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<TITLE>iwidgets2.2.0 User Commands - scrolledlistbox</TITLE>
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<H1>iwidgets2.2.0 User Commands - scrolledlistbox</H1>
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<PRE>
</PRE>
<H2><HR ALIGN=LEFT WIDTH=70% SIZE=3></H2><PRE>
</PRE>
<H2>NAME</H2><PRE>
scrolledlistbox - Create and manipulate scrolled listbox
widgets
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>scrolledlistbox</STRONG> <EM>pathName</EM> ?<EM>options</EM>?
</PRE>
<H2>INHERITANCE</H2><PRE>
itk::Widget <- Labeledwidget <- Scrolledlistbox
</PRE>
<H2>STANDARD OPTIONS</H2><PRE>
<STRONG>activeBackground</STRONG> <STRONG>background</STRONG> <STRONG>borderWidthcursor</STRONG>
<STRONG>exportSelection</STRONG> <STRONG>foreground</STRONG> <STRONG>highlightColor</STRONG> <STRONG>highlightThickness</STRONG>
<STRONG>relief</STRONG> <STRONG>repeatDelay</STRONG> <STRONG>repeatInterval</STRONG> <STRONG>selectBackground</STRONG>
<STRONG>selectBorderWidth</STRONG> <STRONG>selectForeground</STRONG>
See the "options" manual entry for details on the standard
options.
</PRE>
<H2>ASSOCIATED OPTIONS</H2><PRE>
<STRONG>selectMode</STRONG>
See the "listbox" widget manual entry for details on the
above associated options.
<STRONG>activeRelief</STRONG> <STRONG>elementBorderwidth</STRONG> <STRONG>jumptroughColor</STRONG>
See the "scrollbar" widget manual entry for details on the
above associated options.
</PRE>
<H2>INHERITED OPTIONS</H2><PRE>
<STRONG>labeledBitmap</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>dblClickCommand</STRONG>
Class: <STRONG>Command</STRONG>
Command-Line Switch: <STRONG>-dblclickcommand</STRONG>
Specifies a Tcl command procedure which is called when
an item is double clicked. Typically this occurs when
mouse button 1 is double clicked over an item. Selec-
tion policy does not matter.
Name: <STRONG>height</STRONG>
Class: <STRONG>Height</STRONG>
Command-Line Switch: <STRONG>-height</STRONG>
Specifies the height of the scrolled list box as an
entire unit. The value may be specified in any of the
forms acceptable to <STRONG>Tk_GetPixels</STRONG>. Any additional space
needed to display the other components such as labels,
margins, and scrollbars force the listbox to be
compressed. A value of zero along with the same value
for the width causes the value given for the visi-
bleitems option to be applied which administers
geometry constraints in a different manner. The
default height is zero.
Name: <STRONG>hscrollMode</STRONG>
Class: <STRONG>ScrollMode</STRONG>
Command-Line Switch: <STRONG>-hscrollmode</STRONG>
Specifies the the display mode to be used for the hor-
izontal scrollbar: <STRONG>static,</STRONG> <STRONG>dynamic,</STRONG> or <STRONG>none</STRONG>. In static
mode, the scroll bar is displayed at all times.
Dynamic mode displays the scroll bar as required, and
none disables the scroll bar display. The default is
static.
Name: <STRONG>items</STRONG>
Class: <STRONG>Items</STRONG>
Command-Line Switch: <STRONG>-items</STRONG>
Specifies the contents of the listbox as a proper list
of elements.
Name: <STRONG>sbWidth</STRONG>
Class: <STRONG>Width</STRONG>
Command-Line Switch: <STRONG>-sbwidth</STRONG>
Specifies the width of the scrollbar in any of the
forms acceptable to <STRONG>Tk_GetPixels</STRONG>. The default width is
15 pixels..
Name: <STRONG>scrollMargin</STRONG>
Class: <STRONG>Margin</STRONG>
Command-Line Switch: <STRONG>-scrollmargin</STRONG>
Specifies the distance between the listbox and
scrollbar in any of the forms acceptable to
<STRONG>Tk_GetPixels</STRONG>. The default is 3 pixels.
Name: <STRONG>selectionCommand</STRONG>
Class: <STRONG>Command</STRONG>
Command-Line Switch: <STRONG>-selectioncommand</STRONG>
Specifies a Tcl command procedure which is called when
an item is selected. Selection policy does not matter.
Name: <STRONG>textBackground</STRONG>
Class: <STRONG>Background</STRONG>
Command-Line Switch <STRONG>-textbackground</STRONG>
Specifies the background color for the listbox. This
allows the background within the listbox to be dif-
ferent from the normal background color.
Name: <STRONG>textFont</STRONG>
Class: <STRONG>Font</STRONG>
Command-Line Switch: <STRONG>-textfont</STRONG>
Specifies the font to be used for text in the listbox.
This allows for the font associated with text internal
to the scrolled listbox to be different than the font
for labels.
Name: <STRONG>visibleitems</STRONG>
Class: <STRONG>VisibleItems</STRONG>
Command-Line Switch: <STRONG>-visibleitems</STRONG>
Specifies the widthxheight in characters and lines for
the listbox. This option is only administered if the
width and height options are both set to zero, other-
wise they take precedence. The default value is 20x10.
With the visibleitems option engaged, geometry con-
straints are maintained only on the listbox. The size
of the other components such as labels, margins, and
scroll bars, are additive and independent, effecting
the overall size of the scrolled list box. In con-
trast, should the width and height options have non
zero values, they are applied to the scrolled list box
as a whole. The listbox is compressed or expanded to
maintain the geometry constraints.
Name: <STRONG>vscrollMode</STRONG>
Class: <STRONG>ScrollMode</STRONG>
Command-Line Switch: <STRONG>-vscrollmode</STRONG>
Specifies the the display mode to be used for the vert-
ical scrollbar: <STRONG>static,</STRONG> <STRONG>dynamic,</STRONG> or <STRONG>none</STRONG>. In static
mode, the scroll bar is displayed at all times.
Dynamic mode displays the scroll bar as required, and
none disables the scroll bar display. The default is
static.
Name: <STRONG>width</STRONG>
Class: <STRONG>Width</STRONG>
Command-Line Switch: <STRONG>-width</STRONG>
Specifies the width of the scrolled list box as an
entire unit. The value may be specified in any of the
forms acceptable to <STRONG>Tk_GetPixels</STRONG>. Any additional space
needed to display the other components such as labels,
margins, and scrollbars force the listbox to be
compressed. A value of zero along with the same value
for the height causes the value given for the visi-
bleitems option to be applied which administers
geometry constraints in a different manner. The
default width is zero.
</PRE>
<H2><HR ALIGN=LEFT WIDTH=70% SIZE=3></H2><PRE>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <STRONG>scrolledlistbox</STRONG> command creates a scrolled listbox with
additional options to manage horizontal and vertical
scrollbars. This includes options to control which
scrollbars are displayed and the method, i.e. statically or
dynamically.
</PRE>
<H2>METHODS</H2><PRE>
The <STRONG>scrolledlistbox</STRONG> command creates a new Tcl command whose
name is <EM>pathName</EM>. This command may be used to invoke vari-
ous 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.
Many of the widget commands for a scrolledlistbox take as
one argument an indicator of which entry of the list box to
operate on. These indicators are called <EM>index</EM>es and may be
specified in any of the following forms:
<EM>number</EM> Specifies the element as a numerical index,
where 0 corresponds to the first element in the
listbox.
<STRONG>active</STRONG> Indicates the element that has the location cur-
sor. This element will be displayed with an
underline when the listbox has the keyboard
focus, and it is specified with the <STRONG>activate</STRONG>
widget command.
<STRONG>anchor</STRONG> Indicates the anchor point for the selection,
which is set with the <STRONG>selection</STRONG> <STRONG>anchor</STRONG> widget
command.
<STRONG>end</STRONG> Indicates the end of the listbox. For some com-
mands this means just after the last element;
for other commands it means the last element.
<STRONG>@</STRONG><EM>x</EM><STRONG>,</STRONG><EM>y</EM> Indicates the element that covers the point in
the listbox window specified by <EM>x</EM> and <EM>y</EM> (in
pixel coordinates). If no element covers that
point, then the closest element to that point is
used.
<EM>pattern</EM> If the index doesn't satisfy one of the above
forms then this form is used. <EM>Pattern</EM> is
pattern-matched against the items in the list
box, in order from the top down, until a match-
ing entry is found. The rules of
<STRONG>Tcl_StringMatch</STRONG> are used.
The following widget commands are possible for scrolledlist-
box widgets:
</PRE>
<H2>ASSOCIATED METHODS</H2><PRE>
<STRONG>activate</STRONG> <STRONG>bbox</STRONG> <STRONG>curselection</STRONG> <STRONG>delete</STRONG>
<STRONG>get</STRONG> <STRONG>index</STRONG> <STRONG>insert</STRONG> <STRONG>nearest</STRONG>
<STRONG>scan</STRONG> <STRONG>see</STRONG> <STRONG>selection</STRONG> <STRONG>size</STRONG>
<STRONG>xview</STRONG> <STRONG>yview</STRONG>
See the "listbox" 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>scrolledlistbox</STRONG> command.
<EM>pathName</EM> <STRONG>clear</STRONG>
Clears the listbox of all items.
<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>scrolledlistbox</STRONG> command.
<EM>pathName</EM> <STRONG>getcurselection</STRONG>
Returns the contents of the listbox element indicated
by the current selection indexes. Short cut version of
get and curselection command combination.
<EM>pathName</EM> <STRONG>justify</STRONG> <EM>direction</EM>
Justifies the list contents via teh scroll bars in one
of four directions: <STRONG>left</STRONG>, <STRONG>right</STRONG>, <STRONG>top</STRONG>, or <STRONG>bottom</STRONG>.
<EM>pathName</EM> <STRONG>selecteditemcount</STRONG>
Returns the number of items currently selected in the
list.
<EM>pathName</EM> <STRONG>sort</STRONG> <EM>order</EM>
Sort the current list in either <STRONG>ascending</STRONG> or <STRONG>descending</STRONG>
order. The values <STRONG>increasing</STRONG> and <STRONG>decreasing</STRONG> are also
accepted.
</PRE>
<H2>COMPONENTS</H2><PRE>
Name: <STRONG>listbox</STRONG>
Class: <STRONG>listbox</STRONG>
The listbox component is the listbox widget. See the
"listbox" widget manual entry for details on the list-
box component item.
Name: <STRONG>horizsb</STRONG>
Class: <STRONG>Scrollbar</STRONG>
The horizsb component is the horizontal scroll bar.
See the "scrollbar" widget manual entry for details on
the horizsb component item.
Name: <STRONG>vertsb</STRONG>
Class: <STRONG>Scrollbar</STRONG>
The vertsb component is the vertical scroll bar. See
the "scrollbar" widget manual entry for details on the
vertsb component item.
</PRE>
<H2>EXAMPLE</H2><PRE>
wm minsize . 0 0
option add *textBackground white
proc selCmd {} {
puts stdout "[.slb getcurselection]"
}
proc defCmd {} {
puts stdout "Double Click"
return [selCmd]
}
scrolledlistbox .slb -selection single \
-items {Hello {Out There} World} \
-vscrollmode static -hscrollmode dynamic -labeltext "List" \
-selectioncommand selCmd -dblclickcommand defCmd
pack .slb -padx 10 -pady 10 -fill both -expand yes
</PRE>
<H2>AUTHOR</H2><PRE>
Mark L. Ulferts
</PRE>
<H2>KEYWORDS</H2><PRE>
scrolledlistbox, listbox, widget
</PRE>
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