# scrolledcanvas - Create and manipulate scrolled canvas widgets

## SYNOPSIS

scrolledcanvas pathName ?options?

## INHERITANCE

itk::Widget <- Labeledwidget <- scrolledcanvas

## STANDARD OPTIONS

activeBackground exportSelection highlightThickness insertWidth selectBackground | background font insertBorderWidth relief selectBorderWidth | borderWidth foreground insertOffTime repeatDelay selectForeground | cursor highlightColor insertOnTime repeatInterval

See the "options" manual entry for details on the standard options.

## ASSOCIATED OPTIONS

closeEnough yScrollIncrement | confine | scrollRegion | xScrollIncrement

See the "canvas" widget manual entry for details on the above associated options.

activeRelief | elementBorderWidth | jump | troughColor

See the "scrollbar" widget manual entry for details on the above associated options.

## INHERITED OPTIONS

labelBitmap labelPos | labelFont labelText | labelImage labelVariable | labelMargin

See the "labeledwidget" class manual entry for details on the inherited options.

## WIDGET-SPECIFIC OPTIONS

    Name:                   autoMargin
    Class:                  AutoMargin
    Command-Line Switch:	-automargin

Specifies the autoresize extra margin to reserve. This option is only effective with autoresize turned on. The default is 10.

    Name:                   autoResize
    Class:                  AutoResize
    Command-Line Switch:	-autoresize

Automatically adjusts the scrolled region to be the bounding box covering all the items in the canvas following the execution of any method which creates or destroys items. Thus, as new items are added, the scrollbars adjust accordingly.

    Name:                   height
    Class:                  Height
    Command-Line Switch:	-height

Specifies the height of the scrolled canvas widget in any of the forms acceptable to Tk_GetPixels. The default height is 30 pixels.

    Name:                   hscrollMode
    Class:                  ScrollMode
    Command-Line Switch:	-hscrollmode

Specifies the the display mode to be used for the horizontal scrollbar: static, dynamic, or none. 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:                   sbWidth
    Class:                  Width
    Command-Line Switch:	-sbwidth

Specifies the width of the scrollbar in any of the forms acceptable to Tk_GetPixels. The default width is 15 pixels..

    Name:                   scrollMargin
    Class:                  ScrollMargin
    Command-Line Switch:	-scrollmargin

Specifies the distance between the canvas and scrollbar in any of the forms acceptable to Tk_GetPixels. The default is 3 pixels.

    Name:                   textBackground
    Class:                  Background
    Command-Line Switch -textbackground

Specifies the background color for the canvas. This allows the background within the canvas to be different from the normal background color.

    Name:                   vscrollMode
    Class:                  ScrollMode
    Command-Line Switch:	-vscrollmode

Specifies the the display mode to be used for the vertical scrollbar: static, dynamic, or none. 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:                   width
    Class:                  Width
    Command-Line Switch:	-width

Specifies the width of the scrolled canvas widget in any of the forms acceptable to Tk_GetPixels. The default height is 30 pixels.

## DESCRIPTION

The scrolledcanvas command creates a scrolled canvas 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.

## METHODS

The scrolledcanvas 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. The following commands are possible for scrolledcanvas widgets:

## ASSOCIATED METHODS

addtag canvasy delete gettags itemconfigure raise type | bbox coords dtag icursor lower scale xview | bind create find index move scan yview | canvasx dchars focus insert postscript select

See the "canvas" manual entry for details on the associated methods.

## WIDGET-SPECIFIC METHODS

pathName cget option

  Returns the current value of the configuration option given by option. Option may have any of the values accepted by the scrolledcanvas command.
  pathName childsite
    Returns the child site widget path name.
  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 scrolledcanvas command.
  pathName justify direction
    Justifies the canvas contents via the scroll bars in one of four directions: left, right, top, or bottom.

  ## COMPONENTS

      Name:                   scrCanvas
      Class:                  Canvas

  The scrCanvas component is the canvas widget. See the "canvas" widget manual entry for details on the scrCanvas component item.

      Name:                   hSB
      Class:                  Scrollbar

  The hSB component is the horizontal scroll bar. See the "ScrollBar" widget manual entry for details on the hSB component item.

      Name:                   vSB
      Class:                  Scrollbar

  The vSB component is the vertical scroll bar. See the "ScrollBar" widget manual entry for details on the vSB component item.

  ## EXAMPLE

        scrolledcanvas .sc

        .sc create rectangle 100 100 400 400 -fill red
        .sc create rectangle 300 300 600 600 -fill green
        .sc create rectangle 200 200 500 500 -fill blue

        pack .sc -padx 10 -pady 10 -fill both -expand yes

  ## AUTHOR

  Mark L. Ulferts

  ## KEYWORDS

  scrolledcanvas, canvas, widget