Introductory Beginning

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By John W. Rittinghouse

A Beginner's advisor to Gambas is the 1st definitive reference for the Linux-based Gambas programming language. Gambas ships with a graphical improvement atmosphere according to the elemental programming language. It helps object-oriented programming and is the same to Microsoft's visible uncomplicated product. Gambas makes use of the Qt toolkit and helps different toolkits like GTK+. With Gambas, you could quick layout a person interface, entry databases from MySQL, SQLite, and PostgreSQL, or remotely pilot KDE purposes utilizing the DCOP protocol. Rittinghouse masterfully describes the main points of this new language with lots of examples and illustrations that make it effortless to appreciate.

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BackColor is defined as PROPERTY BackColor AS Integer This integer value represents the color used for the control background. It is synonymous with the Background property. Note that PROPERTY is a predefined data­type used internally in Gambas. Red 62 A Beginner's Guide to Gambas Alternatively, if you know the RGB (red, green, blue) or HSV (hue, saturation, value) values for a specific color, Gambas provides a means to convert those values to an integer value that can be passed on to the BackColor (or other color­related) property.

Remember, a good programmer will always try use predefined constants if they are available instead of hard­coding numeric values. For example, key codes and mouse styles have the same names as they are defined as constants, but their numeric values are totally different. qt code if you are not using predefined constants so when writing code, it is imperative to use these constants instead of numeric values. If not, the code will not be portable. Good code should never use numeric values for these tasks.

WEND looping 4 times. WEND looping 5 times. WEND looped a total of: 5 times.  A repeat loop will always execute at least once, even if the UNTIL value is initially FALSE. " END The console should print the following: Hello World, REPEAT UNTIL looping 1 time. Hello World, REPEAT UNTIL looping 2 times. Hello World, REPEAT UNTIL looping 3 times. Hello World, REPEAT UNTIL looping 4 times. Hello World, REPEAT UNTIL looping 5 times. Goodbye, REPEAT UNTIL looped a total of: 5 times. Defining and Using Arrays in Gambas There are two kinds of arrays that can be used in Gambas.

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