CHCAVAIL (Choice Color/Display Attribute when Available) keyword for display files
CHCAVAIL (Choice Color/Display Attribute when Available) keyword for display files
You use this field-level keyword to specify the color or display attributes to be used when the system is displaying the available choices in a menu bar, push button, selection field, or subfile single-choice or multiple-choice selection list.
The format of the keyword is:
CHCAVAIL([color] [display-attributes])One parameter must be specified.
The color parameter indicates the color of the choice text for a field on a color workstation. The choice text can be specified on the following keywords:
- MNUBARCHC
- CHOICE
- PSHBTNCHC
The choice text can also come from the text displayed for a subfile used as a single choice or multiple choice selection list. The parameter is specified as an expression of the form (*COLOR value).
The valid values for the color parameter are:
Value : Meaning
BLU : Blue
GRN : Green
PNK : Pink
RED : Red
TRQ : Turquoise
YLW : Yellow
WHT : White
If the color parameter is not specified, the default color for the available choices in a menu bar is green. The default color for the available choices in a selection field is green. This parameter is ignored on a monochrome workstation.
The display-attribute parameter indicates the display attributes of the choice text specified on the MNUBARCHC or CHOICE keyword for the field. The parameter is specified as an expression of the form (*DSPATR value1 <value2 <value3…>>).
The valid values for the display attributes are:
Value : Meaning
BL : Blink
CS : Column separator
HI : High intensity
ND : Nondisplay
RI : Reverse image
UL : Underline
The default display attribute in a menu bar is high intensity. The default display attribute in a selection field is normal (or low) intensity.
Note: Display attributes CS, HI, and BL can cause fields on 5292, 3179, 3197 Models C1 and C2, 3477 Model FC, 3486, 3487 Model HC, and 34881 workstations to appear as color fields. Separator lines do not appear when display attributes HI, RI, and UL are used.
The CHCAVAIL keyword is allowed on a field only if the field has one or more PSHBTNCHC, CHOICE, or MNUBARCHC keywords. It is also allowed on a subfile control record if the subfile control record uses either the SFLSNGCHC or SFLMLTCHC keywords.
Option indicators are valid for this keyword.
Example 1
The following example shows how to specify the CHCAVAIL keyword. In the example, the choices in the menu bar, if available, are displayed in yellow on a color display. For a monochrome display, the menu bar is the default color (green) at high intensity.
|....+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A R RECORD MNUBAR
A F1 2Y 0B 1 2
A MNUBARCHC(1 PULLFILE 'File ')
A MNUBARCHC(2 PULLEDIT 'Edit ')
A CHCAVAIL((*COLOR YLW))
AExample 2
In the following example, the available choices for the selection field are displayed with underlines.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A R RECORD
A F1 2Y 0B 2 5SNGCHCFLD CHECK(ER)
A CHOICE(1 'Choice number 1')
A CHOICE(2 'Choice number 2')
A CHCCTL(1 &CHCCTL1);
A CHCCTL(2 &CHCCTL2);
A CHCAVAIL((*DSPATR UL))
AExample 3
In the following example, the single choice selection list is displayed in yellow on a color display. The available choices are also underlined.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A R SFLREC SFL
A CTLFLD 1Y 0H SFLCHCCTL
A R SFLCTLRCD SFLCTL(SFLREC)
A SFLSNGCHC
A :
A :
A CHOICE(1 'Choice number 1')
A :
A :
A CHOICE(2 'Choice number 2')
A :
A :
A CHCAVAIL((*DSPATR UL))
A CHCAVAIL((*COLOR YLW))1 Dependent on the monitor attached to the display device.