Tcl/Tk 8.5 Programming Cookbook -- Copyright -- Credits -- About the Author -- Acknowledgment -- About the Reviewers -- www.PacktPub.com -- Support files, eBooks, discount offers and more -- Why Subscribe? -- Free Access for Packt account holders -- Preface -- What this book covers -- What you need for this book -- Who this book is for -- Conventions -- Reader feedback -- Customer support -- Errata -- Piracy -- Questions -- 1. The Tcl Shell -- Introduction -- The Tcl shell -- Writing to the Tcl console -- Getting ready -- How to do it… -- How it works… -- Mathematical expressions -- Tcl expr operands -- Mathematical functions -- Computing mathematical expressions -- Referencing files in Tcl -- UNIX (UNIX, Linux and Mac OS X) -- Windows -- Variables -- Basic variable commands -- Getting Ready -- How to do it… -- How it works… -- There's more… -- Unsetting a variable -- Command line arguments -- Launching a Tcl script -- Getting Ready -- How to do it… -- How it works… -- There's more… -- 2. Using the Building Blocks Control Constructs -- Introduction -- Controlling flow with the if statement -- How to do it… -- How it works… -- There's more… -- Looping with for -- How to do it… -- How it works… -- Looping with foreach -- How to do it… -- How it works… -- Looping with while -- How to do it… -- How it works… -- Continuing a procedure -- How to do it… -- How it works… -- Breaking out of a procedure -- How to do it… -- How it works… -- Nested looping -- How to do it… -- How it works… -- There's more… -- 3. Error Handling -- Introduction -- Using the catch command -- Getting ready -- How to do it… -- How it works… -- Using the eval command -- Getting ready -- How to do it… -- How it works… -- There's more… -- Using the error command -- Getting ready -- How to do it… -- How it works… -- Error handling procedure -- Getting ready -- How to do it….

How it works… -- 4. Handling String Expressions -- Introduction -- Appending to a string -- How to do it… -- How it works… -- Formatting a string -- How to do it… -- How it works… -- Matching a regular expression within a string -- Getting ready -- How to do it… -- How it works… -- Performing character substitution on a string -- How to do it… -- How it works… -- Parsing a string using conversion specifiers -- How to do it… -- How it works… -- Determining the length of a string -- How to do it… -- How it works… -- Comparing strings -- Getting ready -- How to do it… -- How it works… -- Comparing a string of characters -- How to do it… -- How it works… -- Locating the first instance of a character -- How to do it… -- How it works… -- Locating the index of a character -- How to do it… -- How it works… -- Determining the class of a string -- How to do it… -- How it works… -- Locating the last instance of a string -- How to do it… -- How it works… -- Determining the size of a string -- How to do it… -- How it works… -- Replacing values within a string -- How to do it… -- How it works… -- Locating a pattern within a string -- How to do it… -- How it works… -- Returning a range of characters from a string -- How to do it… -- How it works… -- Creating a string of repeated characters -- How to do it… -- How it works… -- Replacing ranges of characters contained within a string -- How to do it… -- How it works… -- Creating a reverse string -- Getting ready -- How to do it… -- How it works… -- Converting a string to lowercase -- How to do it… -- How it works… -- Converting a string to title -- How to do it… -- How it works… -- Converting a string to uppercase -- How to do it… -- How it works… -- Trimming a string -- How to do it… -- How it works… -- Trimming leading whitespace -- How to do it… -- How it works… -- Trimming trailing whitespace -- How to do it….

How it works… -- Locating the word end -- How to do it… -- How it works… -- Locating the word start -- How to do it… -- How it works… -- Performing variable substitution -- How to do it… -- How it works… -- 5. Expanding String Functionality Using Lists -- Introduction -- Creating a list -- How to do it… -- How it works… -- There's more… -- Joining two lists -- How to do it… -- How it works… -- There's more… -- Joining list elements -- How to do it… -- How it works… -- There's more… -- Appending list elements -- How to do it… -- How it works… -- Assigning list elements to variables -- How to do it… -- How it works… -- Retrieving an element from a list -- How to do it… -- How it works… -- Inserting elements into a list -- How to do it… -- How it works… -- Determining the number of elements -- How to do it… -- How it works… -- Getting a list element -- How to do it… -- How it works… -- Repeating elements -- How to do it… -- How it works… -- There's more… -- Replacing elements -- How to do it… -- How it works… -- Reversing elements -- How to do it… -- How it works… -- Searching a list -- How to do it… -- How it works… -- Editing a list -- How to do it… -- How it works… -- Sorting a list -- How to do it… -- How it works… -- Splitting a string into a list -- How to do it… -- How it works… -- 6. The Tcl Dictionary -- Introduction -- Creating a dictionary -- How to do it… -- How it works… -- There's more… -- Using set with the dict create command -- Appending to a dictionary -- How to do it… -- How it works… -- Determining if a key exists -- How to do it… -- How it works… -- Filtering a dictionary -- How to do it… -- How it works… -- There's more… -- Searching a dictionary -- How to do it… -- How it works… -- Getting a record -- How to do it… -- How it works… -- Incrementing a value -- How to do it… -- How it works… -- Getting the dictionary structure.

How to do it… -- How it works… -- Getting a list of keys -- How to do it… -- How it works… -- Appending to an existing record -- How to do it… -- How it works… -- Merging two dictionaries -- How to do it… -- How it works… -- Creating a blank dictionary structure -- How to do it… -- How it works… -- Updating variables from a dictionary -- How to do it… -- How it works… -- Determining the size of a dictionary -- How to do it… -- How it works… -- Getting all records -- How to do it… -- How it works… -- Assigning values -- How to do it… -- 7. File Operations -- Introduction -- Opening a file -- How to do it… -- How it works… -- There's more… -- Configuring a file -- How to do it… -- There's more… -- Opening a command pipeline -- How to do it… -- How it works… -- There's more… -- Writing a file -- How to do it… -- How it works… -- Reading a file -- How to do it… -- How it works… -- Closing a file -- How to do it… -- How it works… -- File handling -- Getting ready -- How to do it… -- How it works… -- 8. Tk GUI Programming with Tcl/Tk -- Introduction -- Creating a widget -- How to do it… -- How it works… -- There's more… -- Writing to the console -- How to do it… -- How it works… -- Setting the attributes of the window through window manager -- How to do it… -- How it works… -- Creating an additional window -- Standard options: -- Window-specific options -- Commands -- How to do it… -- How it works… -- Destroying a window -- How to do it… -- How it works… -- There's more… -- Creating a custom dialog -- How to do it… -- How it works… -- 9. Configuring and Controlling Tk Widgets -- Introduction -- Creating a frame widget -- How to do it… -- How it works… -- Creating a label widget -- How to do it… -- How it works… -- Creating an entry widget -- How to do it… -- How it works… -- Creating a button widget -- How to do it… -- How it works….

Creating a listbox widget -- How to do it… -- How it works… -- Creating an image -- Getting ready -- How to do it… -- How it works… -- Creating a simple form -- How to do it… -- How it works… -- 10. Geometry Management -- Introduction -- Controlling layout with the pack command -- How to do it... -- How it works… -- Controlling layout with the grid command -- How to do it… -- How it works… -- Combining pack and grid -- How to do it… -- How it works… -- Creating an address book interface -- Getting ready -- How to do it… -- How it works… -- 11. Using Tcl Built-in Dialog Windows -- Introduction -- Displaying a message box -- How to do it… -- How it works… -- Displaying a confirmation dialog -- How to do it… -- How it works… -- Displaying the color picker -- How to do it… -- How it works… -- Displaying the directory dialog -- How to do it… -- How it works… -- Displaying the file selection dialog -- How to do it… -- How it works… -- Selecting a directory and file -- How to do it… -- How it works… -- 12. Creating and Managing Menus -- Introduction -- Creating a menu -- How to do it… -- How it works… -- Adding menu buttons -- How to do it… -- How it works… -- Displaying a pop-up menu -- How to do it… -- How it works… -- Data entry application -- How to do it… -- How it works… -- 13. Creating the Address Book Application -- Introduction -- Creating the Address Book application -- How to do it… -- How it works… -- Adding a record -- How to do it… -- How it works… -- Navigating records -- How to do it… -- How it works… -- Deleting a record -- How to do it… -- How it works… -- Finding a record -- How to do it… -- How it works… -- Full listing.