The Wolfram Language's unified symbolic architecture makes it incredibly easy to create dialog boxes that range from the straightforward to the highly elaborate and customized. Every dialog box is a notebook with arbitrary layout and styling, in which arbitrary actions defined by Wolfram Language programs can immediately be applied through the Dynamic mechanism.

MessageDialog — put up a dialog box to display a message

ChoiceDialog — put up a dialog box with buttons to make choices

DialogInput — put up a dialog and return what is supplied to DialogReturn

CreateDialog — put up a dialog, but let Wolfram Language evaluation continue

DialogNotebook — create a custom dialog window

Input, InputString — get input from a simple dialog box

SystemDialogInput — get input through system dialog boxes (files, colors, sound, ...)

AuthenticationDialog — put up a dialog to request authentication credentials

Buttons

DefaultButton  ▪  CancelButton  ▪  ChoiceButtons  ▪  Button

DialogReturn — close a dialog, possibly returning a value

ClickToCopy — copy the given expression to the clipboard when clicked

Controls »

Checkbox  ▪  PopupMenu  ▪  SetterBar  ▪  InputField  ▪  ProgressIndicator  ▪  RadioButton  ▪  RadioButtonBar  ▪  FileNameSetter  ▪  ColorSetter  ▪  ...

Layout & Organization »

Text  ▪  Grid  ▪  Panel  ▪  Item  ▪  Enabled  ▪  TabView  ▪  OpenerView  ▪  ...

Annotation & Labeling

Tooltip  ▪  Labeled  ▪  Text  ▪  Graphics  ▪  WindowTitle

Modal — specify whether a dialog box is modal to the front end