Please check out this book. Preview the book. Authored by Dr. Liew, creator of the popular online Visual Basic Tutorial vbtutor. By the end of this book, you will gain a comprehensive understanding of basic Excel VBA as well as VB6 concepts and be able to create your own code from scratch.
You will learn how to:. Best of all, you will gain inspiration from a variety of interesting examples like a calculator, stock trading program, slot machine, Star Wars, and more. You may modify the examples easily to suit your needs.
Liew Voon Kiong. This will consist of a menu structure with headings that will let you access the many exercises and examples you complete. This procedure is used to exit from running the project display and return to the design screens. Click towards the centre-top of your form and position and resize your label as required.
Use the image icon on your toolbox to add the image to your form. Use the properties window of the image to select a picture. Use the command Button icon to add the button. An object has a set of properties.
Each property of the object has a value. Event handlers transfer data to procedures that complete the task. The results of these procedures are returned back to other screen objects, e. A procedure attached to an object, such as a button, is a command used to make something happen, e. Show where FormXX is the new form name.
Activity 2 1. Open a new form and change its name to ColourChanger. Place the following objects on this form. Use cut and paste to make the task easier. Value, HScroll2. Value, HScroll3. Value Label5. Value Label1. Value, - HScroll2. Value, - HScroll3. Value, 0, 0 Label3. Value, 0 Label4. Value 3. Use the Project Explorer window to return to your main form and double click example 2 in your menu to add the appropriate code.
Save and backup. Naming conventions Up till now, we have often accepted default names, Text1, Label1, etc.
In a big project, this is not good practice as it makes the code harder to read or maintain. Naming conventions use a prefix of three lowerCase letters to identify the type of control, followed by a meaningful name. A variable can only hold one datatype. A program can have as many variables as you need but before you can use a variable it must be declared. True or False e. Often called double-precision.
Often called single-precision. Visual Basic includes many built-in functions intrinsic functions. Some perform basic mathematical tasks. Others manipulate string data such as converting text to upperCase or lowerCase letters. An argument is a value you pass to a function so the function has data to work with. Function names have parentheses at the end to hold the function arguments. Even if a function has no arguments, the parenthesis are required.
Two intrinsic functions include message boxes and input boxes. Download Free PDF. Visual Basic Made Easy. A short summary of this paper.
All other trademarks belong to their respective owners. Liability The purpose of this book is to provide basic guides for people interested in Visual Basic programming. Although every effort and care has been taken to make The information as accurate as possible, the author shall not be liable for any error, Harm or damage arising from using the instructions given in this book. No Part of this e-book may be reproduced in any form or by any means, without permission in writing from the author.
Acknowledgement I would like to express my sincere gratitude to the many people who have made their contributions in one way or another to the successful publication of this book. My special thanks go to my children Xiang, Yi and Xun who have contributed their ideas and help in editing this book. I would also like to appreciate the support provided by my beloved wife Kim Huang and my youngest daughter Yuan.
About the Author Dr. He has been involved in Visual Basic programming for more than 20 years. It has consistently been one of the highest ranked Visual Basic websites. To provide more support for Visual Basic students, teachers, and hobbyists, Dr. Liew has written this book to complement the free Visual Basic tutorial with much more content. Else Then Statement Example Then…Else Statement Example Then…ElseIf Statement Example Next Loop Example NET The final version of the classic Visual Basic was Visual Basic 6.
Visual Basic 6 is a user-friendly programming language designed for beginners. Many developers still favor VB6 over its successor VB. In , Microsoft released Visual Basic. NET VB. NET to replace Visual Basic 6. Thereafter, Microsoft declared VB6 a legacy programming language in However, Microsoft still provides some form of support for VB6.
NET is a fully object-oriented programming language implemented in the. NET Framework. It was created to cater for the development of the web as well as mobile applications.
Subsequently, Microsoft has released many versions of VB. Although the.
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