556 lines
19 KiB
Plaintext
556 lines
19 KiB
Plaintext
'\"
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'\" Copyright (c) 2004 Joe English
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'\"
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'\" See the file "license.terms" for information on usage and redistribution
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'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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'\"
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.TH ttk::treeview n 8.5 Tk "Tk Themed Widget"
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.so man.macros
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.BS
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.SH NAME
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ttk::treeview \- hierarchical multicolumn data display widget
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.SH SYNOPSIS
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\fBttk::treeview \fIpathname \fR?\fIoptions\fR?
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.BE
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.SH DESCRIPTION
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.PP
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The \fBttk::treeview\fR widget displays a hierarchical collection of items.
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Each item has a textual label, an optional image,
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and an optional list of data values.
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The data values are displayed in successive columns after
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the tree label.
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.PP
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The order in which data values are displayed may be controlled
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by setting the \fB\-displaycolumns\fR widget option.
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The tree widget can also display column headings.
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Columns may be accessed by number or by symbolic names
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listed in the \fB\-columns\fR widget option;
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see \fBCOLUMN IDENTIFIERS\fR.
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.PP
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Each item is identified by a unique name.
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The widget will generate item IDs if they are not supplied by the caller.
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There is a distinguished root item, named \fB{}\fR.
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The root item itself is not displayed;
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its children appear at the top level of the hierarchy.
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.PP
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Each item also has a list of \fItags\fR,
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which can be used to associate event bindings with individual items
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and control the appearance of the item.
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.\" .PP
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.\" @@@HERE: describe selection, focus item
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.PP
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Treeview widgets support horizontal and vertical scrolling with the
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standard \fB\-\fR[\fBxy\fR]\fBscrollcommand\fR options
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and [\fBxy\fR]\fBview\fR widget commands.
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.SO ttk_widget
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\-class \-cursor \-takefocus
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\-style \-xscrollcommand \-yscrollcommand
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\-padding
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.SE
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.SH "WIDGET-SPECIFIC OPTIONS"
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.OP \-columns columns Columns
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A list of column identifiers,
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specifying the number of columns and their names.
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.\"X: This is a read-only option; it may only be set when the widget is created.
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.OP \-displaycolumns displayColumns DisplayColumns
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A list of column identifiers
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(either symbolic names or integer indices)
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specifying which data columns are displayed
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and the order in which they appear,
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or the string \fB#all\fP.
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If set to \fB#all\fP (the default),
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all columns are shown in the order given.
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.OP \-height height Height
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Specifies the number of rows which should be visible.
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Note:
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the requested width is determined from the sum of the column widths.
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.OP \-selectmode selectMode SelectMode
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Controls how the built-in class bindings manage the selection.
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One of \fBextended\fR, \fBbrowse\fR, or \fBnone\fR.
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.RS
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.PP
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If set to \fBextended\fR (the default), multiple items may be selected.
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If \fBbrowse\fR, only a single item will be selected at a time.
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If \fBnone\fR, the selection will not be changed.
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.PP
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Note that application code and tag bindings can set the selection
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however they wish, regardless of the value of \fB\-selectmode\fR.
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.RE
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.OP \-show show Show
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A list containing zero or more of the following values, specifying
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which elements of the tree to display.
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.RS
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.IP \fBtree\fR
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Display tree labels in column #0.
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.IP \fBheadings\fR
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Display the heading row.
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.PP
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The default is \fBtree headings\fR, i.e., show all elements.
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.PP
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\fBNOTE:\fR Column #0 always refers to the tree column,
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even if \fB\-show tree\fR is not specified.
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.RE
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.SH "WIDGET COMMAND"
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.PP
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.TP
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\fIpathname \fBbbox \fIitem\fR ?\fIcolumn\fR?
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Returns the bounding box (relative to the treeview widget's window)
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of the specified \fIitem\fR
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in the form \fIx y width height\fR.
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If \fIcolumn\fR is specified, returns the bounding box of that cell.
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If the \fIitem\fR is not visible
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(i.e., if it is a descendant of a closed item or is scrolled offscreen),
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returns the empty list.
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.TP
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\fIpathname \fBcget \fIoption\fR
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Returns the current value of the specified \fIoption\fR; see \fIttk::widget(n)\fR.
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.TP
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\fIpathname \fBchildren \fIitem\fR ?\fInewchildren\fR?
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If \fInewchildren\fR is not specified,
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returns the list of children belonging to \fIitem\fR.
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.RS
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.PP
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If \fInewchildren\fR is specified, replaces \fIitem\fR's child list
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with \fInewchildren\fR.
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Items in the old child list not present in the new child list
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are detached from the tree.
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None of the items in \fInewchildren\fR may be an ancestor
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of \fIitem\fR.
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.RE
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.TP
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\fIpathname \fBcolumn \fIcolumn\fR ?\fI\-option \fR?\fIvalue \-option value...\fR?
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Query or modify the options for the specified \fIcolumn\fR.
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If no \fI\-option\fR is specified,
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returns a dictionary of option/value pairs.
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If a single \fI\-option\fR is specified,
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returns the value of that option.
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Otherwise, the options are updated with the specified values.
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The following options may be set on each column:
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.RS
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.TP
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\fB\-id \fIname\fR
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The column name. This is a read-only option.
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For example, [\fI$pathname \fBcolumn #\fIn \fB\-id\fR]
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returns the data column associated with display column #\fIn\fR.
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.TP
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\fB\-anchor \fIanchor\fR
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Specifies how the text in this column should be aligned
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with respect to the cell. \fIAnchor\fR is one of
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\fBn\fR, \fBne\fR, \fBe\fR, \fBse\fR,
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\fBs\fR, \fBsw\fR, \fBw\fR, \fBnw\fR, or \fBcenter\fR.
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.TP
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\fB\-minwidth \fIminwidth\fR
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The minimum width of the column in pixels.
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The treeview widget will not make the column any smaller than
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\fB\-minwidth\fR when the widget is resized or the user drags a
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column separator. Default is 20 pixels.
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.TP
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\fB\-stretch \fIboolean\fR
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Specifies whether or not the column width should be adjusted
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when the widget is resized or the user drags a column separator.
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\fIBoolean\fR may have any of the forms accepted by \fBTcl_GetBoolean\fR.
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By default columns are stretchable.
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.TP
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\fB\-width \fIwidth\fR
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The width of the column in pixels. Default is 200 pixels. The specified
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column width may be changed by Tk in order to honor \fB\-stretch\fR
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and/or \fB\-minwidth\fR, or when the widget is resized or the user drags a
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column separator.
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.PP
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Use \fIpathname column #0\fR to configure the tree column.
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.RE
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.TP
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\fIpathname \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
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Modify or query widget options; see \fIttk::widget(n)\fR.
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.TP
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\fIpathname \fBdelete \fIitemList\fR
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Deletes each of the items in \fIitemList\fR and all of their descendants.
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The root item may not be deleted.
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See also: \fBdetach\fR.
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.TP
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\fIpathname \fBdetach \fIitemList\fR
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Unlinks all of the specified items in \fIitemList\fR from the tree.
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The items and all of their descendants are still present
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and may be reinserted at another point in the tree
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with the \fBmove\fR operation,
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but will not be displayed until that is done.
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The root item may not be detached.
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See also: \fBdelete\fR.
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.TP
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\fIpathname \fBexists \fIitem\fR
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Returns 1 if the specified \fIitem\fR is present in the tree,
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0 otherwise.
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.TP
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\fIpathname \fBfocus \fR?\fIitem\fR?
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If \fIitem\fR is specified, sets the focus item to \fIitem\fR.
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Otherwise, returns the current focus item, or \fB{}\fR if there is none.
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.\" Need: way to clear the focus item. {} works for this...
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.TP
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\fIpathname \fBheading \fIcolumn\fR ?\fI\-option \fR?\fIvalue \-option value...\fR?
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Query or modify the heading options for the specified \fIcolumn\fR.
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Valid options are:
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.RS
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.TP
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\fB\-text \fItext\fR
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The text to display in the column heading.
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.TP
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\fB\-image \fIimageName\fR
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Specifies an image to display to the right of the column heading.
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.TP
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\fB\-anchor \fIanchor\fR
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Specifies how the heading text should be aligned.
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One of the standard Tk anchor values.
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.TP
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\fB\-command \fIscript\fR
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A script to evaluate when the heading label is pressed.
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.PP
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Use \fIpathname heading #0\fR to configure the tree column heading.
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.RE
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.TP
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\fIpathname \fBidentify \fIcomponent x y\fR
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Returns a description of the specified \fIcomponent\fR
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under the point given by \fIx\fR and \fIy\fR,
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or the empty string if no such \fIcomponent\fR is present at that position.
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The following subcommands are supported:
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.RS
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.TP
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\fIpathname \fBidentify region \fIx y\fR
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.RS
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Returns one of:
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.IP heading
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Tree heading area;
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use [\fBpathname identify column \fIx y\fR]
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to determine the heading number.
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.IP separator
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Space between two column headings;
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[\fBpathname identify column \fIx y\fR]
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will return the display column identifier
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of the heading to left of the separator.
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.IP tree
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The tree area.
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.IP cell
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A data cell.
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.RE
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\fIpathname \fBidentify item \fIx y\fR
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Returns the item ID of the item at position \fIy\fR.
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.TP
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\fIpathname \fBidentify column \fIx y\fR
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Returns the display column identifier of the cell at position \fIx\fR.
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The tree column has ID \fB#0\fR.
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.TP
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\fIpathname \fBidentify element \fIx y\fR
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The element at position \fIx,y\fR.
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.TP
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\fIpathname \fBidentify row \fIx y\fR
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Obsolescent synonym for \fIpathname \fBidentify item\fR.
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.PP
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See \fBCOLUMN IDENTIFIERS\fR for a discussion of display columns
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and data columns.
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.RE
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.TP
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\fIpathname \fBindex \fIitem\fR
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Returns the integer index of \fIitem\fR within its parent's list of children.
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.TP
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\fIpathname \fBinsert \fIparent index\fR ?\fB\-id \fIid\fR? \fIoptions...\fR
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Creates a new item.
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\fIparent\fR is the item ID of the parent item,
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or the empty string \fB{}\fR
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to create a new top-level item.
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\fIindex\fR is an integer, or the value \fBend\fR, specifying where in the
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list of \fIparent\fR's children to insert the new item.
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If \fIindex\fR is less than or equal to zero,
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the new node is inserted at the beginning;
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if \fIindex\fR is greater than or equal to the current number of children,
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it is inserted at the end.
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If \fB\-id\fR is specified, it is used as the item identifier;
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\fIid\fR must not already exist in the tree.
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Otherwise, a new unique identifier is generated.
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.RS
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.PP
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\fIpathname \fBinsert\fR returns the item identifier of the
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newly created item.
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See \fBITEM OPTIONS\fR for the list of available options.
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.RE
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.TP
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\fIpathname \fBinstate \fIstatespec\fR ?\fIscript\fR?
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Test the widget state; see \fIttk::widget(n)\fR.
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.TP
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\fIpathname \fBitem \fIitem\fR ?\fI\-option \fR?\fIvalue \-option value...\fR?
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Query or modify the options for the specified \fIitem\fR.
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If no \fI\-option\fR is specified,
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returns a dictionary of option/value pairs.
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If a single \fI\-option\fR is specified,
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returns the value of that option.
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Otherwise, the item's options are updated with the specified values.
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See \fBITEM OPTIONS\fR for the list of available options.
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.TP
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\fIpathname \fBmove \fIitem parent index\fR
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Moves \fIitem\fR to position \fIindex\fR in \fIparent\fR's list of children.
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It is illegal to move an item under one of its descendants.
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.RS
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.PP
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If \fIindex\fR is less than or equal to zero, \fIitem\fR is moved
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to the beginning; if greater than or equal to the number of children,
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it is moved to the end.
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.RE
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.TP
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\fIpathname \fBnext \fIitem\fR
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Returns the identifier of \fIitem\fR's next sibling,
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or \fB{}\fR if \fIitem\fR is the last child of its parent.
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.TP
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\fIpathname \fBparent \fIitem\fR
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Returns the ID of the parent of \fIitem\fR,
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or \fB{}\fR if \fIitem\fR is at the top level of the hierarchy.
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.TP
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\fIpathname \fBprev \fIitem\fR
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Returns the identifier of \fIitem\fR's previous sibling,
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or \fB{}\fR if \fIitem\fR is the first child of its parent.
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.TP
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\fIpathname \fBsee \fIitem\fR
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Ensure that \fIitem\fR is visible:
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sets all of \fIitem\fR's ancestors to \fB\-open true\fR,
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and scrolls the widget if necessary so that \fIitem\fR is
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within the visible portion of the tree.
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.TP
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\fIpathname \fBselection\fR ?\fIselop itemList\fR?
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If \fIselop\fR is not specified, returns the list of selected items.
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Otherwise, \fIselop\fR is one of the following:
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.RS
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.TP
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\fIpathname \fBselection set \fIitemList\fR
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\fIitemList\fR becomes the new selection.
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.TP
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\fIpathname \fBselection add \fIitemList\fR
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Add \fIitemList\fR to the selection
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.TP
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\fIpathname \fBselection remove \fIitemList\fR
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Remove \fIitemList\fR from the selection
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.TP
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\fIpathname \fBselection toggle \fIitemList\fR
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Toggle the selection state of each item in \fIitemList\fR.
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.RE
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.TP
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\fIpathname \fBset \fIitem\fR ?\fIcolumn\fR? ?\fIvalue\fR?
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With one argument, returns a dictionary of column/value pairs
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for the specified \fIitem\fR.
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With two arguments, returns the current value of the specified \fIcolumn\fR.
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With three arguments, sets the value of column \fIcolumn\fR
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in item \fIitem\fR to the specified \fIvalue\fR.
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See also \fBCOLUMN IDENTIFIERS\fR.
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.TP
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\fIpathname \fBstate\fR ?\fIstateSpec\fR?
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Modify or query the widget state; see \fIttk::widget(n)\fR.
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.TP
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\fIpathName \fBtag \fIargs...\fR
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.RS
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.TP
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\fIpathName \fBtag bind \fItagName \fR?\fIsequence\fR? ?\fIscript\fR?
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Add a Tk binding script for the event sequence \fIsequence\fR
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to the tag \fItagName\fR. When an X event is delivered to an item,
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binding scripts for each of the item's \fB\-tags\fR are evaluated
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in order as per \fIbindtags(n)\fR.
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.RS
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.PP
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\fB<KeyPress>\fR, \fB<KeyRelease>\fR, and virtual events
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are sent to the focus item.
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\fB<ButtonPress>\fR, \fB<ButtonRelease>\fR, and \fB<Motion>\fR events
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are sent to the item under the mouse pointer.
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No other event types are supported.
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.PP
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The binding \fIscript\fR undergoes \fB%\fR-substitutions before
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evaluation; see \fBbind(n)\fR for details.
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.RE
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.TP
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\fIpathName \fBtag configure \fItagName\fR ?\fIoption\fR? ?\fIvalue option value...\fR?
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Query or modify the options for the specified \fItagName\fR.
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If one or more \fIoption/value\fR pairs are specified,
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sets the value of those options for the specified tag.
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If a single \fIoption\fR is specified,
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returns the value of that option
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(or the empty string if the option has not been specified for \fItagName\fR).
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With no additional arguments,
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returns a dictionary of the option settings for \fItagName\fR.
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See \fBTAG OPTIONS\fR for the list of available options.
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.TP
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\fIpathName \fBtag has \fItagName\fR ?\fIitem\fR?
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If \fIitem\fR is specified, returns 1 or 0
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depending on whether the specified item has the named tag.
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Otherwise, returns a list of all items which have
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the specified tag.
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.TP
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\fIpathName \fBtag names\fR
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Returns a list of all tags used by the widget.
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.TP
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\fIpathName \fBtag add \fItag items\fR
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Adds the specified \fItag\fR to each of the listed \fIitems\fR.
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If \fItag\fR is already present for a particular item,
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then the \fB\-tags\fR for that item are unchanged.
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.TP
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\fIpathName \fBtag remove \fItag\fR ?\fIitems\fR?
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Removes the specified \fItag\fR from each of the listed \fIitems\fR.
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If \fIitems\fR is omitted, removes \fItag\fR from each item in the tree.
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If \fItag\fR is not present for a particular item,
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then the \fB\-tags\fR for that item are unchanged.
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.RE
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.PP
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The treeview widget also supports the following generic \fBttk::widget\fR
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widget subcommands (see \fIttk::widget(n)\fR for details):
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.DS
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.ta 5.5c 11c
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\fBxview\fR \fByview\fR
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.DE
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.SH "ITEM OPTIONS"
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.PP
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The following item options may be specified for items
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in the \fBinsert\fR and \fBitem\fR widget commands.
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.OP \-text text Text
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The textual label to display for the item.
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.OP \-image image Image
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A Tk image, displayed to the left of the label.
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.OP \-values values Values
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The list of values associated with the item.
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.RS
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.PP
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Each item should have the same number of values as
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the \fB\-columns\fR widget option.
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If there are fewer values than columns,
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the remaining values are assumed empty.
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If there are more values than columns,
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the extra values are ignored.
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.RE
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.OP \-open open Open
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A boolean value indicating whether the item's children
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should be displayed (\fB\-open true\fR) or hidden (\fB\-open false\fR).
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.OP \-tags tags Tags
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A list of tags associated with this item.
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.SH "TAG OPTIONS"
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.PP
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The following options may be specified on tags:
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.IP \fB\-foreground\fR
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Specifies the text foreground color.
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.IP \fB\-background\fR
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Specifies the cell or item background color.
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.IP \fB\-font\fR
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Specifies the font to use when drawing text.
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.\" ??? Maybe: .IP \-anchor
|
|
.\" ??? Maybe: .IP \-padding
|
|
.\" ??? Maybe: .IP \-text
|
|
.IP \fB\-image\fR
|
|
Specifies the item image, in case the item's \fB\-image\fR option is empty.
|
|
.\" .PP
|
|
.\" \fI(@@@ TODO: sort out order of precedence for options)\fR
|
|
.PP
|
|
Tag priority is decided by the creation order: tags created first receive
|
|
higher priority.
|
|
.SH "COLUMN IDENTIFIERS"
|
|
.PP
|
|
Column identifiers take any of the following forms:
|
|
.IP \(bu
|
|
A symbolic name from the list of \fB\-columns\fR.
|
|
.IP \(bu
|
|
An integer \fIn\fR, specifying the \fIn\fRth data column.
|
|
.IP \(bu
|
|
A string of the form \fB#\fIn\fR, where \fIn\fR is an integer,
|
|
specifying the \fIn\fRth display column.
|
|
.PP
|
|
\fBNOTE:\fR
|
|
Item \fB\-values\fR may be displayed in a different order than
|
|
the order in which they are stored.
|
|
.PP
|
|
\fBNOTE:\fR Column #0 always refers to the tree column,
|
|
even if \fB\-show tree\fR is not specified.
|
|
.PP
|
|
A \fIdata column number\fR is an index into an item's \fB\-values\fR list;
|
|
a \fIdisplay column number\fR is the column number in the tree
|
|
where the values are displayed.
|
|
Tree labels are displayed in column #0.
|
|
If \fB\-displaycolumns\fR is not set,
|
|
then data column \fIn\fR is displayed in display column \fB#\fIn+1\fR.
|
|
Again, \fBcolumn #0 always refers to the tree column\fR.
|
|
.SH "VIRTUAL EVENTS"
|
|
.PP
|
|
The treeview widget generates the following virtual events.
|
|
.IP <<TreeviewSelect>>
|
|
Generated whenever the selection changes.
|
|
.IP <<TreeviewOpen>>
|
|
Generated just before setting the focus item to \fB\-open true\fR.
|
|
.IP <<TreeviewClose>>
|
|
Generated just after setting the focus item to \fB\-open false\fR.
|
|
.PP
|
|
The \fBfocus\fR and \fBselection\fR widget commands can be used
|
|
to determine the affected item or items.
|
|
'\" Not yet:
|
|
'\" In Tk 8.5, the affected item is also passed as the \fB\-detail\fR field
|
|
'\" of the virtual event.
|
|
.SH "STYLING OPTIONS"
|
|
.PP
|
|
The class name for a \fBttk::treeview\fP is \fBTreeview\fP.
|
|
The treeview header class name is \fBHeading\fP.
|
|
The treeview item class name is \fBItem\fP.
|
|
The treeview cell class name is \fBCell\fP.
|
|
.PP
|
|
Dynamic states: \fBdisabled\fP, \fBselected\fP.
|
|
.PP
|
|
\fBTreeview\fP styling options configurable with \fBttk::style\fP
|
|
are:
|
|
.PP
|
|
\fB\-background\fP \fIcolor\fP
|
|
.br
|
|
\fB\-fieldbackground\fP \fIcolor\fP
|
|
.br
|
|
\fB\-font\fP \fIfont\fP
|
|
.br
|
|
\fB\-foreground\fP \fIcolor\fP
|
|
.br
|
|
\fB\-rowheight\fP \fIamount\fP
|
|
.RS
|
|
The \fB\-rowheight\fP value is not corrected by the \fBtk scaling\fP
|
|
value or by the configured font size and must always be set. Also make
|
|
sure that the \fB\-rowheight\fP is large enough to contain any images.
|
|
.PP
|
|
To adjust the \fB\-rowheight\fP for the Treeview style, use the following code
|
|
after \fBtk scaling\fP has been applied.
|
|
Note that even if you do not support or change \fBtk scaling\fP
|
|
in your program, your users may have it set in their .wishrc.
|
|
.RE
|
|
.PP
|
|
.CS
|
|
ttk::style configure Treeview \\
|
|
\-rowheight [expr {[font metrics \fIfont\fP \-linespace] + 2}]
|
|
.CE
|
|
.PP
|
|
\fBHeading\fP styling options configurable with \fBttk::style\fP
|
|
are:
|
|
.PP
|
|
\fB\-background\fP \fIcolor\fP
|
|
.br
|
|
\fB\-font\fP \fIfont\fP
|
|
.br
|
|
\fB\-relief\fP \fIrelief\fP
|
|
.PP
|
|
\fBItem\fP styling options configurable with \fBttk::style\fP
|
|
are:
|
|
.PP
|
|
\fB\-foreground\fP \fIcolor\fP
|
|
.br
|
|
\fB\-indicatormargins\fP \fIpadding\fP
|
|
.br
|
|
\fB\-indicatorsize\fP \fIamount\fP
|
|
.br
|
|
\fB\-padding\fP \fIpadding\fP
|
|
.PP
|
|
\fBCell\fP styling options configurable with \fBttk::style\fP
|
|
are:
|
|
.PP
|
|
\fB\-padding\fP \fIpadding\fP
|
|
.PP
|
|
Some options are only available for specific themes.
|
|
.PP
|
|
See the \fBttk::style\fP manual page for information on how to configure
|
|
ttk styles.
|
|
.SH "SEE ALSO"
|
|
ttk::widget(n), listbox(n), image(n), bind(n)
|
|
'\" Local Variables:
|
|
'\" mode: nroff
|
|
'\" End:
|