4D v14.3
INVERT BACKGROUND
- 4D Language Reference
-
- User Interface
-
- BEEP
- Caps lock down
- Focus object
- GET FIELD TITLES
- GET MOUSE
- GET TABLE TITLES
- HIDE MENU BAR
- INVERT BACKGROUND
- Macintosh command down
- Macintosh control down
- Macintosh option down
- OBJECT Get name
- OBJECT Get pointer
- PLAY
- Pop up menu
- POST CLICK
- POST EVENT
- POST KEY
- REDRAW
- SET ABOUT
- SET CURSOR
- SET FIELD TITLES
- SET TABLE TITLES
- Shift down
- SHOW MENU BAR
- Tool bar height
- Windows Alt down
- Windows Ctrl down
- Get platform interface
- HIDE TOOL BAR
- SET PLATFORM INTERFACE
- SHOW TOOL BAR
INVERT BACKGROUND
| INVERT BACKGROUND ( {* ;} textObject ) | ||||||||
| Parameter | Type | Description | ||||||
| * | Operator |
|
Allows entry of a variable or object name | |||||
| textObject | Variable, Field |
|
Text variable or field to invert | |||||
INVERT BACKGROUND is used to invert textObject in the form.
The scope of the command is the form being used.
You can use INVERT BACKGROUND when displaying on screen or printing to a dot matrix printer. A postscript printer will not print an inverted background.
You cannot invert a variable in an output form. Avoid using INVERT BACKGROUND on an enterable variable. Entering characters will only partially erase the inverted display.
This example is an object method for a variable in an input form. It tests the value of a field. If the field is positive, the object method does nothing. If the field is negative, the object method inverts the display of the variable in the form:
vAmount:=[Accounts]Amount ` Put the value of field in the variable
If(vAmount<0) ` If it is a negative amount…
INVERT BACKGROUND(vAmount) ` Invert the background
End ifNote: This command, originally created for black and white user interfaces, is now rarely used. You now generally use colors to highlight a field or a variable.
Product: 4D
Theme: User Interface
Number:
93
Created: < 4D v6
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