tooltip(3tk)
NAME
tooltip - Tooltip management
SYNOPSIS
package require Tcl 8.4 package require msgcat 1.3 package require tooltip ?1.4.4? ::tooltip::tooltip command ?options? ::tooltip::tooltip pathName ?option arg? message _________________________________________________________________
DESCRIPTION
This package provides tooltips, small text messages that can be displayed when the mouse hovers over a widget, menu item, canvas item, listbox item or text widget tag.
COMMANDS
::tooltip::tooltip command ?options?
Manage the tooltip package using the following subcommands.
clear index
Prevents the specified widgets from showing tooltips.
pattern is a glob pattern and defaults to matching all
widgets.
delay ?millisecs?
Query or set the hover delay. This is the interval that
the pointer must remain over the widget before the
tooltip is displayed. The delay is specified in
milliseconds and must be greater than 50ms. With no
argument the current delay is returned.
fade ?boolean?
Enable or disable fading of the tooltip. The is enabled
by default on Win32 and Aqua. The tooltip will fade away
on Leave events instead disappearing.
disable
off Disable all tooltips
enable
on Enables tooltips for defined widgets.
::tooltip::tooltip pathName ?option arg? message
This command arranges for widget pathName to display a tooltip
with message message. The tooltip uses a late-binding msgcat
call on the passed in message to allow for on-the-fly language
changes in an application. If the widget specified is a menu,
canvas or text widget then additional options are used to tie
the tooltip to specific menu entries, canvas items or text tags.
-index index
This option is used to set a tooltip on a menu item. The
index may be either the entry index or the entry label.
The widget must be a menu widget but the entries do not
have to exists when the tooltip is set.
-items name
This option is used to set a tooltip for canvas widget or
listbox items. For the canvas widget, the item must
already be present in the canvas widget and will be found
with a find withtag lookup. For listbox widgets the
item(s) may be created later but the programmer is
responsible for managing the link between the listbox
item index and the corresponding tooltip. If the listbox
items are re-ordered, the tooltips will need amending.
If the widget is not a canvas or listbox then an error is
raised.
-tag name
The -tag option can be used to set a tooltip for a text
widget tag. The tag should already be present when this
command is called or an error will be returned. The
widget must also be a text widget.
EXAMPLE
# Demonstrate widget tooltip
package require tooltip
pack [label .l -text "label"]
tooltip::tooltip .l "This is a label widget"
# Demonstrate menu tooltip
package require tooltip
. configure -menu [menu .menu]
.menu add cascade -label Test -menu [menu .menu.test -tearoff 0]
.menu.test add command -label Tooltip
tooltip::tooltip .menu.test -index 0 "This is a menu tooltip"
# Demonstrate canvas item tooltip
package require tooltip
pack [canvas .c]
set item [.c create rectangle 10 10 80 80]
tooltip::tooltip .c -item $item "Canvas item tooltip"
# Demonstrate listbox item tooltip
package require tooltip
pack [listbox .lb]
.lb insert 0 "item one"
tooltip::tooltip .lb -item 0 "Listbox item tooltip"
# Demonstrate text tag tooltip
package require tooltip
pack [text .txt]
.txt tag configure TIP-1 -underline 1
tooltip::tooltip .txt -tag TIP-1 "tooltip one text"
.txt insert end "An example of a " {} "tooltip" TIP-1 " tag.\n" {}
KEYWORDS
balloon, help, hover, tooltip
COPYRIGHT
Copyright (c) 1996-2008, Jeffrey Hobbs
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