Effective Tcl/Tk Programming

Table of Contents Preface Chapter 1: Building Tcl/Tk Applications Application-building process * A small application * Designing the application * Designing the screen * Prototyping the screen * Library analysis * Adding behavior to the program * Adding finishing touches * Testing the program * Packaging the program Chapter 2: Packing, Gridding, and Placing Windows Using the pack command * Cavity-based model * Packing options * Packing order * Hierarchical packing * Compressing windows * Enlarging windows * Unpacking widgets * Using the grid command * Grid-based model * Gridding options * Resizing windows * Mixing grid and pack * Using the place command * Coordinate-based model * Custom geometry managers Chapter 3: Handling Events The event loop * Keyboard focus * Forcing updates * Handling long-running bindings * Execution scope * Quoting and the event loop * Simple examples using bind * Selecting an item from a listbox * Automatic button help * Class bindings * Syntax of the bind command * The event specification * Percent substitutions * More complex events * Click, drag, drop * Customizing widget behavior * Binding tags * Default binding tags * Using break to interrupt event processing * Inventing binding tags for groups of bindings * Binding to a toplevel widget * Debugging bindings * Displaying bindings * Monitoring events * Animation * Animating items on a canvas * Debugging after events * Library procedures for animation Chapter 4: Using the Canvas Widget Understanding the canvas widget * Scrolling * Display list model * Using tags * Canvas bindings * Scrollable form * Progress gauge * HSB color editor * Tabbed notebook * Calendar * Handling size changes * Sensors and callbacks * Monitoring variables * Simple drawing package * Drawing items * Selecting items * Moving and deleting items * Configuring items * Resizing items * Entering text * Printing a drawing * Saving a drawing * Loading a drawing Chapter 5: Using the Text Widget Understanding the text widget * Indexing model * Scrolling * Using tags * Text bindings * Using marks * Wrap modes * Tab stops * Simple text editor * Read-only text display * Appointment editor * Using tags to apply styles * Embedded windows * Changing text bindings * Retrieving appointments * Hierarchical browser * Hierarchical data * Creating the hierarchical browser * Using tags and marks Chapter 6: Top-level Windows Toplevel widgets * Setting the widget class * Communicating with the window manager * Window placement * Window size * Simple dialogs * Modal dialogs * Controlling access to dialogs * Create/destroy strategy * Help from the window manager * Show/hide strategy * Unmanaged windows * Introductory placard * Balloon help Chapter 7: Interacting with Other Programs Executing other programs * Execution pipelines * Building commands and handling errors * Collecting output from long-running programs * Driving other programs without temporary files * Working aroun