The Ring programming language version 1.5.4 book - Part 184 of 185

Ring Documentation, Release 1.5.4
QPushButton Class
RingQt Classes Reference, 1594
QRadioButton Class
QRect Class
QRegularExpression Class
QRegularExpressionMatch Class
QRegularExpressionMatchIterator Class
QScreen Class
QScrollArea Class
QSerialPort Class
QSerialPortInfo Class
QSize Class
QSlider Class
QSpinBox Class
QSplashScreen Class
QSplitter Class
QSqlDatabase Class
QSqlDriver Class
QSqlDriverCreatorBase Class
QSqlError Class
QSqlField Class
QSqlIndex Class
QSqlQuery Class
QSqlRecord Class
QStatusBar Class
QString2 Class
QStringList Class
QStringRef Class
QSystemTrayIcon Class
Qt Class Convertor
What is new in Ring 1.4?, 87
Qt conﬁguration ﬁle
Code Generator, 789
QTableView Class
QTableWidget Class
QTableWidgetItem Class
QTabWidget Class
QTcpServer Class
QTcpSocket Class
QTest Class
QTextBlock Class
QTextBrowser Class
QTextCharFormat Class
QTextCodec Class
QTextCursor Class
QTextDocument Class
QTextEdit Class
QThread Class
QThreadPool Class
QTime Class
QTimer Class
QToolBar Class
QToolButton Class
QTreeView Class
QTreeWidget Class
QTreeWidgetItem Class
Queue Class
Stdlib Classes, 327
Index 1805

Quotes about Ring
Applications developed in little hours, 1
QUrl Class
QUuid Class
QVariant Class
QVBoxLayout Class
QVideoWidget and QMediaPlayer
Desktop and Mobile Development, 602
QVideoWidget Class
QVideoWidgetControl Class
QWebView Class
QWidget Class
QWindow Class
QXmlStreamAttribute Class
QXmlStreamAttributes Class
QXmlStreamEntityDeclaration Class
QXmlStreamEntityResolver Class
QXmlStreamNamespaceDeclaration Class
QXmlStreamNotationDeclaration Class
QXmlStreamReader Class
QXmlStreamWriter Class
Raise()
Eval() and Debugging, 238
RandBytes()
Security and Internet Functions, 268
Random Image
Web Development (CGI Library), 388
Random()
Mathematical Functions, 217
Read File using Read()
Files, 221
readline()
Stdlib Functions, 317
Real Natual Code
Natural Language Programming, 357
Recursion
Functions - First Style, 179
Functions - Second Style, 183
Functions - Third Style, 187
Reference
Compiler Errors, 1774
Environment Errors, 1776
Introduction, 1771
Language Functions, 1773
Language Grammar, 1776
Language Keywords, 1772
Runtime Errors, 1775
Virtual Machine Instructions, 1778
Reﬂection and Meta-programming
addattribute(), 299
addmethod(), 299
attributes(), 296
cfunctions(), 289
classes(), 293
classname(), 295
functions(), 289
getattribute(), 301
globals(), 288
Introduction, 287
isattribute(), 297
iscfunction(), 291
isclass(), 293
isfunction(), 291
isglobal(), 290
islocal(), 290
ismethod(), 298
isobject(), 296
ispackage(), 292
ispackagesclass(), 295
isprivateattribute(), 297
isprivatemethod(), 298
locals(), 288
mergemethods(), 303
methods(), 296
objectid(), 295
packagename(), 304
packages(), 292
packagesclasses(), 294
setattribute(), 302
Register New Functions
Code Generator, 783
Regular Expressions
Relational Operators
Operators, 156
Remove()
Files, 222
Rename()
Files, 222
Resources
Index 1806

Contact the Autor, 1785
Introduction, 1784
Ring Group, 1785
Ring Language Website, 1785
Restore Image From The Database
MySQL Functions, 259
Return object by reference
Declarative Programming, 346
Return Self by Reference
Return Value
Extension, 770
Reverse()
Lists, 192
Rewind()
Files, 224
Right()
Strings, 198
RING API - list Functions
Extension, 772
RING API - String Functions
Extension, 774
Ring CGI Hello World Program
Ring Group
Resources, 1785
Ring Language Website
Resources, 1785
Ring mode for Emacs Editor
Ring Notepad
Introduction, 135
Ring Notepad - Creating and running your first con-
sole application, 136
Ring Notepad - Creating and running your first game,
141
Ring Notepad - Creating and running your first GUI
application, 139
Ring Notepad - Creating and running your first Web
application, 140
Ring Notepad - Main Window, 136
The Browser Menu, 146
The Edit Menu, 143
The File Menu, 143
The Help Menu, 147
The Main File in the Project, 142
The Program Menu, 146
The Tools Menu, 147
The View Menu, 144
Ring Notepad - Creating and running your first console
application
Ring Notepad, 136
Ring Notepad - Creating and running your first game
Ring Notepad, 141
Ring Notepad - Creating and running your first GUI ap-
plication
Ring Notepad, 139
Ring Notepad - Creating and running your first Web ap-
plication
Ring Notepad, 140
Ring Notepad - Main Window
Ring Notepad, 136
Ring State
Embedding Ring Language in C/C++ Programs, 777
Ring State Functions
Ring State Variables
Ring VM - Tracing Functions
ring_ext.c
Extension, 767
ring_ext.h
Extension, 767
RingAllegro Functions Reference
Introduction, 809
RingCodeHighlighter Class
RingFreeGLUT Extension
RingFreeGLUT Functions Reference
Introduction, 844
RingLibCurl
Facebook Login, 422
Get Request, 422
Get Stock Data From Yahoo, 424
Introduction, 421
Post Request, 422
Save output to string, 423
RingLibCurl Functions Reference
Introduction, 799
RingLibSDL
Close Window Event, 445
Create Window, 442
Display Image, 442
Display PNG Images, 443
Display Transparent Images, 444
Draw Rectangle, 443
Introduction, 441
Mouse Events, 446
Play Sound, 447
Switch Between Two Images, 442
Use TTF Fonts, 444
Index 1807

RingLibSDL Functions Reference
Introduction, 828
RingLibZip Functions Reference
Introduction, 808
RingOpenGL (OpenGL 1.1) Functions Reference
Introduction, 853
Introduction, 878
Introduction, 904
Introduction, 933
Introduction, 963
Introduction, 994
Introduction, 1028
Introduction, 1070
Introduction, 1115
Introduction, 1161
Introduction, 1208
Introduction, 1255
Introduction, 1302
Introduction, 1349
Introduction, 1396
Introduction, 1443
Introduction, 1490
Introduction, 1537
RingOpenGL Extension
RingQt Classes and their Qt Documentation
RingQt Classes Reference
CodeEditor Class, 1704
Introduction, 1585
QAbstractButton Class, 1635
QAbstractItemView Class, 1621
QAbstractScrollArea Class, 1620
QAbstractSlider Class, 1627
QAbstractSocket Class, 1656
QAbstractSpinBox Class, 1630
QAction Class, 1639
QAllEvents Class, 1669
QApp Class, 1586
QAxBase Class, 1723
QAxObject Class, 1723
QBitmap Class, 1594
QBluetoothAddress Class, 1728
QBluetoothDeviceDiscoveryAgent Class, 1728
QBluetoothDeviceInfo Class, 1729
QBluetoothHostInfo Class, 1729
QBluetoothLocalDevice Class, 1730
QBoxLayout Class, 1713
QBrush Class, 1653
QBuffer Class, 1728
QButtonGroup Class, 1636
QByteArray Class, 1653
QCamera Class, 1707
QCameraImageCapture Class, 1708
QCameraViewﬁnder Class, 1707
QCheckBox Class, 1634
QColor Class, 1647
QColorDialog Class, 1665
QComboBox Class, 1610
QCompleter Class, 1717
QCompleter2 Class, 1718
QCompleter3 Class, 1718
QCursor Class, 1721
QDate Class, 1680
QDateEdit Class, 1629
QDateTime Class, 1730
QDateTimeEdit Class, 1629
QDesktopServices Class, 1586
QDesktopWidget Class, 1673
QDial Class, 1631
QDialog Class, 1663
QDir Class, 1605
QDirModel Class, 1662
QDockWidget Class, 1616
QEvent Class, 1640
QFileDialog Class, 1642
QFileInfo Class, 1660
QFileSystemModel Class, 1605
QFont Class, 1651
QFontDialog Class, 1663
QFontMetrics Class, 1711
QFrame Class, 1619
QFrame2 Class, 1620
QFrame3 Class, 1620
QGradient Class, 1714
QGraphicsVideoItem Class, 1707
QGridLayout Class, 1704
QGuiApplication Class, 1736
QHBoxLayout Class, 1599
QHeaderView Class, 1709
QHostAddress Class, 1660
Index 1808

QHostInfo Class, 1660
QIcon Class, 1596
QImage Class, 1690
QInputDialog Class, 1668
QIODevice Class, 1655
QJsonArray Class, 1699
QJsonDocument Class, 1700
QJsonObject Class, 1700
QJsonParseError Class, 1701
QJsonValue Class, 1701
QKeySequence Class, 1667
QLabel Class, 1593
QLayout Class, 1713
QLCDNumber Class, 1667
QLinearGradient Class, 1714
QLineEdit Class, 1596
QListView Class, 1722
QListWidget Class, 1601
QListWidgetItem Class, 1678
QMainWindow Class, 1614
QMdiArea Class, 1720
QMdiSubWindow Class, 1721
QMediaObject Class, 1709
QMediaPlayer Class, 1636
QMediaPlaylist Class, 1637
QMenu Class, 1612
QMenuBar Class, 1612
QMessageBox Class, 1641
QMutex Class, 1727
QMutexLocker Class, 1728
QNetworkAccessManager Class, 1687
QNetworkProxy Class, 1657
QNetworkReply Class, 1688
QNetworkRequest Class, 1687
QObject Class, 1586
QPainter Class, 1643
QPainter2 Class, 1646
QPainterPath Class, 1689
QPen Class, 1646
QPicture Class, 1646
QPixmap Class, 1594
QPixmap2 Class, 1596
QPlainTextEdit Class, 1701
QPoint Class, 1715
QPointF Class, 1715
QPrinter Class, 1649
QProcess Class, 1718
QProgressBar Class, 1626
QPushButton Class, 1594
QRadioButton Class, 1635
QRect Class, 1673
QRegularExpression Class, 1697
QRegularExpressionMatch Class, 1698
QRegularExpressionMatchIterator Class, 1698
QScreen Class, 1731
QScrollArea Class, 1716
QSerialPort Class, 1724
QSerialPortInfo Class, 1725
QSize Class, 1596
QSlider Class, 1628
QSpinBox Class, 1627
QSplashScreen Class, 1712
QSplitter Class, 1716
QSqlDatabase Class, 1681
QSqlDriver Class, 1682
QSqlDriverCreatorBase Class, 1685
QSqlError Class, 1683
QSqlField Class, 1685
QSqlIndex Class, 1684
QSqlQuery Class, 1682
QSqlRecord Class, 1684
QStatusBar Class, 1616
QString2 Class, 1718
QStringList Class, 1666
QStringRef Class, 1726
QSystemTrayIcon Class, 1679
QTableView Class, 1622
QTableWidget Class, 1624
QTableWidgetItem Class, 1618
QTabWidget Class, 1617
QTcpServer Class, 1659
QTcpSocket Class, 1658
QTest Class, 1586
QTextBlock Class, 1677
QTextBrowser Class, 1738
QTextCharFormat Class, 1705
QTextCodec Class, 1681
QTextCursor Class, 1663
QTextDocument Class, 1675
QTextEdit Class, 1599
QThread Class, 1696
QThreadPool Class, 1697
QTime Class, 1678
QTimer Class, 1642
QToolBar Class, 1613
QToolButton Class, 1723
QTreeView Class, 1603
QTreeWidget Class, 1606
QTreeWidgetItem Class, 1609
QUrl Class, 1633
QUuid Class, 1723
QVariant Class, 1685
QVBoxLayout Class, 1598
QVideoWidget Class, 1638
QVideoWidgetControl Class, 1707
QWebView Class, 1632
QWidget Class, 1587
QWindow Class, 1732
Index 1809

QXmlStreamAttribute Class, 1696
QXmlStreamAttributes Class, 1695
QXmlStreamEntityDeclaration Class, 1695
QXmlStreamEntityResolver Class, 1695
QXmlStreamNamespaceDeclaration Class, 1695
QXmlStreamNotationDeclaration Class, 1694
QXmlStreamReader Class, 1692
QXmlStreamWriter Class, 1693
RingCodeHighlighter Class, 1691
RingREPL
RingSQLite
ringvm_callfunc()
Low Level Functions, 752
RingVM_CallList()
RingVM_CFunctionsList()
RingVM_ClassesList()
ringvm_evalinscope()
RingVM_FilesList()
RingVM_FunctionsList()
ringvm_hideerrorMsg()
RingVM_MemoryList()
RingVM_PackagesList()
ringvm_passerror()
ringvm_scopescount()
ringvm_settrace()
ringvm_tracedata()
ringvm_traceevent()
ringvm_tracefunc()
RingZip
Create Zip File, 426
Extract Zip File, 426
Introduction, 425
Print files in Zip file, 426
Using RingZip Classes, 426
Zip Class Reference, 428
ZipEntry Class Reference, 428
RingZip Library
Rotate Text
Rules
The Type Hints Library, 721
Run the program
Getting Started - First Style, 130
Getting Started - Second Style, 132
Getting Started - Third Style, 134
Running Forms
Form Designer, 685
Runtime Errors
Reference, 1775
Samples
How to contribute?, 128
Samples in this book
Samples Source (Authors)
Using RingOpenGL and RingFreeGLUT for 3D
Graphics, 502
Save and Restore Images
ODBC Functions, 251
Save Image Inside the Database
Save output to string
RingLibCurl, 423
Scaling and Rotating Images
Graphics and Game Programming, 437
Scope Rules
Accessing the class attributes from braces inside
class methods, 697
Conflict between Class Attributes and Local Vari-
ables, 694
Conflict between Global Variables and Class At-
tributes, 693
Conflict between self inside braces and self in the
class region, 700
Creating a Class for each Window in GUI applica-
tions, 699
Defining Variables and Variables Access, 691
How Ring find the Variable?, 692
Introduction, 690
Summary of Scope Rules, 704
The Self Object, 692
Three Scopes, 691
Using Braces to access objects inside Class Methods,
695
Using braces to escape from the current object scope,
703
Using Object.Attribute, 692
Scope Rules for Functions and Methods
Calling a function sharing the name with a method in
the current class, 708
Index 1810

Example about Sharing Names between Functions
and Methods, 706
How Ring find a functions and methods?, 706
Introduction, 705
ScriptFunctions Class
Search
Lists, 191
Search of global names while defining the class attributes
Frequently Asked Questions, 1752
Security and Internet Functions
Decrypt(), 268
Download(), 269
Encrypt(), 267
Example, 268
File Hash, 268
Introduction, 264
MD5(), 265
RandBytes(), 268
SendEmail(), 269
SHA1(), 266
SHA224(), 267
SHA256(), 266
SHA384(), 267
SHA512(), 266
Security Class
Stdlib Classes, 343
Send Parameters
SendEmail()
Serial Execution of Programs
Embedding Ring in Ring, 765
Set List Item
Lists, 190
setattribute()
Reflection and Meta-programming, 302
Setter and Getter
Object Oriented Programming, 274
SHA1()
SHA224()
SHA256()
SHA384()
SHA512()
Shared Libraries
Extension, 775
Short-circuit evaluation
Control Structures - First Style, 163
Shutdown() Function
System Functions, 236
sign()
Simple
Language Design, 27
Simple Client and Server Example
Sin() Implementation
Extension, 771
Single: Desktop and Mobile Development
Introduction, 569
sleep()
Smart Garbage Collector
Language Design, 35
Sort()
Lists, 191
Sort() and List of Objects
Object Oriented Programming, 279
Sound Class
Game Engine for 2D Games, 453
Source Code File Sections
Program Structure, 188
space()
Special thanks to contributors
split()
splitmany()
Sprite Automatic Movement
Sprite Class
Sprite Keypress Event
Sprite Mouse Event
Sprite State Event
SQLite
Introduction, 261
sqlite_close(), 262
sqlite_execute(), 262
sqlite_init(), 262
sqlite_open(), 262
SQLite Class
Stdlib Classes, 342
sqlite_close()
SQLite, 262
sqlite_execute()
Index 1811

SQLite, 262
sqlite_init()
SQLite, 262
sqlite_open()
SQLite, 262
Squares Puzzle Game
Stack Class
Stdlib Classes, 327
Stars Fighter Game
startswith()
StdBase Class
Stdlib Classes, 322
Stdlib Classes
Conversion Class, 339
DataType Class, 338
DateTime Class, 333
Debug Class, 337
File Class, 335
HashTable Class, 328
Internet Class, 344
Introduction, 321
List Class, 325
Math Class, 330
MySQL Class, 341
ODBC Class, 340
Queue Class, 327
Security Class, 343
SQLite Class, 342
Stack Class, 327
StdBase Class, 322
String Class, 323
System Class, 336
Tree Class, 329
Stdlib Functions
apppath(), 306
binarydigits(), 315
capitalized(), 309
changestring(), 318
dayofweek(), 316
direxists(), 318
endswith(), 312
EpochTime(), 320
evenorodd(), 314
factorial(), 310
factors(), 314
fibonacci(), 311
file2list(), 312
filter(), 308
FSize(), 319
gcd(), 313
getnumber(), 306
getstring(), 306
Introduction, 304
isleapyear(), 315
ismainsourcefile(), 318
isprime(), 311
isspecial(), 309
isvowel(), 310
JustFileName(), 307
JustFilePath(), 306
lcm(), 313
linecount(), 310
list2file(), 311
ListAllFiles() Function, 320
makedir(), 319
map(), 308
matrixmulti(), 315
matrixtrans(), 316
newlist(), 309
palindrome(), 315
permutation(), 316
print(), 305
Print2Str() Function, 305
prodlist(), 314
puts(), 305
readline(), 317
sign(), 311
sleep(), 318
split(), 308
splitmany(), 308
startswith(), 312
substring(), 317
sumlist(), 313
SystemCmd() Function, 320
times(), 307
TrimAll(), 319
TrimLeft(), 319
TrimRight(), 320
value(), 307
StdLib functions and classes written in Ring
Step Option
Str2Hex()
Data Type, 214
str2list() and list2str()
Strings, 201
strcmp()
Strings, 201
String Class
Stdlib Classes, 323
String Literals
Strings, 197
String()
Data Type, 212
Index 1812

Strings
Access String Letters, 197
Convert Letters Case, 197
Copy(), 199
Find SubString, 200
Get Number of Characters from position, 200
Get String Length, 197
Get Substring from position to end, 200
Introduction, 196
Left(), 198
Lines(), 199
Right(), 198
str2list() and list2str(), 201
strcmp(), 201
String Literals, 197
Substr(), 199
Transform Substring To Another Substring, 200
Trim(), 199
StyleFunctions Class
Substr()
Strings, 199
substring()
sumlist()
Summary of Scope Rules
Scope Rules, 704
Super Man 2016 Game
Swap Items
Lists, 196
Switch Between Two Images
RingLibSDL, 442
Switch Statement
Control Structures - Second Style, 166
Control Structures - Third Style, 169
Syntax Flexibility
Change Language Keywords, 710
Change Language Operators, 711
Introduction, 709
Load Syntax Files, 711
Using ’case’ as ’on’ in switch statements, 717
Using ’def’ as ’func’ in functions/methods deﬁni-
tion, 717
Using ’end’ keyword after Pack-
ages/Classes/Functions, 718
Using ’endpackage’/’endclass’/’endfunc’ keywords
after Packages/Classes/Functions, 718
Using ’put’ and ’get’ as ’see’ and ’give’, 717
Using () around the function parameters, 711
in the start of the variable name, 714
Using braces { } in Packages/Classes/Functions, 718
Using braces to start and end different control struc-
tures, 716
Using Semi-colon after and between statements, 713
Using the ’else’ keyword as ’other’ in switch state-
ment, 714
Using the ’elseif’ keyword as ’but’ in if statement,
714
Using the ’end’ keyword in different control struc-
tures, 715
SysGet() Function
System Class
Stdlib Classes, 336
System Functions
ChDir() Function, 235
CurrentDir() Function, 235
Example, 232
ExeFileName() Function, 235
ExeFolder() Function, 235
Get Active Source File Name, 234
Get Command Line Arguments, 233
Introduction, 229
IsAndroid() Function, 232
IsFreeBSD() Function, 232
IsLinux() Function, 232
IsMacOSX() Function, 231
IsMSDOS() Function, 231
IsUnix() Function, 231
IsWindows() Function, 231
IsWindows64() Function, 231
PrevFileName() Function, 234
Shutdown() Function, 236
SysGet() Function, 231
System() Function, 230
Version() Function, 235
Windowsnl() Function, 233
System() Function
SystemCmd() Function
Tempﬁle()
Files, 224
Templates
Tempname()
Files, 224
Testing
Text Class
The Browser Menu
Ring Notepad, 146
Index 1813

The Camera
Graphics, 512
The Cards Game
Demo Programs, 660
The Designer Windows
Form Designer, 684
The Difference between Qt and RingQt
The documentation says functional programming is sup-
ported, but then this happens?
Frequently Asked Questions, 1744
The Edit Menu
Ring Notepad, 143
The File Menu
Ring Notepad, 143
The First GUI Application
The First Triangle
Graphics, 505
The First Window using RingFreeGLUT
Graphics, 503
The Help Menu
Ring Notepad, 147
The Main File in the Project
Ring Notepad, 142
The Natural Library
The Program Menu
Ring Notepad, 146
The Properties
Form Designer, 684
The Self Object
Scope Rules, 692
The Tools Menu
Ring Notepad, 147
The Trace Library and the Interactive Debugger
BreakPoint, 762
Disable BreakPoints, 762
Execute Program Line by Line, 761
Interactive Debugger, 761
Introduction, 759
Loading the Trace library, 760
Pass Error, 761
Trace All Events, 760
Trace control ﬂow between functions, 760
Using the Interactive Debugger, 762
The Type Hints Library
Example, 720
Introduction to the Type Hints Library, 719
Rules, 721
User Types, 720
Using Types inside Code, 721
Why Type Hints?, 720
The View Menu
Ring Notepad, 144
Threads
Threads Support
Code Generator, 787
Three Scopes
Scope Rules, 691
TicTacToe 3D Game
Using RingOpenGL and RingAllegro for 3D Graph-
ics, 559
TicTacToe Game
Time()
Date and Time, 203
TimeList()
Date and Time, 204
times()
Trace All Events
The Trace Library and the Interactive Debugger, 760
Trace control ﬂow between functions
The Trace Library and the Interactive Debugger, 760
Trace Library and Interactive Debugger
Transaction Example
Transactions and Using Commit and Rollback
ODBC Functions, 250
Transform Substring To Another Substring
Strings, 200
Transparent Image
Transparent Implementation
Language Design, 33
Tree Class
Stdlib Classes, 329
Triangle Rotation
Graphics, 508
Trim()
Strings, 199
TrimAll()
TrimLeft()
TrimRight()
TrueType Fonts
Try/Carch/Done
Index 1814

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The Ring programming language version 1.5.4 book - Part 184 of 185