* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************
- * @Id: curs_util.3x,v 1.26 2008/10/11 20:32:56 tom Exp @
+ * @Id: curs_util.3x,v 1.27 2008/10/25 23:45:41 tom Exp @
-->
<HTML>
<HEAD>
- DEL (character 127) is displayed as <STRONG>^?</STRONG>.
- - Values above 128 are either meta characters (if the
+ - Values above 128 are either meta characters (if the
screen has not been initialized, or if <STRONG>meta</STRONG> has been
- called with a TRUE parameter), shown in the <STRONG>M-</STRONG><EM>X</EM> no-
+ called with a TRUE parameter), shown in the <STRONG>M-</STRONG><EM>X</EM> no-
tation, or are displayed as themselves. In the lat-
ter case, the values may not be printable; this fol-
lows the X/Open specification.
- - Values above 256 may be the names of the names of
+ - Values above 256 may be the names of the names of
function keys.
- - Otherwise (if there is no corresponding name) the
- function returns null, to denote an error. X/Open
+ - Otherwise (if there is no corresponding name) the
+ function returns null, to denote an error. X/Open
also lists an "UNKNOWN KEY" return value, which some
implementations return rather than null.
The corresponding <STRONG>key_name</STRONG> returns a character string cor-
- responding to the wide-character value <EM>w</EM>. The two func-
- tions do not return the same set of strings; the latter
+ responding to the wide-character value <EM>w</EM>. The two func-
+ tions do not return the same set of strings; the latter
returns null where the former would display a meta charac-
ter.
The <STRONG>filter</STRONG> routine, if used, must be called before <STRONG>initscr</STRONG>
- or <STRONG>newterm</STRONG> are called. The effect is that, during those
- calls, <STRONG>LINES</STRONG> is set to 1; the capabilities <STRONG>clear</STRONG>, <STRONG>cup</STRONG>,
- <STRONG>cud</STRONG>, <STRONG>cud1</STRONG>, <STRONG>cuu1</STRONG>, <STRONG>cuu</STRONG>, <STRONG>vpa</STRONG> are disabled; and the <STRONG>home</STRONG>
+ or <STRONG>newterm</STRONG> are called. The effect is that, during those
+ calls, <STRONG>LINES</STRONG> is set to 1; the capabilities <STRONG>clear</STRONG>, <STRONG>cup</STRONG>,
+ <STRONG>cud</STRONG>, <STRONG>cud1</STRONG>, <STRONG>cuu1</STRONG>, <STRONG>cuu</STRONG>, <STRONG>vpa</STRONG> are disabled; and the <STRONG>home</STRONG>
string is set to the value of <STRONG>cr</STRONG>.
- The <STRONG>nofilter</STRONG> routine cancels the effect of a preceding
- <STRONG>filter</STRONG> call. That allows the caller to initialize a
- screen on a different device, using a different value of
- <STRONG>$TERM</STRONG>. The limitation arises because the <STRONG>filter</STRONG> routine
+ The <STRONG>nofilter</STRONG> routine cancels the effect of a preceding
+ <STRONG>filter</STRONG> call. That allows the caller to initialize a
+ screen on a different device, using a different value of
+ <STRONG>$TERM</STRONG>. The limitation arises because the <STRONG>filter</STRONG> routine
modifies the in-memory copy of the terminal information.
- The <STRONG>use_env</STRONG> routine, if used, is called before <STRONG>initscr</STRONG> or
- <STRONG>newterm</STRONG> are called. When called with <STRONG>FALSE</STRONG> as an argu-
- ment, the values of <STRONG>lines</STRONG> and <STRONG>columns</STRONG> specified in the
- <EM>terminfo</EM> database will be used, even if environment vari-
- ables <STRONG>LINES</STRONG> and <STRONG>COLUMNS</STRONG> (used by default) are set, or if
- <STRONG>curses</STRONG> is running in a window (in which case default be-
- havior would be to use the window size if <STRONG>LINES</STRONG> and
- <STRONG>COLUMNS</STRONG> are not set). Note that setting <STRONG>LINES</STRONG> or <STRONG>COLUMNS</STRONG>
- overrides the corresponding size which may be obtained
+ The <STRONG>use_env</STRONG> routine, if used, is called before <STRONG>initscr</STRONG> or
+ <STRONG>newterm</STRONG> are called. When called with <STRONG>FALSE</STRONG> as an argu-
+ ment, the values of <STRONG>lines</STRONG> and <STRONG>columns</STRONG> specified in the
+ <EM>terminfo</EM> database will be used, even if environment vari-
+ ables <STRONG>LINES</STRONG> and <STRONG>COLUMNS</STRONG> (used by default) are set, or if
+ <STRONG>curses</STRONG> is running in a window (in which case default be-
+ havior would be to use the window size if <STRONG>LINES</STRONG> and <STRONG>COL-</STRONG>
+ <STRONG>UMNS</STRONG> are not set). Note that setting <STRONG>LINES</STRONG> or <STRONG>COLUMNS</STRONG>
+ overrides the corresponding size which may be obtained
from the operating system.
- The <STRONG>putwin</STRONG> routine writes all data associated with window
+ The <STRONG>putwin</STRONG> routine writes all data associated with window
<EM>win</EM> into the file to which <EM>filep</EM> points. This information
can be later retrieved using the <STRONG>getwin</STRONG> function.
The <STRONG>getwin</STRONG> routine reads window related data stored in the
- file by <STRONG>putwin</STRONG>. The routine then creates and initializes
+ file by <STRONG>putwin</STRONG>. The routine then creates and initializes
a new window using that data. It returns a pointer to the
new window.
- The <STRONG>delay_output</STRONG> routine inserts an <EM>ms</EM> millisecond pause
- in output. This routine should not be used extensively
- because padding characters are used rather than a CPU
- pause. If no padding character is specified, this uses
+ The <STRONG>delay_output</STRONG> routine inserts an <EM>ms</EM> millisecond pause
+ in output. This routine should not be used extensively
+ because padding characters are used rather than a CPU
+ pause. If no padding character is specified, this uses
<STRONG>napms</STRONG> to perform the delay.
- The <STRONG>flushinp</STRONG> routine throws away any typeahead that has
- been typed by the user and has not yet been read by the
+ The <STRONG>flushinp</STRONG> routine throws away any typeahead that has
+ been typed by the user and has not yet been read by the
program.
</PRE>
<H2>RETURN VALUE</H2><PRE>
- Except for <STRONG>flushinp</STRONG>, routines that return an integer re-
- turn <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> (SVr4 specifies only "an in-
+ Except for <STRONG>flushinp</STRONG>, routines that return an integer re-
+ turn <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> (SVr4 specifies only "an in-
teger value other than <STRONG>ERR</STRONG>") upon successful completion.
Routines that return pointers return <STRONG>NULL</STRONG> on error.
- X/Open does not define any error conditions. In this im-
+ X/Open does not define any error conditions. In this im-
plementation
- <STRONG>flushinp</STRONG>
- returns an error if the terminal was not ini-
- tialized.
+ <STRONG>flushinp</STRONG>
+ returns an error if the terminal was not initial-
+ ized.
- <STRONG>putwin</STRONG>
- returns an error if the associated <STRONG>fwrite</STRONG>
- calls return an error.
+ <STRONG>meta</STRONG> returns an error if the terminal was not initial-
+ ized.
+
+ <STRONG>putwin</STRONG>
+ returns an error if the associated <STRONG>fwrite</STRONG> calls
+ return an error.
</PRE>
projects / ncurses.git / blobdiff