @@
 ===1.1 Radio Buttons===
-So far, you've learned how to ask the user to enter information using INPUT FIELDS. But what if you only want to know a simple yes or no answer? Instead of typing Y or N or any other option, you can simply provide a radio button or checkbox instead.
+{{:Radio Buttons Tutorial}}
 ===1.2 Checkboxes===

Laura: /* 3. User Activity */

2013-07-11T02:25:53Z

3. User Activity

← Older revision		Revision as of 02:25, 11 July 2013
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	If you run your program now, it will let you select a row (press enter to exit for now).		If you run your program now, it will let you select a row (press enter to exit for now).

	[[image:1.4c.jpg]]		[[image:1.4c.jpg\|550]]

	But what should we do with that selection?		But what should we do with that selection?
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	00019 print selection		00019 print selection

	Now when you exit the list view, it will display the subscript of the row you selected. This information could be saved or used to reference a line for editing or printing in another program.		Now when you exit the list view, it will display the subscript of the row you selected. This information could be saved or used to reference a line for editing or printing in another program.


	====Exercise 1.4====		====Exercise 1.4====