## Tcl8.6.15/Tk8.6.15 Documentation > Tk Commands, version 8.6.15 > messageBox

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  NAME
    tk_messageBox — pops up a message window and waits for user response.
  SYNOPSIS
  DESCRIPTION
    -command string
    -default name
    -detail string
    -icon iconImage
    -message string
    -parent window
    -title titleString
    -type predefinedType
      abortretryignore
      ok
      okcancel
      retrycancel
      yesno
      yesnocancel
  EXAMPLE
  KEYWORDS

### NAME

tk_messageBox — pops up a message window and waits for user response.

### SYNOPSIS

tk_messageBox ?option value ...?

### DESCRIPTION

This procedure creates and displays a message window with an application-specified message, an icon and a set of buttons. Each of the buttons in the message window is identified by a unique symbolic name (see the -type options). After the message window is popped up, tk_messageBox waits for the user to select one of the buttons. Then it returns the symbolic name of the selected button.

The following option-value pairs are supported:

-command string
  Specifies the prefix of a Tcl command to invoke when the user closes the dialog. The actual command consists of string followed by a space and the name of the button clicked by the user to close the dialog. This is only available on macOS.

-default name
  Name gives the symbolic name of the default button for this message window ( “ok”, “cancel”, and so on). See -type for a list of the symbolic names. If this option is not specified, the first button in the dialog will be made the default.

-detail string
  Specifies an auxiliary message to the main message given by the -message option. The message detail will be presented beneath the main message and, where supported by the OS, in a less emphasized font than the main message.

-icon iconImage
  Specifies an icon to display. IconImage must be one of the following: error, info, question or warning. If this option is not specified, then the info icon will be displayed.

-message string
  Specifies the message to display in this message box. The default value is an empty string.

-parent window
  Makes window the logical parent of the message box. The message box is displayed on top of its parent window.

-title titleString
  Specifies a string to display as the title of the message box. The default value is an empty string.

-type predefinedType
  Arranges for a predefined set of buttons to be displayed. The following values are possible for predefinedType:

  abortretryignore
    Displays three buttons whose symbolic names are abort, retry and ignore.

  ok
    Displays one button whose symbolic name is ok. This is the default.

  okcancel
    Displays two buttons whose symbolic names are ok and cancel.

  retrycancel
    Displays two buttons whose symbolic names are retry and cancel.

  yesno
    Displays two buttons whose symbolic names are yes and no.

  yesnocancel
    Displays three buttons whose symbolic names are yes, no and cancel.

### EXAMPLE

    set answer [tk_messageBox -message "Really quit?" \
            -icon question -type yesno \
            -detail "Select \"Yes\" to make the application exit"]
    switch -- $answer {
        yes exit
        no {tk_messageBox -message "I know you like this application!" \
                -type ok}
    }

### KEYWORDS

message box
Copyright © 1996 Sun Microsystems, Inc.