Defining default TTY attributes
The OPTIONS
defines
default TTY attributes for dialogs and display statements.{
INPUT|
DISPLAY}
ATTRIBUTES
Syntax
OPTIONS {
INPUT ATTRIBUTES ( {
FORM |
WINDOW |
attributes }
)
|
DISPLAY ATTRIBUTES ( {
FORM |
WINDOW |
attributes }
)
}
Usage
OPTIONS INPUT ATTRIBUTES
defines the default color and
terminal effect attributes that will be used in subsequent dialog statement.
OPTIONS DISPLAY ATTRIBUTES
defines the
default attributes for display statements.
The display attributes are based on dumb terminal (i.e. TTY) possibilities, but will be rendered accordingly on GUI mode. Graphical front-ends can be configured to render TTY attributes is a specific way. Instead of TTY based attributes, consider using presentation styles in new developments.
Any display attribute defined by the OPTIONS
statement
remains in effect until the runtime system encounters a statement that redefines
the same attribute. This can be another OPTIONS
statement,
or an ATTRIBUTE
clause in one of the following statements:
The ATTRIBUTE
clause in these statements
only redefines the attributes temporarily. After the window
closes or after the dialog statement terminates, the runtime
system restores the attributes from the most recent OPTIONS
statement.
The FORM
keyword in INPUT ATTRIBUTE
or DISPLAY
ATTRIBUTE
clauses instructs the runtime system
to use the input or display attributes of the current form.
Similarly, you can use the WINDOW
keyword
of the same clauses to instruct the program to use the input or
display attributes of the current window. You cannot combine
the FORM
or WINDOW
attributes
with any other attributes.
This table shows the valid input and display attributes:
Attribute | Description |
---|---|
BLACK, BLUE, CYAN, GREEN,
MAGENTA, RED, WHITE, YELLOW |
The TTY color of the displayed text. |
BOLD, DIM, INVISIBLE,
NORMAL |
The TTY font attribute of the displayed text. |
REVERSE, BLINK,
UNDERLINE |
The TTY video attribute of the displayed text. |