The Fundamentals of Graphical User Interfaces A simple GUI in R GUI design principles Controls Containers I The gWidgets Package gWidgets: Overview Constructors Methods Event handlers Dialogs Installation gWidgets: Container Widgets Top-level windows Box containers Grid layout: the glayout container Paned containers: the gpanedgroup container Tabbed notebooks: the gnotebook container gWidgets: Control Widgets Buttons Labels Text-editing controls Selection controls Display of tabular data Display of hierarchical data Actions, menus, and toolbars gWidgets: R-specific Widgets A graphics device A data frame editor Workspace browser Help browser Command line widget Simplifying creation of dialogs II The RGtkPackage RGtk2: Overview Synopsis of the RGtk2R Package!RGtkAPI Objects and classes Constructors Methods Properties Events and signals Enumerated types and flags The event loop Importing a GUI from Glade RGtk2: Windows, Containers, and Dialogs Top-level windows Layout containers Dialogs Special-purpose containers RGtk2: Basic Components Buttons Static text and images Input controls Progress reporting Wizards Embedding R graphics Drag-and-drop RGtk2: Widgets Using Data Models Displaying tabular data Displaying hierarchical data Model-based combo boxes Text-entry widgets with completion Sharing buffers between text entries Text views Text buffers RGtk2: Application Windows Actions Menus Toolbars Status reporting Managing a complex user interface Extending GObject Classes III The qtbase Package Qt: Overview The Qt library An introductory example Classes and objects Methods and dispatch Properties Signals Enumerations and flags Extending Qt classes from R QWidget basics Importing a GUI from QtDesigner Qt: Layout Managers and Containers Layout basics Box layouts Grid layouts Form layouts Frames Separators Notebooks Scroll areas Paned windows Qt: Widgets Dialogs Labels Buttons Checkboxes Radio groups Combo boxes Sliders and spin boxes Single-line text QWebView widget Embedding R graphics Drag-and-drop Qt: Widgets Using Data Models Displaying tabular data Displaying lists Model-based combo boxes Accessing item models Item selection Sorting and filtering Decorating items Displaying hierarchical data User editing of data models Drag-and-drop in item views Widgets with internal models Implementing custom models Implementing custom views Viewing and editing text documents Qt: Application Windows Actions Menu bars Context menus Toolbars Status bars Dockable widgets IV The tcltk Package Tcl/Tk: Overview A first example Interacting with Tcl Constructors Events and callbacks Tcl/Tk: Layout and Containers Top-level windows Frames Geometry managers Other containers Tcl/Tk: Dialogs and Widgets Dialogs Selection widgets Tcl/Tk: Text, Tree, and Canvas Widgets Scroll bars Multiline text widgets Menus Treeview widget Canvas widget Concept index Class and method index