Messages ABC

To make it possible to create extensions and plug them into the LiveCode engine we’ve created a new flavour of our language called LiveCode Builder. LiveCode Builder looks a lot like LiveCode Script so should feel familiar for any seasoned LiveCode developer. There is lots of new syntax which exposes parts of the LiveCode engine that were only previously available to those who were skilled c/c++ developers.

Creating LiveCode Builder Extensions

We have provided a new “Extension Builder” stack to help make development and packaging of extensions as easy as possible.

Note: LiveCode Builder is a different flavour of LiveCode so it is not possible to edit LiveCode Builder scripts in the main LiveCode Script IDE.

Libraries and widgets

A widget and a library are identical, except that a widget draws to a canvas. As a result, the authoring process is much the same for both extension types.

Message Path

Installed libraries are added to the back of the Message Path.

Tools Palette

Installed widgets are shown in the Tools Palette.

Course Content

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Lessons Status

1

Hello World Library

Introduction

Installing a Text Editor

Creating an LCB library

LCB library definition

LCB handler definitions

Compiling and testing a library in LiveCode

LCB metadata

Installing an LCB Library

Packaging and sharing an LCB library

Including an LCB library in a standalone

Conclusion

2

Extended Hello World Library

Introduction

Explicit Types

LCB Lists and Arrays

Type Conversion between LCB and LiveCode Script

Using Explicit Typing in the Library

Passing Parameters to the Library

Using Lists in the Library

Documenting the Library

Browsing the Documentation

Conclusion

3

Rotated Text Widget

Introduction

Defining a Widget

LCB Module Level Variables

Widget Properties

Widget Handlers

LCB Canvas Operations

Compiling and Testing the Widget

Installing the Widget and adding it to a Stack

Including the Widget in a Standalone

Conclusion

4

Extended Rotated Text Widget

Introduction

Integrating Properties

Accessing LiveCode Control Properties

Handling Mouse Events

Saving and Loading Widgets

Read Only Properties

Documenting the Widget

Conclusion

5

Pie Chart Widget

Introduction

Planning the Widget

Widget Properties

The OnCreate Handler

The OnPaint Handler

Responding to Mouse Events

Saving and Loading the Widget

Installing and Including the Widget in a Standalone

Documenting the Widget

Conclusion

6

Modifying the Line Graph Widget

Introduction

Duplicating the Line Graph Widget

Additional Color Properties

Filling the area below the line

Adding graph marker mouse events

Conclusion

7

Additional Resources

Extending LiveCode Guide

LiveCode Builder Language Reference

LiveCode Builder Style Guide

LiveCode Documentation Format

LiveCode App Building Course

by Steven Crighton on October 9, 2015 No comments

LiveCode App Building Course

Learn by building real world apps.

First, Download LiveCode

Select your operating system below.

Win | Mac | Linux 32 | Linux 64

Get Started

Please note that you have to be logged in to start the course.

Launch Course

Course Content

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Lessons Status

1

Introduction to LiveCode

Introduction to LiveCode

2

Simple Messages

App Introduction

Stacks, Objects and Properties

Constructing the UI

Adding Code

Posting a Message Online

The LiveCode Message Path

Saving as a Standalone

3

Calculator

App Introduction

Constructing the UI: Adding Buttons

Constructing the UI: Setting Button Properties

Constructing the UI: Completing the UI

Constructing the UI: Adding Button Icons

User Events and Messages

Custom Commands and Parameters

Grouping Buttons Together

Entering Numbers

Clearing the Display

Calculating a Percentage

Toggling a Value Between Negative and Positive

Removing the Leading 0

Storing Values

Calculations

Resizing the Number to Fit

Saving as a Standalone

Saving as a Standalone

4

Notes

App Introduction

Notes UI - The List of Notes

Notes UI - Displaying a Note

Notes UI - Navigating Between Cards

Creating a New Note

Displaying the List of Notes

Showing and Editing a Note

Deleting a Note

Updating the UI - Using a Table

Saving as a Standalone

App Introduction

5

Clock

App Introduction

Creating a Navigation Bar

The World Clock UI

The Stopwatch UI

The Timer UI

The Alarm UI

The Edit/Add Alarm UI

Implementing the World Clock

Implementing the Stopwatch

Implementing the Timer

Adding an Alarm

Checking for Alarms

Editing and Deleting Alarms

Saving as a Standalone

6

Web Browser

App Introduction

The Browser UI

The Sharing Options UI

The Bookmarks UI

Creating a Browser Control

Entering a URL and Navigating Around the Browser

Sharing a URL

Bookmarks and the Reading List

Saving as a Standalone

7

Weather

App Introduction

Adding Controls to the Stack

Constructing the UI in the Card Script

Adding a Library Stack

Retrieve Weather Data For Current Location

Update the UI - Days

Update the UI - Temperatures

Update the UI - Forecast

Update the UI - Icons

Update the UI - Breakdown

Update the UI - Background

Converting to Celsius

Swiping

Saving as a Standalone

8

Compass

App Introduction

Building an App for iOS

Building an App for Android

Constructing the UI

Swiping Between Cards

Mobile Sensors

Script for Card "compass"

Script for Card "level"

Submitting an App to the App Store

Submitting an App to Google Play

9

Photos

App Introduction

Introduction to SQLite Databases

Database Example

Binary Data and Image Data

Databases in LiveCode

Creating the Photos Database

Database Handling

Creating a Thumbnail

Constructing the UI

Navigating Between the Cards

Listing Photos

Selecting Photos

Importing Photos

Deleting Photos

Sharing Photos

Viewing Photos

Viewing a Single Photo

Additional Actions

Viewing Albums

Listing Albums

Album Header Actions

Viewing Albums II

Adding Photos to Albums

Hour Of Code

by Georgia Hutchings on September 29, 2015 No comments

The Hour of Code

And your hour with LiveCode!

Everyone’s Invited

The Hour of Code is an international initiative that introduces millions of students to one hour of computer science. Because everyone should have access to computer science. Computer science nurtures problem-solving skills, logic, and creativity while also providing students with a foundation for success in any 21st century career path.

Course Content

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Lessons Status

1

Jungle Soundboard

Introduction

Creating An App

Adding Buttons

Starting to Add Code

Finishing the App

Sharing your app

2

Messages App

Learn by building real world apps.

First, Download LiveCode

Course Content

LiveCode 8 App Building Course

Learn by building real world apps.

First, Download LiveCode

Course Content

LiveCode Builder Extensions

Creating LiveCode Builder Extensions

Libraries and widgets

Message Path

Tools Palette

Course Content

LiveCode App Building Course

Learn by building real world apps.

First, Download LiveCode

Course Content

Course Content

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