Getting Started p. 1 Obtaining Tcl/Tk p. 1 Interactive Execution p. 1 Direct Execution p. 4 Reading this Book p. 6 Requirements for Networking

Transcription

1 Foreword p. xi Acknowledgments p. xiii Getting Started p. 1 Obtaining Tcl/Tk p. 1 Interactive Execution p. 1 Direct Execution p. 4 Reading this Book p. 6 Requirements for Networking Examples p. 7 Requirements for the C/C++ Connection p. 7 Tcl/Tk Version Requirements p. 8 Tcl p. 9 Basic Syntax and I/O p. 11 The Form of a Tcl Script p. 11 Variables in Tcl p. 13 Copying a File Line by Line p. 15 While Loop p. 16 Curly Brackets p. 16 Double Quotes p. 18 Command Substitution p. 18 Opening Files p. 20 Completed File Copying Example p. 21 More about Substitution p. 22 Solutions to Exercises p. 24 Expressions and Branching p. 29 Expressions p. 29 Branching p. 33 Math Functions p. 35 Solutions to Exercises p. 36 Procedures p. 39 Procedures p. 39 Global and Local Variables p. 41 Passing Arguments by Reference p. 43 Default Values for Parameters p. 44 Reimplementing Procedures p. 45 Regional Variables p. 45 Action Families p. 50 An Example Action Family p. 52 Implementing Action Families in Earlier Versions of Tcl p. 54 Error Handling p. 56 Procedures Defining Procedures p. 57 Solutions to Exercises p. 58

2 Data Structures and Iteration p. 65 Associative Arrays and the Concept of Function p. 65 Using Arrays for Missing Features p. 67 Procedures for Working with Arrays p. 68 The scan and format Procedures p. 70 Lists p. 72 An Action Family for Working with Lists p. 74 Lists Support Flexible Argument Usage p. 76 Switches and Options p. 77 Iteration p. 80 Indexing Web Sites p. 84 Solutions to Exercises p. 85 Strings, Files, and Glob Pattern Matching p. 91 The string Action Family p. 91 The file Action Family p. 94 The info Action Family p. 97 Glob Patterns p. 99 Commands Accepting Glob Patterns p. 101 Developing for Multiple Platforms p. 103 A Virtual Machine p. 105 Solutions to Exercises p. 110 Regexp and Regsub p. 117 Theory and Practice p. 117 Character Set, Quoting, and Style p. 118 Regular-Expression versus Glob Patterns p. 119 Repetitions and Branches p. 123 Use Parentheses to Build more Complicated Patterns p. 125 Use Parentheses to Extract Subpatterns p. 126 Search and Replace p. 128 Style Review p. 129 Solutions to Exercises p. 129 Tcl Odds and Ends p. 133 Starting Processes and Pipes p. 133 More about I/O p. 135 More about Variables p. 137 The clock Action Family p. 140 Building Command Lines p. 144 Object Action Families p. 145 Executing Scripts from within Scripts p. 145 Interpreter Hierarchies p. 147 Delaying Execution p. 148

3 Performance Testing p. 148 The Current Directory p. 149 Binary Data p. 149 Solutions to Exercises p. 150 More about Procedures p. 153 Packages and Automatically Sourcing Procedures p. 153 Loading Procedures in Binary Form p. 155 On Control Structures p. 156 Example Control Structure p. 160 Solutions to Exercises p. 162 TCP/IP Networks and Event-Driven Programming p. 165 TCP/IP Networks as Seen from Tcl p. 165 The World Wide Web as a Client/Server Application p. 168 Creating a Web Client in Tcl p. 172 The Event Loop p. 174 Timeouts p. 179 Background Error Handling p. 179 Client/Server the Tcl Way p. 180 More about the Event Loop p. 184 The http Package p. 185 A Brief HTML Introduction p. 190 Solutions to Exercises p. 193 Tk p. 207 Overview of Tk p. 209 Starting with Tk p. 209 The Tk Way of Thinking p. 211 Details of the Caps Example p. 216 Enhancing Caps with Tab p. 218 Cleaning Up the Root Window p. 221 Multiplatform Caveat p. 221 Solutions to Exercises p. 223 Widget Characteristics p. 225 Focus p. 225 Size p. 227 Frames, the Archetypal, No-Frills Widgets p. 227 Colors p. 230 Fonts p. 232 Mouse Cursor p. 234 Common Options p. 235 Solutions to Exercises p. 235 Geometry Management p. 239

4 The pack and grid Action Families p. 239 Slicing p. 240 Slicing for Size Changes p. 243 Padding p. 246 An Array of Cells p. 247 The Cavity p. 250 Placing Widgets more Carefully p. 252 Tricks for Using Pack p. 254 Solutions to Exercises p. 255 Some Basic Widget Types p. 261 Labels p. 261 Buttons p. 264 Entries p. 265 Images p. 269 Widget Padding p. 272 Active/Normal/Disabled p. 272 Selection p. 274 Solutions to Exercises p. 274 List of Widget Types p. 281 Button p. 281 Canvas p. 282 Checkbutton p. 282 Entry p. 284 Frame p. 284 Label p. 285 Listbox p. 285 Menu and Menubutton p. 286 Message p. 287 Radiobutton p. 289 Scale p. 291 Scrollbar p. 295 Text p. 296 Toplevel p. 296 Exercises p. 297 Solutions to Exercises p. 300 Bindings p. 307 User Events p. 307 Getting Information to Event Handlers p. 310 Bindings p. 311 More about Bindings p. 314 Timing p. 318

5 Solutions to Exercises p. 319 Partially Displayed Widgets p. 323 Listboxes p. 323 Scrollbars p. 327 Menus and Menubuttons p. 329 Option Menus p. 335 Solutions to Exercises p. 337 Text Widgets p. 343 A Multiline Entry Widget and More p. 343 Marks and Indexing p. 347 Text Tags p. 351 Tag Subactions p. 354 Tag Options p. 356 Embedded Widgets p. 358 Solutions to Exercises p. 360 Canvases p. 367 Introduction, Subwindows, and Scrolling p. 367 Anchoring and Discrete Scrolling p. 369 A Script for Examining Canvas Items p. 371 The Oval is a Typical Item p. 372 Canvas Tags p. 373 A Tour of Canvas Items p. 373 Changing Option Values p. 378 Moving Items p. 379 Identifying an Item or Tagged Set under the Mouse p. 381 Canvas-Object Actions p. 383 PostScript p. 386 Implementing the Item Examining Script p. 387 Solutions to Exercises p. 391 Tk Odds and Ends p. 401 The winfo Action Family p. 401 The wm Action Family p. 402 Cutting and Pasting p. 404 Asserting Primacy among Windows p. 406 A New Command Window p. 407 Solutions to Exercises p. 410 The Browser Plugin and Safe-Tcl p. 415 The Tcl/Tk Plugin p. 416 Combining Features into Policies p. 424 Writing Tclets p. 428 Customizing Slave Interpreters p. 429

6 Safe-Tcl p. 433 Solutions to Exercises p. 433 C/C++ p. 437 The C/C++ Connection p. 439 Data Types in Transition p. 439 C Procedures that Run as Tcl/Tk Commands p. 441 Naming Conventions p. 444 Registering Commands p. 445 Extending Tcl with the Recompile/Relink Method p. 447 Extending Tcl with the Load Method p. 448 Creating Math Functions p. 452 Tk p. 454 Solutions to Exercises p. 454 Essential Library Functions p. 459 Allocating Memory p. 459 Manipulating Objects of Type Tcl_Obj p. 462 More about Command Execution p. 466 Accessing Tcl Variables p. 468 List Processing p. 472 Solutions to Exercises p. 474 Some Useful Library Functions p. 485 Checking Arguments p. 485 Dynamic Strings p. 487 Pattern Matching p. 489 Associative Arrays p. 492 Multiple Associative Arrays p. 494 Solutions to Exercises p. 498 Creating Tcl Objects in C/C++ p. 503 Object Orientation in C p. 503 Object Orientation in Tcl p. 508 Implementing Object Actions p. 510 Implementing Class Actions p. 511 Commands that Work with Multiple Objects p. 513 Solutions to Exercises p. 520 Bibliography p. 537 Index p. 539 Table of Contents provided by Blackwell's Book Services and R.R. Bowker. Used with permission.