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<!DOCTYPE html>
<html>
<head>
<title>Multi-Entry Widgets for Date and Time</title>
<meta name="Author" content="Csaba Nemethi">
<meta name="Keywords" content="mentry, widget, date, time, clock">
<link rel="stylesheet" type="text/css" href="stylesheet.css">
</head>
<body>
<div>
<h1>Multi-Entry Widgets for Date and Time</h1>
<h2>For Mentry Version 4.3</h2>
<h3>by</h3>
<h2>Csaba Nemethi</h2>
<address>
<a href="mailto:csaba.nemethi@t-online.de">csaba.nemethi@t-online.de</a>
</address>
</div>
<hr>
<h2 id="contents">Contents</h2>
<ul>
<li><a href="#dateMentry">The <code><b>mentry::dateMentry</b></code>
Command</a></li>
<li><a href="#timeMentry">The <code><b>mentry::timeMentry</b></code>
Command</a></li>
<li><a href="#dateTimeMentry">The
<code><b>mentry::dateTimeMentry</b></code> Command</a></li>
<li><a href="#putClockVal">The <code><b>mentry::putClockVal</b></code>
Command</a></li>
<li><a href="#getClockVal">The <code><b>mentry::getClockVal</b></code>
Command</a></li>
</ul>
<div>
<p><a href="index.html">Start page</a></p>
</div>
<hr>
<h2 id="dateMentry">The <code><b>mentry::dateMentry</b></code> Command</h2>
<dl>
<dt><b>NAME</b></dt>
<dd><code>mentry::dateMentry</code> – Create and manipulate mentry
widgets for date</dd>
<dt class="tm"><b>SYNOPSIS</b></dt>
<dd>
<pre>
<b>mentry::dateMentry</b> <i>pathName format separator</i> ?<i>options</i>?
</pre>
</dd>
<dt><b>DESCRIPTION</b></dt>
<dd>This command creates a new mentry widget <code><i>pathName</i></code>
for displaying and editing a date according to the
<code><i>format</i></code> argument, which must be a string of length 3,
consisting of the letters <code><b>"d"</b></code> for the day
(<code>01</code> - <code>31</code>), <code><b>"m"</b></code> for the month
(<code>01</code> - <code>12</code>), and <code><b>"y"</b></code> or
<code><b>"Y"</b></code> for the year without century (<code>00</code> -
<code>99</code>) or with century (e.g., <code>2008</code>), in an arbitrary
order. These field descriptor characters have the same meanings as in
the <code><b>clock format</b></code> command. The
<code><i>separator</i></code> argument specifies the text to be displayed
in the labels separating the three entry components of the mentry widget
(the most common values are the <code><b>"/"</b></code>,
<code><b>"-"</b></code>, and <code><b>"."</b></code> characters). The
supported <code><i>options</i></code> are the same as in the case of the
<code><b><a href="mentryWidget.html">mentry::mentry</a></b></code>
command.</dd>
<dd class="tm">The command sets the <code><b>type</b></code> attribute of
the widget to the value <code>"Date"</code>, saves the value of
<code><i>format</i></code> in its <code><b>format</b></code> attribute, and
returns the name of the newly created widget.</dd>
<dt class="tm"><b>DEFAULT BINDINGS</b></dt>
<dd>The <code><b>mentry::dateMentry</b></code> command defines four new
keyboard bindings for the entry components of the mentry widget it
creates: The <code>Up</code> key increments the entry's value by 1 if
the latter is less than the allowed maximum for that component.
Similarly, the <code>Down</code> key decrements the entry's value by 1 if
the latter is greater than the allowed minimum for that component.
The <code>Prior</code> key increments the entry's value by at most 10 if
the latter is less than the allowed maximum for that component.
Similarly, the <code>Next</code> key decrements the entry's value by at
most 10 if the latter is greater than the allowed minimum for that
component. If the entry is empty then all of these keys insert the
component-specific minimum value into the entry.</dd>
<dd class="tm">The actions performed by the <code>Up</code> and
<code>Down</code> keys can also be triggered with the aid of the mouse
wheel or a two-finger gesture on the touchpad. In addition, on Mac OS
X/11+ Aqua, the actions performed by the <code>Prior</code> and
<code>Next</code> keys are also triggered by the
<code><b><Option-MouseWheel></b></code> event. The same holds
true on all windowing systems if the Tk version is 8.7a4 or later, where
the <code><b>Option</b></code> modifier is bound to the <code>Option</code>
key on Mac OS X/11+ and to the <code>Alt</code> key on Windows and
X11.</dd>
<dt class="tm"><b>KEYWORDS</b></dt>
<dd>mentry, widget, date</dd>
</dl>
<div>
<p><a href="#contents">Contents</a> <a href=
"index.html">Start page</a></p>
</div>
<hr>
<h2 id="timeMentry">The <code><b>mentry::timeMentry</b></code> Command</h2>
<dl>
<dt><b>NAME</b></dt>
<dd><code>mentry::timeMentry</code> – Create and manipulate mentry
widgets for time</dd>
<dt class="tm"><b>SYNOPSIS</b></dt>
<dd>
<pre>
<b>mentry::timeMentry</b> <i>pathName format separator</i> ?<i>options</i>?
</pre>
</dd>
<dt><b>DESCRIPTION</b></dt>
<dd>This command creates a new mentry widget <code><i>pathName</i></code>
for displaying and editing a time according to the
<code><i>format</i></code> argument, which must be a string of length 2 or
3, consisting of the following field descriptor characters of the
<code><b>clock format</b></code> command: <code><b>"H"</b></code> or
<code><b>"I"</b></code>, followed by <code><b>"M"</b></code>, and
optionally the letter <code><b>"S"</b></code>. An
<code><b>"H"</b></code> as first character specifies the time format
<code><b>"%H:%M"</b></code> or <code><b>"%H:%M:%S"</b></code> (i.e., with
the hour between <code>0</code> and <code>23</code>), while the letter
<code><b>"I"</b></code> stands for <code><b>"%I:%M
%p"</b></code> or <code><b>"%I:%M:%S %p"</b></code>
(i.e., with AM/PM indicator). The <code><i>separator</i></code>
argument specifies the text to be displayed in the labels separating the
entry components of the mentry widget (this is usually the
<code><b>":"</b></code> character). The <code><i>options</i></code>
are the same as in the case of the <code><b><a href=
"mentryWidget.html">mentry::mentry</a></b></code> command.</dd>
<dd class="tm">The command sets the <code><b>type</b></code> attribute of
the widget to the value <code>"Time"</code>, saves the value of
<code><i>format</i></code> in its <code><b>format</b></code> attribute, and
returns the name of the newly created widget.</dd>
<dt class="tm"><b>DEFAULT BINDINGS</b></dt>
<dd>The <code><b>mentry::timeMentry</b></code> command defines four new
keyboard bindings for the entry components of the mentry widget it
creates: The <code>Up</code> key increments the entry's value by 1 if
the latter is less than the allowed maximum for that component.
Similarly, the <code>Down</code> key decrements the entry's value by 1 if
the latter is greater than the allowed minimum for that component.
The <code>Prior</code> key increments the entry's value by at most 10 if
the latter is less than the allowed maximum for that component.
Similarly, the <code>Next</code> key decrements the entry's value by at
most 10 if the latter is greater than the allowed minimum for that
component. If the entry is empty then all of these keys insert the
component-specific minimum value into the entry.</dd>
<dd class="tm">The actions performed by the <code>Up</code> and
<code>Down</code> keys can also be triggered with the aid of the mouse
wheel or a two-finger gesture on the touchpad. In addition, on Mac OS
X/11+ Aqua, the actions performed by the <code>Prior</code> and
<code>Next</code> keys are also triggered by the
<code><b><Option-MouseWheel></b></code> event. The same holds
true on all windowing systems if the Tk version is 8.7a4 or later, where
the <code><b>Option</b></code> modifier is bound to the <code>Option</code>
key on Mac OS X/11+ and to the <code>Alt</code> key on Windows and
X11.</dd>
<dt class="tm"><b>KEYWORDS</b></dt>
<dd>mentry, widget, time</dd>
</dl>
<div>
<p><a href="#contents">Contents</a> <a href=
"index.html">Start page</a></p>
</div>
<hr>
<h2 id="dateTimeMentry">The <code><b>mentry::dateTimeMentry</b></code>
Command</h2>
<dl>
<dt><b>NAME</b></dt>
<dd><code>mentry::dateTimeMentry</code> – Create and manipulate
mentry widgets for date & time</dd>
<dt class="tm"><b>SYNOPSIS</b></dt>
<dd>
<pre>
<b>mentry::dateTimeMentry</b> <i>pathName format dateSeparator timeSeparator</i> ?<i>options</i>?
</pre>
</dd>
<dt><b>DESCRIPTION</b></dt>
<dd>This command creates a new mentry widget <code><i>pathName</i></code>
for displaying and editing a date & time according to the
<code><i>format</i></code> argument, which must be a string of length 5 or
6, with the first 3 characters consisting of the letters
<code><b>"d"</b></code> for the day (<code>01</code> - <code>31</code>),
<code><b>"m"</b></code> for the month (<code>01</code> - <code>12</code>),
and <code><b>"y"</b></code> or <code><b>"Y"</b></code> for the year without
century (<code>00</code> - <code>99</code>) or with century (e.g.,
<code>2008</code>), in an arbitrary order, followed by 2 or 3 further field
descriptor characters of the <code><b>clock format</b></code>
command, which must be: <code><b>"H"</b></code> or <code><b>"I"</b></code>,
then <code><b>"M"</b></code>, and optionally the letter
<code><b>"S"</b></code>. An <code><b>"H"</b></code> specifies the
time format <code><b>"%H:%M"</b></code> or <code><b>"%H:%M:%S"</b></code>
(i.e., with the hour between <code>0</code> and <code>23</code>), while the
letter <code><b>"I"</b></code> stands for <code><b>"%I:%M
%p"</b></code> or <code><b>"%I:%M:%S %p"</b></code>
(i.e., with AM/PM indicator). The <code><i>dateSeparator</i></code>
argument specifies the text to be displayed in the labels separating the
entry components in the date part of the mentry widget (the most common
values are the <code><b>"/"</b></code>, <code><b>"-"</b></code>, and
<code><b>"."</b></code> characters). Similarly, the
<code><i>timeSeparator</i></code> argument stands for the text to be
displayed in the labels separating the entry components in the time part of
mentry widget (this is usually the <code><b>":"</b></code>
character). The date and time parts in turn are separated from each
other by a space character. The supported <code><i>options</i></code>
are the same as in the case of the <code><b><a href=
"mentryWidget.html">mentry::mentry</a></b></code> command.</dd>
<dd class="tm">The command sets the <code><b>type</b></code> attribute of
the widget to the value <code>"DateTime"</code>, saves the value of
<code><i>format</i></code> in its <code><b>format</b></code> attribute, and
returns the name of the newly created widget.</dd>
<dt class="tm"><b>DEFAULT BINDINGS</b></dt>
<dd>The <code><b>mentry::dateTimeMentry</b></code> command defines four new
keyboard bindings for the entry components of the mentry widget it
creates: The <code>Up</code> key increments the entry's value by 1 if
the latter is less than the allowed maximum for that component.
Similarly, the <code>Down</code> key decrements the entry's value by 1 if
the latter is greater than the allowed minimum for that component.
The <code>Prior</code> key increments the entry's value by at most 10 if
the latter is less than the allowed maximum for that component.
Similarly, the <code>Next</code> key decrements the entry's value by at
most 10 if the latter is greater than the allowed minimum for that
component. If the entry is empty then all of these keys insert the
component-specific minimum value into the entry.</dd>
<dd class="tm">The actions performed by the <code>Up</code> and
<code>Down</code> keys can also be triggered with the aid of the mouse
wheel or a two-finger gesture on the touchpad. In addition, on Mac OS
X/11+ Aqua, the actions performed by the <code>Prior</code> and
<code>Next</code> keys are also triggered by the
<code><b><Option-MouseWheel></b></code> event. The same holds
true on all windowing systems if the Tk version is 8.7a4 or later, where
the <code><b>Option</b></code> modifier is bound to the <code>Option</code>
key on Mac OS X/11+ and to the <code>Alt</code> key on Windows and
X11.</dd>
<dt class="tm"><b>KEYWORDS</b></dt>
<dd>mentry, widget, date, time</dd>
</dl>
<div>
<p><a href="#contents">Contents</a> <a href=
"index.html">Start page</a></p>
</div>
<hr>
<h2 id="putClockVal">The <code><b>mentry::putClockVal</b></code> Command</h2>
<dl>
<dt><b>NAME</b></dt>
<dd><code>mentry::putClockVal</code> – Output a clock value to a
date, time, or date & time mentry</dd>
<dt class="tm"><b>SYNOPSIS</b></dt>
<dd>
<pre>
<b>mentry::putClockVal</b> <i>clockValue</i> <i>pathName</i> ?<b>-gmt</b> <i>boolean</i>?
</pre>
</dd>
<dt><b>DESCRIPTION</b></dt>
<dd>This command outputs the date, time, or date & time corresponding to
the integer <code><i>clockValue</i></code> to the mentry widget
<code><i>pathName</i></code>, which must have been created with the
<code><b><a href="#dateMentry">mentry::dateMentry</a></b></code>,
<code><b><a href="#timeMentry">mentry::timeMentry</a></b></code>, or
<code><b><a href="#dateTimeMentry">mentry::dateTimeMentry</a></b></code>
command (this is checked by examining the widget's <code><b>type</b></code>
attribute, which must have the value <code>"Date"</code>,
<code>"Time"</code>, or <code>"DateTime"</code>).</dd>
<dd class="tm">Like in the case of the <code><b>clock
format</b></code> command, the optional argument pair
<code><b>-gmt</b> <i>boolean</i></code> specifies whether the clock value
is to be formatted as Greenwich Mean Time or according to the local
timezone as defined by the operating environment.</dd>
<dt class="tm"><b>KEYWORDS</b></dt>
<dd>mentry, widget, date, time, clock</dd>
</dl>
<div>
<p><a href="#contents">Contents</a> <a href=
"index.html">Start page</a></p>
</div>
<hr>
<h2 id="getClockVal">The <code><b>mentry::getClockVal</b></code> Command</h2>
<dl>
<dt><b>NAME</b></dt>
<dd><code>mentry::getClockVal</code> – Get the clock value from a
date, time, or date & time mentry</dd>
<dt class="tm"><b>SYNOPSIS</b></dt>
<dd>
<pre>
<b>mentry::getClockVal</b> <i>pathName</i> ?<b>-base</b> <i>clockValue</i>? ?<b>-gmt</b> <i>boolean</i>?
</pre>
</dd>
<dt><b>DESCRIPTION</b></dt>
<dd>This command returns the clock value corresponding to the date, time,
or date & time contained in the mentry widget <code><i>pathName</i></code>,
which must have been created with the <code><b><a href=
"#dateMentry">mentry::dateMentry</a></b></code>, <code><b><a href=
"#timeMentry">mentry::timeMentry</a></b></code>, or <code><b><a href=
"#dateTimeMentry">mentry::dateTimeMentry</a></b></code> command (this is
checked by examining the widget's <code><b>type</b></code> attribute, which
must have the value <code>"Date"</code>, <code>"Time"</code>, or
<code>"DateTime"</code>).</dd>
<dd class="tm">Like in the case of the <code><b>clock
scan</b></code> command, the optional argument pair
<code><b>-base</b> <i>clockValue</i></code> specifies that the date
contained in <code><i>clockValue</i></code> is to be used when getting the
clock value from the given mentry widget, and the optional argument
pair <code><b>-gmt</b> <i>boolean</i></code> specifies whether the
clock value is to be calculated relative to Greenwich Mean Time or
according to the local timezone as defined by the operating
environment.</dd>
<dd class="tm">If an error occurs during the conversion, the command sets
the focus to the first erronous entry component, generates an error, and
returns one of the values contained in the following table:</dd>
<dd class="tm">
<table border="2" cellspacing="0" cellpadding="3">
<tr bgcolor="#FFFFE0">
<th align="left" nowrap>Return Value</th>
<th align="left">Meaning</th>
</tr>
<tr>
<td><code>"EMPTY"</code></td>
<td>Any entry component (except the one containing the seconds) is
empty.</td>
</tr>
<tr>
<td><code>"BAD"</code></td>
<td>The value of the day, month, or hour (the latter only if the
AM/PM indicator is present) is <code>0</code>.</td>
</tr>
<tr>
<td><code>"BAD_DATE"</code></td>
<td>The <year, month, day> triple is invalid (note that the
command is aware of leap years).</td>
</tr>
<tr>
<td><code>"BAD_YEAR"</code></td>
<td>The above triple is valid, but the conversion (made with the aid
of the <code><b>clock scan</b></code> command) failed
because of an unsupported year value (e.g., between <code>38</code>
and <code>70</code>).</td>
</tr>
</table>
</dd>
<dt class="tm"><b>KEYWORDS</b></dt>
<dd>mentry, widget, date, time, clock</dd>
</dl>
<div>
<p><a href="#contents">Contents</a> <a href=
"index.html">Start page</a></p>
</div>
</body>
</html>
|
