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[/] [or1k/] [trunk/] [insight/] [itcl/] [iwidgets3.0.0/] [demos/] [html/] [entryfield.n.html] - Rev 1780
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<TITLE>iwidgets2.2.0 User Commands - entryfield</TITLE>
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<H1>iwidgets2.2.0 User Commands - entryfield</H1>
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<PRE>
</PRE>
<H2><HR ALIGN=LEFT WIDTH=70% SIZE=3></H2><PRE>
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<H2>NAME</H2><PRE>
entryfield - Create and manipulate a entry field widget
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>entryfield</STRONG> <EM>pathName</EM> ?<EM>options</EM>?
</PRE>
<H2>INHERITANCE</H2><PRE>
itk::Widget <- LabeledWidget <- entryfield
</PRE>
<H2>STANDARD OPTIONS</H2><PRE>
<STRONG>background</STRONG> <STRONG>borderWidth</STRONG> <STRONG>cursor</STRONG> <STRONG>exportSelection</STRONG>
<STRONG>foreground</STRONG> <STRONG>highlightColor</STRONG> <STRONG>highlightThicknessinsertBackground</STRONG>
<STRONG>insertBorderWidth</STRONG> <STRONG>insertOffTime</STRONG> <STRONG>insertOnTimeinsertWidth</STRONG>
<STRONG>justify</STRONG> <STRONG>relief</STRONG> <STRONG>selectBackgroundselectBorderWidth</STRONG>
<STRONG>selectForeground</STRONG> <STRONG>textVariable</STRONG> <STRONG>width</STRONG>
See the "options" manual entry for details on the standard
options.
</PRE>
<H2>ASSOCIATED OPTIONS</H2><PRE>
<STRONG>show</STRONG> <STRONG>state</STRONG>
See the "entry" manual entry for details on the associated
options.
</PRE>
<H2>INHERITED OPTIONS</H2><PRE>
<STRONG>labelBitmap</STRONG> <STRONG>labelFont</STRONG> <STRONG>labelImage</STRONG> <STRONG>labelMargin</STRONG>
<STRONG>labelPos</STRONG> <STRONG>labelText</STRONG> <STRONG>labelVariable</STRONG>
See the "labeledwidget" class manual entry for details on
the inherited options.
</PRE>
<H2>WIDGET-SPECIFIC OPTIONS</H2><PRE>
Name: <STRONG>childSitePos</STRONG>
Class: <STRONG>Position</STRONG>
Command-Line Switch: <STRONG>-childsitepos</STRONG>
Specifies the position of the child site in the entry
field: <STRONG>n</STRONG>, <STRONG>s</STRONG>, <STRONG>e</STRONG>, or <STRONG>w</STRONG>. The default is e.
Name: <STRONG>command</STRONG>
Class: <STRONG>Command</STRONG>
Command-Line Switch: <STRONG>-command</STRONG>
Specifies a Tcl command to be executed upon detection
of a Return key press event.
Name: <STRONG>fixed</STRONG>
Class: <STRONG>Fixed</STRONG>
Command-Line Switch: <STRONG>-fixed</STRONG>
Restrict entry to the specified number of chars. A
value of 0, which is the default, denotes no limit.
The value is the maximum number of chars the user may
type into the field, regardles of field width. For
example, if the field width is set to 20 and the fixed
value is 10, the user will only be able to type 10
characters into the field which is 20 characters long.
Name: <STRONG>focusCommand</STRONG>
Class: <STRONG>Command</STRONG>
Command-Line Switch: <STRONG>-focuscommand</STRONG>
Specifies a Tcl command to be executed upon reception
of focus.
Name: <STRONG>invalid</STRONG>
Class: <STRONG>Command</STRONG>
Command-Line Switch: <STRONG>-invalid</STRONG>
Specifies a Tcl command to be executed upon determina-
tion of invalid input. The default is bell.
Name: <STRONG>textBackground</STRONG>
Class: <STRONG>Background</STRONG>
Command-Line Switch: <STRONG>-textbackground</STRONG>
Background color for inside textual portion of the
entry field. The value may be given in any of the
forms acceptable to <STRONG>Tk_GetColor</STRONG>.
Name: <STRONG>textFont</STRONG>
Class: <STRONG>Font</STRONG>
Command-Line Switch: <STRONG>-textfont</STRONG>
Name of font to use for display of text in entryfield.
The value may be given in any of the forms acceptable
to <STRONG>Tk_GetFont</STRONG>.
Name: <STRONG>validate</STRONG>
Class: <STRONG>Command</STRONG>
Command-Line Switch: <STRONG>-validate</STRONG>
The validate option allows specification of a valida-
tion mechanism. Standard character validation such as
<STRONG>numeric</STRONG>, <STRONG>alphabetic</STRONG>, <STRONG>integer</STRONG>, <STRONG>hexidecimal</STRONG>, <STRONG>real</STRONG>, and
<STRONG>alphanumeric</STRONG> can be handled through the use of key-
words. Should more extensive validation be necessary,
the value may contain the name of a command script.
The script should return a boolean value. True for
valid, false for invalid. If false is returned, then
the procedure associated with the invalid option will
be invoked. If the validation script contains any <STRONG>%</STRONG>
characters, then the script will not be executed
directly. Instead, a new script will be generated by
replacing each <STRONG>%</STRONG>, and the character following it, with
information from the entryfield. The replacement
depends on the character following the <STRONG>%</STRONG>, as defined in
the list below.
<STRONG>%c</STRONG> Replaced with the current input character.
<STRONG>%P</STRONG> Replaced with the contents of the entryfield modified
to include the latest keystoke. This is equivalent to
peeking at the future contents, enabling rejection
prior to the update.
<STRONG>%S</STRONG> Replaced with the current contents of the entryfield
prior to the latest keystroke being added.
<STRONG>%W</STRONG> Replaced with the entryfield widget pathname.
</PRE>
<H2><HR ALIGN=LEFT WIDTH=70% SIZE=3></H2><PRE>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <STRONG>entryfield</STRONG> command creates an enhanced text entry widget
with an optional associated label. Addtional options sup-
port validation and establishing a upper limit on the number
of characters which may be entered in the field.
</PRE>
<H2>METHODS</H2><PRE>
The <STRONG>entryfield</STRONG> command creates a new Tcl command whose name
is <EM>pathName</EM>. This command may be used to invoke various
operations on the widget. It has the following general
form:
<EM>pathName</EM> <EM>option</EM> ?<EM>arg</EM> <EM>arg</EM> ...?
<EM>Option</EM> and the <EM>arg</EM>s determine the exact behavior of the com-
mand. The following commands are possible for entryfield
widgets:
</PRE>
<H2>ASSOCIATED METHODS</H2><PRE>
<STRONG>delete</STRONG> <STRONG>get</STRONG> <STRONG>icursor</STRONG> <STRONG>index</STRONG>
<STRONG>insert</STRONG> <STRONG>scan</STRONG> <STRONG>selection</STRONG> <STRONG>xview</STRONG>
See the "entry" manual entry for details on the associated
methods.
</PRE>
<H2>WIDGET-SPECIFIC METHODS</H2><PRE>
<EM>pathName</EM> <STRONG>cget</STRONG> <EM>option</EM>
Returns the current value of the configuration option
given by <EM>option</EM>. <EM>Option</EM> may have any of the values
accepted by the <STRONG>entryfield</STRONG> command.
<EM>pathName</EM> <STRONG>childsite</STRONG>
Returns the path name of the child site.
<EM>pathName</EM> <STRONG>clear</STRONG>
Clear entry widget
<EM>pathName</EM> <STRONG>configure</STRONG> ?<EM>option</EM>? ?<EM>value</EM> <EM>option</EM> <EM>value</EM> ...?
Query or modify the configuration options of the
widget. If no <EM>option</EM> is specified, returns a list
describing all of the available options for <EM>pathName</EM>
(see <STRONG>Tk_ConfigureInfo</STRONG> for information on the format of
this list). If <EM>option</EM> is specified with no <EM>value</EM>, then
the command returns a list describing the one named
option (this list will be identical to the correspond-
ing sublist of the value returned if no <EM>option</EM> is
specified). If one or more <EM>option</EM> - <EM>value</EM> pairs are
specified, then the command modifies the given widget
option(s) to have the given value(s); in this case the
command returns an empty string. <EM>Option</EM> may have any
of the values accepted by the <STRONG>entryfield</STRONG> command.
</PRE>
<H2>COMPONENTS</H2><PRE>
Name: <STRONG>efchildsite</STRONG>
Class: <STRONG>frame</STRONG>
The efchildsite component is the user child site for
the entry field. See the "frame" widget manual entry
for details on the efchildsite component item.
Name: <STRONG>entry</STRONG>
Class: <STRONG>entry</STRONG>
The entry component provides the entry field for user
text input and display. See the "entry" widget manual
entry for details on the entry component item.
</PRE>
<H2>EXAMPLE</H2><PRE>
option add *textBackground white
proc returnCmd {} {
puts stdout "Return Pressed"
}
proc invalidCmd {} {
puts stdout "Alphabetic contents invalid"
}
entryfield .ef -command returnCmd
entryfield .fef -labeltext "Fixed:" -fixed 10 -width 12
entryfield .nef -labeltext "Numeric:" -validate numeric -width 12
entryfield .aef -labeltext "Alphabetic:" \
-validate alphabetic -width 12 -invalid invalidCmd
entryfield .pef -labeltext "Password:" \
-show 267 -width 12 -command returnCmd
LabeledWidget::alignLabels .ef .fef .nef .aef .pef
pack .ef -fill x -expand yes -padx 10 -pady 5
pack .fef -fill x -expand yes -padx 10 -pady 5
pack .nef -fill x -expand yes -padx 10 -pady 5
pack .aef -fill x -expand yes -padx 10 -pady 5
pack .pef -fill x -expand yes -padx 10 -pady 5
</PRE>
<H2>AUTHOR</H2><PRE>
Sue Yockey
Mark L. Ulferts
</PRE>
<H2>KEYWORDS</H2><PRE>
entryfield, widget
</PRE>
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