NAME
panedwindow - Create and manipulate a paned window widget
SYNOPSIS
panedwindow pathName ?options?
INHERITANCE
itk::Widget <- panedwindow
DESCRIPTION
The panedwindow command creates a multiple paned window widget capable of orienting the panes either vertically or horizontally. Each pane is itself a frame acting as a child site for other widgets. The border separating each pane contains a sash which allows user positioning of the panes relative to one another.
The panedwindow command creates a new Tcl command whose name is pathName. This command may be used to invoke various operations on the widget. It has the following general form:
pathName option ?arg arg ...?
Option and the args determine the exact behavior of the command.
Many of the widget commands for the panedwindow take as one argument an indicator of which pane of the paned window to operate on. These indicators are called indexes and allow reference and manipulation of panes regardless of their current map state. Paned window indexes may be specified in any of the following forms:
pathName cget option
Returns the current value of the configuration option given by option. Option may have any of the values accepted by the panedwindow command.
pathName childsite ?index?
Returns a list of the child site path names or a specific child site given an index. The list is constructed from the near side (left/top) to the far side (right/bottom).
pathName configure ?option? ?value option value ...? Query or modify the configuration options of the widget. If no option is specified, returns a list describing all of the available options for pathName (see Tk_ConfigureInfo for information on the format of this list). If option is specified with no value, then the command returns a list describing the one named option (this list will be identical to the corresponding sublist of the value returned if no option is specified). If one or more option-value 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. Option may have any of the values accepted by the panedwindow command.
pathName delete index
Deletes a specified pane given an index.
pathName fraction percentage percentage ?percentage percentage Sets the visible percentage of the panes. Specifies a set of percentages which are applied to the visible panes from the near side (left/top). The number of percentages must be equal to the current number of visible (mapped) panes and add up to 100.
pathName hide index
Changes the visiblity of the specified pane, allowing a previously displayed pane to be visually removed rather than deleted.
pathName index index
Returns the numerical index corresponding to index.
pathName insert index tag ?option value option value ...? Same as the add command except that it inserts the new pane just before the one given by index, instead of appending to the end of the panedwindow. The option, and value arguments have the same interpretation as for the add widget command.
pathName paneconfigure index ?options?
This command is similar to the configure command, except that it applies to the options for an individual pane, whereas configure applies to the options for the paned window as a whole. Options may have any of the values accepted by the add widget command. If options are specified, options are modified as indicated in the command and the command returns an empty string. If no options are specified, returns a list describing the current options for entry index (see Tk_ConfigureInfo for information on the format of this list).
pathName reset
Redisplays the pane window using default percentages.
pathName show index
Changes the visiblity of the specified pane, allowing a previously hidden pane to be displayed.
NOTES
Dynamic changing of the margin and or minimum options to values which make the current configuration invalid will block subsequent sash movement until the fractions are modified via the fraction method. For example a panedwindow is created with three panes and the minimum and margin options are at their default settings. Next the user moves the sashes to compact the panes to one side. Now, if the minimum is increased on the most compressed pane via the paneconfigure method to a large enough value, then sash movement is blocked until the fractions are adjusted. This situation is unusual and under normal operation of the panedwindow, this problem will never occur.
EXAMPLE
panedwindow .pw -width 300 -height 300 .pw add top
.pw add middle -margin 10
.pw add bottom -margin 10 -minimum 10
pack .pw -fill both -expand yes
foreach pane [.pw childSite] {
button $pane.b -text $pane -relief raised -borderwidth 2 pack $pane.b -fill both -expand yes }
Jay Schmidgall
1994 - Base logic posted to comp.lang.tcl
Joe Hidebrand <hildjj@fuentez.com>
07/25/94 - Posted first multipane version to comp.lang.tcl
07/28/94 - Added support for vertical panes
Ken Copeland <ken@hilco.com>
09/28/95 - Smoothed out the sash movement and added squeezable panes.
AUTHOR
Mark L. Ulferts
KEYWORDS
panedwindow, widget