Enjoy it !
Benoît Minisini
-g4mba5@gmail.com
Relative paths have a special meaning in Gambas. -They always refer to files inside your projects. +They always refer to files inside your projects.
There is no concept of current directory, and no keyword like -CHDIR to change it. +CHDIR to change it.
Be careful: you must use relative paths only for accessing project files, because absolute paths won't work anymore when -you make an executable. +you make an executable.
[GLOBAL] @@ -111,14 +111,14 @@ you make an executable. There is no global variables in Gambas!As a workaround, put them in your main module and declare them -as Public. +as Public.
If you do not have a main module in your project, but a main -form, then declare them as Static Public. +form, then declare them as Static Public.
To access these variables, you must use the name of the main module or form: MyMainModule.MyGlobalVariable or -MyMainForm.MyGlobalVariable. +MyMainForm.MyGlobalVariable.
[EMPTY] @@ -146,7 +146,7 @@ If Not MyString THEN ...Gambas applications are fully translatable, provided that you tell it which strings must be translated, and which one must not.
-To mark strings as translatable, just enclose them between braces:
+
To mark strings as translatable, just enclose them between braces:
Print ("Translate me")
Print "But do not translate me!"
@@ -247,7 +247,7 @@ disorientated :-).
You can embed any form into other forms with Gambas!
To do such a powerful thing, just instanciate the form by passing -a parent container as last argument of the contructor.
+a parent container as last argument of the constructor.For example:
Dim hForm As MyDialog @@ -323,7 +323,7 @@ of characters not to extract. then gives the number of characters from the end of the string not to extract. --The observer can cancel the event with Stop Event to prevent the object from effectively -raising it. +Mid$("Gambas", 2, -2) returns "amb" +
Mid$("Gambas", 2, -2) returns "amb"
[OBSERVER] @@ -344,21 +344,21 @@ Public Sub MyTextBox_KeyPress() Debug "Got it next" End
The observer can cancel the event with Stop Event to prevent the object from effectively +raising it.
[STRING]Gambas uses the UTF-8 charset to represent strings in memory. +
Gambas uses the UTF-8 charset to represent strings in memory.
But all standard string functions deal with ASCII only: -Left, Mid, Right, UCase... +Left, Mid, Right, UCase...
If you want to deal with UTF-8 strings, you have to use the methods of the -String static class, which have the same name as their standard counterparts. +String static class, which have the same name as their standard counterparts.
Print Len("bébé");; Left$("bébé", 3)
→ 6 bé
@@ -371,7 +371,7 @@ Print String.Len("bébé");; String.Left("bébé", 3)
Assignments
-Gambas implements the assignment shortcuts that the C/C++ programmers are used to.
+
Gambas implements the assignment shortcuts that the C/C++ programmers are used to.
MyVariable += 2
MyVariable *= 4
@@ -381,7 +381,7 @@ is an equivalent of
MyVariable = MyVariable * 4
MyVariable = MyVariable & "Great"
-And so on...
+
And so on...
[DEBUG]
@@ -390,14 +390,14 @@ MyVariable = MyVariable & "Great"
You can use the Debug instruction to print debugging messages to the console (namely the standard error output). It behaves exactly like the Print -instruction. +instruction.
These messages are prefixed with the class name, method name and line number of the Debug instruction. If you don't want that prefix, you can use the Error -instruction instead of Debug. +instruction instead of Debug.
The debugging messages are automatically removed when creating an executable -without debugging information. +without debugging information.
[TRY] @@ -405,10 +405,10 @@ without debugging information.Error management in Gambasis done with the following instructions: -Try, Error, Catch, and Finally. +Try, Error, Catch, and Finally.
Try tries to execute a statement without raising an error. The Error -keyword is used just after to know if the statement was executed correctly. +keyword is used just after to know if the statement was executed correctly.
Try MyFile = Open "/etc/password" For Write If Error Then Print "I cannot do what I want!"@@ -419,15 +419,15 @@ If Error Then Print "I cannot do what I want!"
Error management in Gambasis done with the following instructions: -Try, Error, Catch, and Finally. +Try, Error, Catch, and Finally.
Catch indicates the beginning of the error management part of a function or procedure. -It is put at the end of the function code. +It is put at the end of the function code.
The catch part is executed when an error is raised between the beginning of the function execution -and its end. +and its end.
-If an error is raised during the execution of the catch part, it is normally propagated. +
If an error is raised during the execution of the catch part, it is normally propagated.
Sub ProcessFile(FileName As String) ... @@ -447,14 +447,14 @@ End
Error management in Gambasis done with the following instructions: -Try, Error, Catch, and Finally. +Try, Error, Catch, and Finally.
Finally introduces the code executed at the end of the function, even if an error was -raised during its execution. +raised during its execution.
-The finally part is not mandatory. If there is a catch part in the function, the finally part must precede it. +
The finally part is not mandatory. If there is a catch part in the function, the finally part must precede it.
-If an error is raised during the execution of the finally part, it is normally propagated. +
If an error is raised during the execution of the finally part, it is normally propagated.
Sub ProcessFile(FileName As String) ... @@ -521,13 +521,13 @@ Nextin several predefined sizes ("small", "medium", "large",...) or absolute sizes (from 16x16 to 256x256). -
For example: +
For example:
Image1.Picture = Picture["icon:/32/warning"] Image2.Picture = Picture["icon:/small/error"]-
Warning: the gb.form component is required. +
Warning: the gb.form component is required.
[SETTINGS] @@ -535,12 +535,12 @@ Image2.Picture = Picture["icon:/small/error"]If you need to store the configuration of your program (like the geometry of your forms), -then you are a lucky guy. It's very easy and elegant in Gambas. :-) +then you are a lucky guy. It's very easy and elegant in Gambas. :-)
-To save the position of a form: +
To save the position of a form:
Settings.Write(TheForm)-
To recall it: +
To recall it:
Settings.Read(TheForm)To save any settings: @@ -552,7 +552,7 @@ And to read the settings back: These settings are stored in the ~/.config/gambas3/<MyApplication>.conf file, where <MyApplication> is the name of your project. -
Warning: The gb.settings component is required. +
Warning: The gb.settings component is required.
[EDITOR] @@ -569,12 +569,12 @@ where <MyApplication> is the name of your project.Let's type main then the TAB key. A static public Main -startup function is automatically inserted in your code. +startup function is automatically inserted in your code.
Let's type ds then the TAB key. A local string variable declaration is -automatically inserted, and you can type the variable name immediately. +automatically inserted, and you can type the variable name immediately.
-Code snippets are entirely configurable from the Preferences dialog of IDE's Tools menu. +
Code snippets are entirely configurable from the Preferences dialog of IDE's Tools menu.
[END]