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lcdexec: parameter support using widgets enabled (currently only marginally

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documented in lcdexec.conf)
This commit is contained in:
marschap
2007-10-13 15:14:26 +00:00
parent 898e21be25
commit b1ddc49221
5 changed files with 174 additions and 170 deletions
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ChangeLog
+1 -1
View File
@@ -33,7 +33,7 @@ v.0.5dev (ongoing development)
* picolcd driver: overhaul USB init for more portability (M. Dolze)
+ curses driver: new option DrawBorder (Bruno Schwander)
* avoid sending duplicate "success" messages in response to menu_add_item
+ lcdexec: parameter support using widgets; hidden behind compile time option
+ lcdexec: parameter support using widgets
* server core: display values in menu for all input MenuEntry types
v.0.5.2
clients/lcdexec/lcdexec.c
+26 -23
View File
@@ -1,12 +1,14 @@
/*
* lcdexec.c
* This file is part of lcdexec, an LCDproc client.
/* \file clients/lcdexec/lcdexec.c
* Main file for \lcdexec, the program starter in the LCDproc suite.
*/
/* This file is part of lcdexec, an LCDproc client.
*
* This file is released under the GNU General Public License. Refer to the
* COPYING file distributed with this package.
*
* Copyright (c) 2002, Joris Robijn
* Copyright (c) 2006, Peter Marschall
* Copyright (c) 2006-7, Peter Marschall
*/
#include <stdio.h>
@@ -26,12 +28,14 @@
#include "menu.h"
#if !defined(SYSCONFDIR)
# define SYSCONFDIR "/etc"
#endif
#define DEFAULT_CONFIGFILE SYSCONFDIR "/lcdexec.conf"
/** information about a process started by lcdexec */
typedef struct ProcInfo {
struct ProcInfo *next; /**< pointer to the next ProcInfo entry */
@@ -95,6 +99,7 @@ static int exec_command(MenuEntry *cmd);
static int show_procinfo_msg(ProcInfo *p);
static int main_loop(void);
#define CHAIN(e,f) { if (e>=0) { e=(f); }}
#define CHAIN_END(e) { if (e<0) { report(RPT_CRIT,"Critical error, abort"); exit(e); }}
@@ -376,7 +381,6 @@ static int process_response(char *str)
exec_command(entry);
}
}
#if defined(LCDEXEC_PARAMS)
else if ((strcmp(argv[1], "plus") == 0) ||
(strcmp(argv[1], "minus") == 0) ||
(strcmp(argv[1], "update") == 0)) {
@@ -431,7 +435,6 @@ static int process_response(char *str)
return -1;
}
}
#endif
else {
; /* Ignore other menuevents */
}
@@ -472,11 +475,9 @@ static int exec_command(MenuEntry *cmd)
const char *argv[4];
pid_t pid;
ProcInfo *p;
#if defined(LCDEXEC_PARAMS)
char *envp[cmd->numChildren+1];
MenuEntry *arg;
int i;
#endif
/* set argument vector */
argv[0] = default_shell;
@@ -484,52 +485,56 @@ static int exec_command(MenuEntry *cmd)
argv[2] = command;
argv[3] = NULL;
#if defined(LCDEXEC_PARAMS)
/* set environment vector: allocate & fill contents */
for (arg = cmd->children, i = 0; arg != NULL; arg = arg->next, i++) {
char buf[1025];
switch (arg->type) {
case MT_ARG_SLIDER:
snprintf(buf, 1024, "%s=%d", arg->name, arg->data.slider.value);
snprintf(buf, sizeof(buf)-1, "%s=%d",
arg->name, arg->data.slider.value);
break;
case MT_ARG_RING:
snprintf(buf, 1024, "%s=%s", arg->name, arg->data.ring.strings[arg->data.ring.value]);
snprintf(buf, sizeof(buf)-1, "%s=%s", arg->name,
arg->data.ring.strings[arg->data.ring.value]);
break;
case MT_ARG_NUMERIC:
snprintf(buf, 1024, "%s=%d", arg->name, arg->data.numeric.value);
snprintf(buf, sizeof(buf)-1, "%s=%d",
arg->name, arg->data.numeric.value);
break;
case MT_ARG_ALPHA:
snprintf(buf, 1024, "%s=%s", arg->name, arg->data.alpha.value);
snprintf(buf, sizeof(buf)-1, "%s=%s",
arg->name, arg->data.alpha.value);
break;
case MT_ARG_IP:
snprintf(buf, 1024, "%s=%s", arg->name, arg->data.ip.value);
snprintf(buf, sizeof(buf)-1, "%s=%s",
arg->name, arg->data.ip.value);
break;
case MT_ARG_CHECKBOX:
snprintf(buf, 1024, "%s=%d", arg->name, arg->data.checkbox.value);
if (arg->data.checkbox.map[arg->data.checkbox.value] != NULL)
strncpy(buf, arg->data.checkbox.map[arg->data.checkbox.value],
sizeof(buf)-1);
else
snprintf(buf, sizeof(buf)-1, "%s=%d",
arg->name, arg->data.checkbox.value);
break;
default:
/* error ? */
break;
}
buf[1024] ='\0';
buf[sizeof(buf)-1] ='\0';
envp[i] = strdup(buf);
debug(RPT_DEBUG, "Environment: %s", envp[i]);
}
envp[cmd->numChildren] = NULL;
#endif
debug(RPT_DEBUG, "Executing '%s' via Shell %s", command, default_shell);
switch (pid = fork()) {
case 0:
/* We're the child: execute the command */
#if defined(LCDEXEC_PARAMS)
execve(argv[0], (char **) argv, envp);
#else
execv(argv[0], (char **) argv);
#endif
exit(0);
break;
default:
@@ -550,11 +555,9 @@ static int exec_command(MenuEntry *cmd)
return -1;
}
#if defined(LCDEXEC_PARAMS)
/* free envp's contents */
for (i = 0; envp[i] != NULL; i++)
free(envp[i]);
#endif
return 0;
}
clients/lcdexec/lcdexec.conf
+64 -63
View File
@@ -59,76 +59,77 @@ Exec="echo P"
[CmdQ]
DisplayName="Show environment"
Exec="env"
# When lcdexec is compiled with compiler option -DLCDEXEC_PARAMS
# you can change parameters for commands within lcdexec.
# Now you can change parameters for commands within lcdexec.
# Parameters are handed to the program as environment variables;
# so they can be easily used in the Exec=... line as $XXX
# (e.g. "echo $SLIDER_ARG").
# Please note: command with parameters get an action entry
# added to the parameter menu automatically.
# Activating this entry will execute the program.
# This is IMHO not ideal, but the best idea I could come up with
# Please note: commands with parameters get an action entry
# added to end of the parameter menu automatically.
# Activating this action named "Apply!" will execute the program.
# This is IMHO not ideal, but the best idea I could come up with.
# I'm open for ideas to improve it.
# Here's how they are defined:
#Parameter=SLIDER_ARG
#Parameter=RING_ARG
#Parameter=NUMERIC_ARG
#Parameter=ALPHA_ARG
#Parameter=CHECKBOX_ARG
#Parameter=IP_ARG
#
#[SLIDER_ARG]
#DisplayName="Slider"
## Type of argument widget [legal: Slider, Checkbox, Ring, Numeric, Alpha, IP]
#Type=Slider
## inital value of the argument
#Value=5
## options depending on the widget type
#MinValue=0
#MaxValue=10
#
#[CHECKBOX_ARG]
#DisplayName="Checkbox"
#Type=Checkbox
#Value=on
#AllowGray=no
#
#[RING_ARG]
#DisplayName="Ring"
#Type=Ring
#Value=0
## list of alternative strings
#String=Eins
#String=Zwei
#String=Drei
#
#[NUMERIC_ARG]
#DisplayName="Numeric"
#Type=Numeric
#Value=5
#MinValue=0
#MaxValue=10
#
#[ALPHA_ARG]
#DisplayName="Alpha"
#Type=Alpha
## range of characters allowed [default: "ABCDEFGHIJKLMNOPQRSTUVWXYZ"]
#AllowedChars = "+-0123456789ABCDEF"
#Value=5
#MinLength=0
#MaxLength=10
#
#[IP_ARG]
#DisplayName="IP"
#Type=IP
#Value=10.230.2.2
#v6=no
# Here's how paramters get defined:
Parameter=SLIDER_ARG
Parameter=RING_ARG
Parameter=NUMERIC_ARG
Parameter=ALPHA_ARG
Parameter=CHECKBOX_ARG
Parameter=IP_ARG
[SLIDER_ARG]
DisplayName="Slider"
# Type of argument widget [legal: Slider, Checkbox, Ring, Numeric, Alpha, IP]
Type=Slider
# inital value of the argument
Value=5
# options depending on the widget type
MinValue=0
MaxValue=10
[CHECKBOX_ARG]
DisplayName="Checkbox"
Type=Checkbox
Value=on
AllowGray=yes
# replacement texts for the possible values
OffText="off"
OnText="on"
GrayText="gray"
[RING_ARG]
DisplayName="Ring"
Type=Ring
Value=0
# list of alternative strings to choose from
String=Eins
String=Zwei
String=Drei
[NUMERIC_ARG]
DisplayName="Numeric"
Type=Numeric
Value=5
MinValue=0
MaxValue=10
[ALPHA_ARG]
DisplayName="Alpha"
Type=Alpha
# range of characters allowed [default: "ABCDEFGHIJKLMNOPQRSTUVWXYZ"]
AllowedChars = "+-0123456789ABCDEF"
Value=5
MinLength=0
MaxLength=10
[IP_ARG]
DisplayName="IP"
Type=IP
Value=10.230.2.2
v6=no
# Ideas for further extensions:
# Ideas for further extensions (patches welcome):
# - shell selectable in command sections
# - type definitions instead implicit depending on Exec/Entry
# (the latter only as fallback)
# - display configurable result of a command on the display
# - jump to other menus depending on the output/result of a command
clients/lcdexec/menu.c
+41 -41
View File
@@ -1,12 +1,14 @@
/*
* menu.c
* This file is part of lcdexec, an LCDproc client.
/** \file clients/lcdexec/menu.c
* Menu parsing and building functions for the \c lcdexec client
*/
/* This file is part of lcdexec, an LCDproc client.
*
* This file is released under the GNU General Public License. Refer to the
* COPYING file distributed with this package.
*
* Copyright (c) 2002, Joris Robijn
* Copyright (c) 2006, Peter Marschall
* Copyright (c) 2006-7, Peter Marschall
*/
#include <stdio.h>
@@ -20,11 +22,10 @@
#include "menu.h"
/* names for boolean and tristate values */
static char *boolValueName[] = { "false", "true" };
#if defined(LCDEXEC_PARAMS)
static char *triGrayValueName[] = { "off", "on", "gray" };
#endif
/* recursively read the menu hierarchy */
@@ -79,10 +80,9 @@ MenuEntry *menu_read(MenuEntry *parent, const char *name)
}
}
else if (config_get_string(name, "Exec", 0, NULL) != NULL) {
#if defined(LCDEXEC_PARAMS)
MenuEntry **addr = &me->children;
const char *entryname;
#endif
// it's a command to execute
me->type = MT_EXEC;
@@ -93,7 +93,6 @@ MenuEntry *menu_read(MenuEntry *parent, const char *name)
}
me->data.exec.feedback = config_get_bool(name, "Feedback", 0, 0);
#if defined(LCDEXEC_PARAMS)
// try to read parameters
while ((entryname = config_get_string(name, "Parameter", me->numChildren, NULL)) != NULL) {
MenuEntry *entry = menu_read(me, entryname);
@@ -112,9 +111,7 @@ MenuEntry *menu_read(MenuEntry *parent, const char *name)
// automagically add an "Apply ?" action
if ((me->numChildren > 0) && (addr != NULL))
*addr = menu_read(me, NULL);
#endif
}
#if defined(LCDEXEC_PARAMS)
else if (config_get_string(name, "Type", 0, NULL) != NULL) {
// it's a command parameter
const char *type;
@@ -168,7 +165,8 @@ MenuEntry *menu_read(MenuEntry *parent, const char *name)
me->data.alpha.value = strdup(config_get_string(name, "Value", 0, ""));
me->data.alpha.minlen = config_get_int(name, "MinLength", 0, 0);
me->data.alpha.maxlen = config_get_int(name, "MaxLength", 0, 100);
me->data.alpha.allowed_chars = strdup(config_get_string(name, "AllowedChars", 0, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"));
me->data.alpha.allowed = strdup(config_get_string(name, "AllowedChars", 0,
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"));
}
else if (strcasecmp(type, "ip") == 0) {
me->type = MT_ARG_IP;
@@ -177,12 +175,21 @@ MenuEntry *menu_read(MenuEntry *parent, const char *name)
me->data.ip.v6 = config_get_bool(name, "Value", 0, 0);
}
else if (strcasecmp(type, "checkbox") == 0) {
const char *tmp;
me->type = MT_ARG_CHECKBOX;
me->data.checkbox.allow_gray = config_get_bool(name, "AllowGray", 0, 0);
me->data.checkbox.value = (me->data.checkbox.allow_gray)
? config_get_tristate(name, "Value", 0, "gray", 0)
: config_get_bool(name, "Value", 0, 0);
// get replacement strings for different values
tmp = config_get_string(name, "OffText", 0, NULL);
me->data.checkbox.map[0] = (tmp != NULL) ? strdup(tmp) : NULL;
tmp = config_get_string(name, "OnText", 0, NULL);
me->data.checkbox.map[1] = (tmp != NULL) ? strdup(tmp) : NULL;
tmp = config_get_string(name, "GrayText", 0, NULL);
me->data.checkbox.map[2] = (tmp != NULL) ? strdup(tmp) : NULL;
}
else {
report(RPT_DEBUG, "illegal parameter type");
@@ -190,7 +197,6 @@ MenuEntry *menu_read(MenuEntry *parent, const char *name)
return NULL;
}
}
#endif
else {
report(RPT_DEBUG, "unknown menu entry type");
//menu_free(me);
@@ -267,7 +273,6 @@ int menu_sock_send(MenuEntry *me, MenuEntry *parent, int sock)
}
break;
case MT_EXEC:
#if defined(LCDEXEC_PARAMS)
if (me->children == NULL) {
if (sock_printf(sock, "menu_add_item \"%s\" \"%d\" action \"%s\"\n",
parent_id, me->id, me->displayname) < 0)
@@ -290,17 +295,7 @@ int menu_sock_send(MenuEntry *me, MenuEntry *parent, int sock)
return -1;
}
}
#else
if (sock_printf(sock, "menu_add_item \"%s\" \"%d\" action \"%s\"\n",
parent_id, me->id, me->displayname) < 0)
return -1;
if (sock_printf(sock, "menu_set_item \"%s\" \"%d\" -menu_result quit\n",
parent_id, me->id) < 0)
return -1;
#endif
break;
#if defined(LCDEXEC_PARAMS)
case MT_ARG_SLIDER:
if (sock_printf(sock, "menu_add_item \"%s\" \"%d\" slider -text \"%s\""
" -value %d -minvalue %d -maxvalue %d"
@@ -372,7 +367,7 @@ int menu_sock_send(MenuEntry *me, MenuEntry *parent, int sock)
me->data.alpha.value,
me->data.alpha.minlen,
me->data.alpha.maxlen,
me->data.alpha.allowed_chars) <0)
me->data.alpha.allowed) <0)
return -1;
if (me->next == NULL) {
@@ -418,7 +413,6 @@ int menu_sock_send(MenuEntry *me, MenuEntry *parent, int sock)
parent_id, me->id) < 0)
return -1;
break;
#endif
default:
return -1;
}
@@ -464,9 +458,10 @@ const char *menu_command(MenuEntry *me)
void menu_free(MenuEntry *me)
{
if (me != NULL) {
switch (me->type) {
MenuEntry *entry;
MenuEntry *entry;
int i;
switch (me->type) {
case MT_EXEC:
if (me->data.exec.command != NULL)
free(me->data.exec.command);
@@ -482,7 +477,6 @@ void menu_free(MenuEntry *me)
}
me->children = NULL;
break;
#if defined(LCDEXEC_PARAMS)
case MT_ARG_SLIDER:
if (me->data.slider.mintext != NULL)
free(me->data.slider.mintext);
@@ -506,16 +500,22 @@ void menu_free(MenuEntry *me)
if (me->data.alpha.value != NULL)
free(me->data.alpha.value);
me->data.alpha.value = NULL;
if (me->data.alpha.allowed_chars != NULL)
free(me->data.alpha.allowed_chars);
me->data.alpha.allowed_chars = NULL;
if (me->data.alpha.allowed != NULL)
free(me->data.alpha.allowed);
me->data.alpha.allowed = NULL;
break;
case MT_ARG_IP:
if (me->data.ip.value != NULL)
free(me->data.ip.value);
me->data.ip.value = NULL;
break;
#endif
case MT_ARG_CHECKBOX:
for (i = 0; i < sizeof(me->data.checkbox.map)/sizeof(me->data.checkbox.map[0]); i++) {
if (me->data.checkbox.map[i] != NULL) {
free(me->data.checkbox.map[i]);
me->data.checkbox.map[i] = NULL;
}
}
default:
break;
}
@@ -562,11 +562,10 @@ void menu_dump(MenuEntry *me)
for (entry = me->children; entry != NULL; entry = entry->next)
menu_dump(entry);
break;
case MT_EXEC:
report(RPT_DEBUG, "Exec=\"%s\"", me->data.exec.command);
report(RPT_DEBUG, "Feedback=%s", boolValueName[me->data.exec.feedback]);
#if defined(LCDEXEC_PARAMS)
// dump entry's parameter referencess
for (entry = me->children; entry != NULL; entry = entry->next)
report(RPT_DEBUG, "Parameter=%s", entry->name);
@@ -575,11 +574,7 @@ void menu_dump(MenuEntry *me)
// dump entry's parameters
for (entry = me->children; entry != NULL; entry = entry->next)
menu_dump(entry);
#else
report(RPT_DEBUG, "");
#endif
break;
#if defined(LCDEXEC_PARAMS)
case MT_ARG_SLIDER:
report(RPT_DEBUG, "Type=slider");
report(RPT_DEBUG, "Value=%d", me->data.slider.value);
@@ -611,7 +606,7 @@ void menu_dump(MenuEntry *me)
case MT_ARG_ALPHA:
report(RPT_DEBUG, "Type:=lpha");
report(RPT_DEBUG, "Value=\"%s\"", me->data.alpha.value);
report(RPT_DEBUG, "AllowedChars=\"%s\"", me->data.alpha.allowed_chars);
report(RPT_DEBUG, "AllowedChars=\"%s\"", me->data.alpha.allowed);
report(RPT_DEBUG, "");
break;
case MT_ARG_IP:
@@ -624,9 +619,14 @@ void menu_dump(MenuEntry *me)
report(RPT_DEBUG, "Type=ip");
report(RPT_DEBUG, "Value=%s", triGrayValueName[me->data.checkbox.value]);
report(RPT_DEBUG, "AllowGray=%s", boolValueName[me->data.checkbox.allow_gray]);
if (me->data.checkbox.map[0] != NULL)
report(RPT_DEBUG, "OffText=%s", me->data.checkbox.map[0]);
if (me->data.checkbox.map[1] != NULL)
report(RPT_DEBUG, "OnText=%s", me->data.checkbox.map[1]);
if (me->data.checkbox.map[2] != NULL)
report(RPT_DEBUG, "GrayText=%s", me->data.checkbox.map[2]);
report(RPT_DEBUG, "");
break;
#endif
default:
report(RPT_DEBUG, "ERROR: unknown menu entry type");
break;
clients/lcdexec/menu.h
+42 -42
View File
@@ -8,13 +8,13 @@
* COPYING file distributed with this package.
*
* Copyright (c) 2002, Joris Robijn
* Copyright (c) 2006, Peter Marschall
*
* Copyright (c) 2006-7, Peter Marschall
*/
#ifndef LCDEXEC_MENU_H
#define LCDEXEC_MENU_H
/* boolean values */
#ifndef TRUE
# define TRUE 1
#endif
@@ -22,6 +22,7 @@
# define FALSE 0
#endif
/** Symbolic names for the types of a MenuEntry */
typedef enum {
MT_UNKNOWN = 0x00, /**< Unknown MenuEntry type. */
@@ -29,7 +30,7 @@ typedef enum {
MT_EXEC = 0x20, /**< MenuEntry representing an executable command. */
MT_ARGUMENT = 0x40, /**< Mask denoting a parameter of any type */
MT_AUTOMATIC = 0x80, /**< BitFlag denoting automatically generated entries */
#if defined(LCDEXEC_PARAMS)
MT_ARG_SLIDER = 0x41, /**< MenuEntry representing a slider parameter. */
MT_ARG_RING = 0x42, /**< MenuEntry representing a ring parameter. */
MT_ARG_NUMERIC = 0x43, /**< MenuEntry representing a numeric input parameter. */
@@ -37,60 +38,59 @@ typedef enum {
MT_ARG_IP = 0x45, /**< MenuEntry representing a IP input parameter. */
MT_ARG_CHECKBOX = 0x46, /**< MenuEntry representing a checkbox input parameter. */
MT_ARG_ACTION = 0x47, /**< MenuEntry representing a checkbox input parameter. */
#endif
} MenuType;
/** Data structure to hold a menu entry in \c lcdexec */
typedef struct menu_entry {
// Variables necessary for multiple/all types
char *name; /**< Name of the menu entry (from section name). */
char *displayname; /**< isible name of the entry. */
char *displayname; /**< Visible name of the entry. */
int id; /**< Internal ID of the entry. */
MenuType type; /**< Type of the entry. */
struct menu_entry *parent; /**< Parent menu entry */
int numChildren; /**< # of child entries */
struct menu_entry *parent; /**< Parent menu entry. */
int numChildren; /**< # of child entries. */
struct menu_entry *children; /**< Subordinate menu entries (for type \c MT_MENU & \c MT_EXEC). */
struct menu_entry *next; /**< Next sibling menu entry (for type \c MT_MENU). */
// variables necessary for multiple types
struct menu_entry *children; /**< Subordinate menu entries (for MenuType \c MT_MENU & \c MT_EXEC). */
struct menu_entry *next; /**< Next sibling menu entry (for MenuType \c MT_MENU). */
union {
struct { // elements necessary for type MT_EXEC
char *command; /**< Command to execute (for MenuType \c exec). */
int feedback; /**< Feedback option (for MenuType \c exec). */
// Variables specific to one special type
union data {
struct exec{ // elements necessary for type MT_EXEC
char *command; /**< Command to execute. */
int feedback; /**< Feedback flag. */
} exec;
#if defined(LCDEXEC_PARAMS)
struct { // elements necessary for type MT_ARG_SLIDER
int value;
int minval;
int maxval;
int stepsize;
char *mintext;
char *maxtext;
struct slider { // elements necessary for type MT_ARG_SLIDER
int value; /**< Numeric value of slider. */
int minval; /**< Minimal allowed value. */
int maxval; /**< Maximal allowed value. */
int stepsize; /**< Increments/decrement for value. */
char *mintext; /**< Label for the min. value. */
char *maxtext; /**< Label for the max. value. */
} slider;
struct { // elements necessary for type MT_ARG_RING
int value;
char **strings;
struct ring { // elements necessary for type MT_ARG_RING
int value; /**< Index into list of alternatives. */
char **strings; /**< List of alternatives. */
} ring;
struct { // elements necessary for type MT_ARG_NUMERIC
int value;
int minval;
int maxval;
struct numeric { // elements necessary for type MT_ARG_NUMERIC
int value; /**< Numeric input value. */
int minval; /**< Minimal allowed value. */
int maxval; /**< Maximal allowed value. */
} numeric;
struct { // elements necessary for type MT_ARG_ALPHA
char *value;
int minlen;
int maxlen;
char *allowed_chars;
struct alpha { // elements necessary for type MT_ARG_ALPHA
char *value; /**< Text value. */
int minlen; /**< Maximal allowed length. */
int maxlen; /**< Minimal required length. */
char *allowed; /**< Characters allowed in input. */
} alpha;
struct { // elements necessary for type MT_ARG_IP
char *value;
int v6;
struct ip { // elements necessary for type MT_ARG_IP
char *value; /**< IP address value. */
int v6; /**< Flag: use IPv6 editing logic. */
} ip;
struct { // elements necessary for type MT_ARG_CHECKBOX
int value;
int allow_gray;
struct checkbox { // elements necessary for type MT_ARG_CHECKBOX
int value; /**< Checkbox value. */
int allow_gray; /**< Flag for tristate chechboxes. */
char *map[3]; /**< Replacement strings for each value. */
} checkbox;
#endif
} data;
} MenuEntry;