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    gnocl::linkButton

    A widget which can be used to direct the user to a www URL.

    Synopsis

    gnocl::linkButton [-option value...]

    Screenshot

    Options

    -active boolean
    This option sets the widget active. Since one button of the group must be active, a button can only set to non active by setting another button to active. This overrides the value of the associated variable. The associated variable is set accordingly.
    -data string
    User defined data which can be retrieved via the cget subcommand.
    -hasFocus 1
    This sets the focus to the widget. To unset the focus it must be set to another widget.
    -indicatorOn boolean (default: true)
    Determines whether or not the toggle button is drawn on screen
    -name string
    Name of the widget, can be used to set options in an rc file.
    -onClicked string (default: "")
    Tcl script which is executed if the "popup-menu" signal is received, which is normally the case if the user presses Shift-F10. Before evaluation the following percent strings are substituted:

    %w    widget name
    %u    uri
    -onPopupMenu string (default: "")
    Tcl script which is executed if the "popup-menu" signal is received, which is normally the case if the user presses Shift-F10. Before evaluation the following percent strings are substituted:

    %w    widget name
    -onShowHelp string (default: "")
    Tcl script which is executed in the global scope if the "show-help" signal is received, which is normally the case if the user presses F1 or Ctrl-F1. Before evaluation the following percent strings are substituted:

    %w    widget name
    %h    help type: either "whatsThis" or "tooltip"
    -relief one of normal, half or none (default: normal)
    Relief of the button.
    -sensitive boolean (default: 1)
    Whether or not the item is sensitive to user input.
    -text string
    Text of the button. If this option is set, then the button will not display the uri.
    -tooltip string
    Message that appear next to this widget when the mouse pointer is held over it for a short amount of time.
    -uri string
    The uri that the widget is linked to. This value needs to be set for the widget to function properly. If the -text option is also set, then the widget will display the text, yet still link to the specified uri.
    -variable string
    NOTE: Required option.
    -visible boolean (default: 1)
    Whether or not the item is visible.

    Description

    The gnocl::linkButton provides a UI hyperlink, similar to the one used by web browsers, which triggers an action when clicked. It is useful to show quick links to resources.

    Commands

    id cget option
    Returns the value for one option. The option may have any of the values accepted by configure.
    id configure [-option value...]
    Configures the widget. Option may have any of the values accepted on creation of the widget.
    id delete
    Deletes the widget and the associated Tcl script.
    id onClicked
    Executes the command given by the -onToggled option of the active item in the group.

    Example

    set box [gnocl::box]

    set but5 [gnocl::linkButton \
         -uri www.bbc.co.uk \
         -onClicked {eval exec firefox %u &}]]

    set but6 [gnocl::linkButton \
         -uri www.bbc.co.uk \
         -text HOMEPAGE \
         -onClicked {eval exec firefox %u &}]]

    $box add [list $but5 $but6 ]


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