1DialogBox(3)          User Contributed Perl Documentation         DialogBox(3)
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NAME

6       Tk::DialogBox - create and manipulate a dialog screen.
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SYNOPSIS

9           use Tk::DialogBox
10           ...
11           $d = $top->DialogBox(-title => "Title", -buttons => ["OK", "Cancel"]);
12           $w = $d->add(Widget, args)->pack;
13           ...
14           $button = $d->Show;
15

DESCRIPTION

17       DialogBox is very similar to Dialog except that it allows any widget in
18       the top Frame. DialogBox creates two Frames, top and bottom. The bottom
19       Frame shows all the specified Buttons, lined up from left to right. The
20       top Frame acts as a container for all other widgets that can be added
21       with the add() method.
22

OPTIONS

24       The options recognized by DialogBox are as follows:
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26       -title
27           Specify the title of the DialogBox. If this is not set, then the
28           name of the program is used.
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30       -buttons
31           The button names to display in the bottom Frame. This is a
32           reference to an array of strings containing the text to put on each
33           Button. There is no default value for this. If you do not specify
34           any button names, no Buttons are displayed.
35
36       -default_button
37           Specifies the default Button that is considered invoked when user
38           presses <Return> on the DialogBox. This Button is highlighted. If
39           no default Button is specified, then the first element of the array
40           whose reference is passed to the -buttons option is used as the
41           default.
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43       -cancel_button
44           Specifies the Button that is considered invoked when the user
45           closes the DialogBox using the window manager's close button. If
46           the -cancel_button option is not given, and if there's only one
47           button configured, then this button is also used as the cancel
48           button.  Otherwise no button is considered as the cancel button; in
49           such a case Show just returns "undef" when the user closes the
50           DialogBox.
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52       -command
53           A callback which is executed after invoking an action to close the
54           DialogBox, but before restoring focus and grab information. The
55           selected button is passed as the first argument.
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57       -focus
58           Specify the widget to receive the initial focus after popping up
59           the DialogBox. By default the -default_button widget receives the
60           initial focus.
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62       -showcommand
63           A callback which is executed before displaying the DialogBox and
64           waiting for user input. The DialogBox itself is passed as the first
65           argument.
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METHODS

68       DialogBox supports only two methods as of now:
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70       add(widget, options)
71           Add the widget indicated by widget. Widget can be the name of any
72           Tk widget (standard or contributed). options are the options that
73           the widget accepts. The widget is advertized as a subwidget of
74           DialogBox. The name of widget is lower-cased and used as the
75           advertised name. If multiple instances of widget are created in the
76           DialogBox, then only the last one gets the advertised name. add()
77           does not automatically pack() or grid() widget into the DialogBox.
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79       Show(?-global?)
80           Displays the Dialog until the user invokes one of the Buttons in
81           the bottom Frame. If the grab type -global is specified, then Show
82           uses that grab; otherwise it defaults to a local grab. Returns the
83           name of the Button invoked.
84
85           The actual Dialog is shown using the Popup method. Any other
86           options supplied to Show are passed to Popup, and can be used to
87           position the Dialog on the screen. Please read Tk::Popup for
88           details.
89
90       Exit()
91           Close the dialogbox, by emulating a click on the default button.
92

ADVERTISED WIDGETS

94       top The subwidget reference to the top half of the DialogBox widget,
95           the Frame containing widgets added by the add method.
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97       bottom
98           The subwidget reference to the bottom half of the DialogBox widget,
99           the Frame containing the Button widgets.
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101       B_"button-text"
102           Individual subwidget references to the Buttons in the DialogBox
103           widget. The subwidget name is the string B_ concatenated with the
104           Button's -text value.
105

BUGS

107       There is no way of removing a widget once it has been added to the top
108       Frame, unless you access the top subwidget and go through the child
109       widgets.
110
111       There is no control over the appearance of the Buttons in the bottom
112       Frame nor is there any way to control the placement of the two Frames
113       with respect to each other.
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AUTHOR

116       Rajappa Iyer rsi@earthling.net
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118       This code is distributed under the same terms as Perl.
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122perl v5.28.1                      2019-02-12                      DialogBox(3)
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