projects / unix-history / blame
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1 | .\" Copyright (c) 1980 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 66e2adb5 | 3 | .\" |
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4 | .\" Redistribution and use in source and binary forms are permitted |
| 5 | .\" provided that the above copyright notice and this paragraph are | |
| 6 | .\" duplicated in all such forms and that any documentation, | |
| 7 | .\" advertising materials, and other materials related to such | |
| 8 | .\" distribution and use acknowledge that the software was developed | |
| 9 | .\" by the University of California, Berkeley. The name of the | |
| 10 | .\" University may not be used to endorse or promote products derived | |
| 11 | .\" from this software without specific prior written permission. | |
| 12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 14 | .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 15 | .\" | |
| 16 | .\" @(#)intro.2 6.2 (Berkeley) %G% | |
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17 | .\" |
| 18 | .sh 1 Variables | |
| 19 | .pp | |
| 20 | Many variables which are used to describe the terminal environment | |
| 21 | are available to the programmer. They are: | |
| 22 | .TS | |
| 23 | expand; | |
| 24 | lw(6m) lw(8n) lw(50n). | |
| 25 | type name description | |
| 26 | _ | |
| 27 | WINDOW * curscr T{ | |
| 28 | .fi | |
| 29 | current version of the screen (terminal screen). | |
| 30 | T} | |
| 31 | WINDOW * stdscr T{ | |
| 32 | standard screen. Most updates are usually done here. | |
| 33 | T} | |
| 34 | char * Def\*_term T{ | |
| 35 | default terminal type if type cannot be determined | |
| 36 | T} | |
| 37 | bool My\*_term T{ | |
| 38 | use the terminal specification in \fIDef\*_term\fR as terminal, | |
| 39 | irrelevant of real terminal type | |
| 40 | T} | |
| 41 | char * ttytype T{ | |
| 42 | full name of the current terminal. | |
| 43 | T} | |
| 44 | int LINES T{ | |
| 45 | number of lines on the terminal | |
| 46 | T} | |
| 47 | int COLS T{ | |
| 48 | number of columns on the terminal | |
| 49 | T} | |
| 50 | int ERR T{ | |
| 51 | error flag returned by routines on a fail. | |
| 52 | T} | |
| 53 | int OK T{ | |
| 54 | error flag returned by routines when things go right. | |
| 55 | T} | |
| 56 | .TE | |
| 57 | .pp | |
| 58 | There are also several | |
| 59 | .q #define | |
| 60 | constants and types | |
| 61 | which are of general usefulness: | |
| 62 | .sp | |
| 63 | .ev 1 | |
| 64 | .ta 11n | |
| 65 | .(b L | |
| 66 | .nf | |
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67 | reg storage class ``register'' (\fIe.g.\fP, \fIreg int i;\fR\|) |
| 68 | bool boolean type, actually a ``char'' (\fIe.g.\fP, \fIbool doneit;\fR\|) | |
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69 | TRUE boolean ``true'' flag (1). |
| 70 | FALSE boolean ``false'' flag (0). | |
| 71 | .fi | |
| 72 | .ev | |
| 73 | .)b | |
| 74 | .lp |