The Ring programming language version 1.5.2 book - Part 180 of 181

Ring Documentation, Release 1.5.2
QSlider Class
RingQt Classes Reference, 1598
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?, 80
Qt conﬁguration ﬁle
Code Generator, 760
QTableView Class
QTableWidget Class
QTableWidgetItem Class
QTabWidget Class
QTcpServer Class
QTcpSocket Class
QTest Class
QTextBlock 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, 319
Quotes about Ring
Applications developed in little hours, 1
QUrl Class
QUuid Class
QVariant Class
QVBoxLayout Class
QVideoWidget and QMediaPlayer
Desktop and Mobile Development, 573
QVideoWidget Class
QVideoWidgetControl Class
QWebView Class
QWidget Class
QXmlStreamAttribute Class
QXmlStreamAttributes Class
Index 1765

QXmlStreamEntityDeclaration Class
QXmlStreamEntityResolver Class
QXmlStreamNamespaceDeclaration Class
QXmlStreamNotationDeclaration Class
QXmlStreamReader Class
QXmlStreamWriter Class
Raise()
Eval() and Debugging, 230
RandBytes()
Security and Internet Functions, 260
Random Image
Web Development (CGI Library), 380
Random()
Mathematical Functions, 209
Read File using Read()
Files, 213
readline()
Stdlib Functions, 309
Real Natual Code
Natural Language Programming, 349
Recursion
Functions - First Style, 171
Functions - Second Style, 175
Functions - Third Style, 179
Reference
Compiler Errors, 1734
Environment Errors, 1736
Introduction, 1731
Language Functions, 1733
Language Grammar, 1736
Language Keywords, 1732
Runtime Errors, 1735
Virtual Machine Instructions, 1738
Reﬂection and Meta-programming
addattribute(), 291
addmethod(), 291
attributes(), 288
cfunctions(), 281
classes(), 285
classname(), 287
functions(), 281
getattribute(), 293
globals(), 280
Introduction, 279
isattribute(), 289
iscfunction(), 283
isclass(), 285
isfunction(), 283
isglobal(), 282
islocal(), 282
ismethod(), 290
isobject(), 288
ispackage(), 284
ispackagesclass(), 287
isprivateattribute(), 289
isprivatemethod(), 290
locals(), 280
mergemethods(), 295
methods(), 288
objectid(), 287
packagename(), 296
packages(), 284
packagesclasses(), 286
setattribute(), 294
Register New Functions
Code Generator, 754
Regular Expressions
Relational Operators
Operators, 148
Remove()
Files, 214
Rename()
Files, 214
Resources
Contact the Autor, 1745
Introduction, 1744
Ring Group, 1745
Ring Language Website, 1745
Restore Image From The Database
MySQL Functions, 251
Return object by reference
Declarative Programming, 338
Return Self by Reference
Return Value
Extension, 741
Reverse()
Lists, 184
Rewind()
Files, 216
Right()
Strings, 190
RING API - list Functions
Extension, 743
RING API - String Functions
Extension, 745
Ring CGI Hello World Program
Index 1766

Ring Group
Resources, 1745
Ring Language Website
Resources, 1745
Ring mode for Emacs Editor
Ring Notepad
Introduction, 128
Ring Notepad - Creating and running your first con-
sole application, 129
Ring Notepad - Creating and running your first game,
134
Ring Notepad - Creating and running your first GUI
application, 132
Ring Notepad - Creating and running your first Web
application, 133
Ring Notepad - Main Window, 129
The Browser Menu, 138
The Edit Menu, 136
The File Menu, 136
The Help Menu, 139
The Main File in the Project, 135
The Program Menu, 138
The Tools Menu, 139
The View Menu, 137
Ring Notepad - Creating and running your first console
application
Ring Notepad, 129
Ring Notepad - Creating and running your first game
Ring Notepad, 134
Ring Notepad - Creating and running your first GUI ap-
plication
Ring Notepad, 132
Ring Notepad - Creating and running your first Web ap-
plication
Ring Notepad, 133
Ring Notepad - Main Window
Ring Notepad, 129
Ring State
Embedding Ring Language in C/C++ Programs, 748
Ring State Functions
Ring State Variables
Ring VM - Tracing Functions
ring_ext.c
Extension, 738
ring_ext.h
Extension, 738
RingAllegro Functions Reference
Introduction, 780
RingCodeHighlighter Class
RingFreeGLUT Extension
RingFreeGLUT Functions Reference
Introduction, 815
RingLibCurl
Facebook Login, 414
Get Request, 414
Get Stock Data From Yahoo, 416
Introduction, 413
Post Request, 414
Save output to string, 415
RingLibCurl Functions Reference
Introduction, 770
RingLibSDL
Close Window Event, 437
Create Window, 434
Display Image, 434
Display PNG Images, 435
Display Transparent Images, 436
Draw Rectangle, 435
Introduction, 433
Mouse Events, 438
Play Sound, 439
Switch Between Two Images, 434
Use TTF Fonts, 436
RingLibSDL Functions Reference
Introduction, 799
RingLibZip Functions Reference
Introduction, 779
RingOpenGL (OpenGL 1.1) Functions Reference
Introduction, 824
Introduction, 849
Introduction, 875
Introduction, 904
Introduction, 934
Introduction, 965
Introduction, 999
Introduction, 1041
Introduction, 1086
Introduction, 1132
Introduction, 1179
Index 1767

Introduction, 1226
Introduction, 1273
Introduction, 1320
Introduction, 1367
Introduction, 1414
Introduction, 1461
Introduction, 1508
RingOpenGL Extension
RingQt Classes and their Qt Documentation
RingQt Classes Reference
CodeEditor Class, 1673
Introduction, 1556
QAbstractButton Class, 1604
QAbstractItemView Class, 1590
QAbstractScrollArea Class, 1590
QAbstractSlider Class, 1597
QAbstractSocket Class, 1626
QAbstractSpinBox Class, 1600
QAction Class, 1608
QAllEvents Class, 1639
QApp Class, 1557
QAxBase Class, 1692
QAxObject Class, 1692
QBitmap Class, 1565
QBluetoothAddress Class, 1697
QBluetoothDeviceDiscoveryAgent Class, 1698
QBluetoothDeviceInfo Class, 1698
QBluetoothHostInfo Class, 1699
QBluetoothLocalDevice Class, 1699
QBoxLayout Class, 1682
QBrush Class, 1622
QBuffer Class, 1697
QButtonGroup Class, 1606
QByteArray Class, 1623
QCamera Class, 1677
QCameraImageCapture Class, 1678
QCameraViewﬁnder Class, 1676
QCheckBox Class, 1604
QColor Class, 1617
QColorDialog Class, 1635
QComboBox Class, 1580
QCompleter Class, 1686
QCompleter2 Class, 1687
QCompleter3 Class, 1687
QCursor Class, 1691
QDate Class, 1649
QDateEdit Class, 1599
QDateTimeEdit Class, 1599
QDesktopServices Class, 1557
QDesktopWidget Class, 1642
QDial Class, 1601
QDialog Class, 1633
QDir Class, 1575
QDirModel Class, 1631
QDockWidget Class, 1586
QEvent Class, 1610
QFileDialog Class, 1612
QFileInfo Class, 1630
QFileSystemModel Class, 1575
QFont Class, 1620
QFontDialog Class, 1632
QFontMetrics Class, 1681
QFrame Class, 1589
QFrame2 Class, 1589
QFrame3 Class, 1590
QGradient Class, 1684
QGraphicsVideoItem Class, 1676
QGridLayout Class, 1674
QHBoxLayout Class, 1568
QHeaderView Class, 1678
QHostAddress Class, 1629
QHostInfo Class, 1630
QIcon Class, 1566
QImage Class, 1659
QInputDialog Class, 1637
QIODevice Class, 1625
QJsonArray Class, 1668
QJsonDocument Class, 1669
QJsonObject Class, 1670
QJsonParseError Class, 1670
QJsonValue Class, 1670
QKeySequence Class, 1637
QLabel Class, 1564
QLayout Class, 1683
QLCDNumber Class, 1637
QLinearGradient Class, 1684
QLineEdit Class, 1566
QListView Class, 1691
QListWidget Class, 1571
QListWidgetItem Class, 1648
QMainWindow Class, 1584
QMdiArea Class, 1689
QMdiSubWindow Class, 1690
QMediaObject Class, 1678
QMediaPlayer Class, 1606
QMediaPlaylist Class, 1607
QMenu Class, 1582
QMenuBar Class, 1582
QMessageBox Class, 1610
Index 1768

QMutex Class, 1697
QMutexLocker Class, 1697
QNetworkAccessManager Class, 1657
QNetworkProxy Class, 1627
QNetworkReply Class, 1658
QNetworkRequest Class, 1656
QObject Class, 1557
QPainter Class, 1613
QPainter2 Class, 1615
QPainterPath Class, 1658
QPen Class, 1616
QPicture Class, 1616
QPixmap Class, 1565
QPixmap2 Class, 1566
QPlainTextEdit Class, 1671
QPoint Class, 1685
QPointF Class, 1684
QPrinter Class, 1619
QProcess Class, 1688
QProgressBar Class, 1596
QPushButton Class, 1565
QRadioButton Class, 1605
QRect Class, 1643
QRegularExpression Class, 1667
QRegularExpressionMatch Class, 1667
QRegularExpressionMatchIterator Class, 1668
QScrollArea Class, 1685
QSerialPort Class, 1693
QSerialPortInfo Class, 1695
QSize Class, 1566
QSlider Class, 1598
QSpinBox Class, 1596
QSplashScreen Class, 1682
QSplitter Class, 1685
QSqlDatabase Class, 1650
QSqlDriver Class, 1651
QSqlDriverCreatorBase Class, 1655
QSqlError Class, 1653
QSqlField Class, 1654
QSqlIndex Class, 1653
QSqlQuery Class, 1652
QSqlRecord Class, 1653
QStatusBar Class, 1585
QString2 Class, 1688
QStringList Class, 1635
QStringRef Class, 1695
QSystemTrayIcon Class, 1649
QTableView Class, 1592
QTableWidget Class, 1593
QTableWidgetItem Class, 1588
QTabWidget Class, 1586
QTcpServer Class, 1628
QTcpSocket Class, 1628
QTest Class, 1557
QTextBlock Class, 1646
QTextCharFormat Class, 1674
QTextCodec Class, 1650
QTextCursor Class, 1633
QTextDocument Class, 1644
QTextEdit Class, 1569
QThread Class, 1665
QThreadPool Class, 1666
QTime Class, 1647
QTimer Class, 1611
QToolBar Class, 1583
QToolButton Class, 1693
QTreeView Class, 1573
QTreeWidget Class, 1576
QTreeWidgetItem Class, 1578
QUrl Class, 1603
QUuid Class, 1693
QVariant Class, 1655
QVBoxLayout Class, 1568
QVideoWidget Class, 1607
QVideoWidgetControl Class, 1677
QWebView Class, 1602
QWidget Class, 1558
QXmlStreamAttribute Class, 1665
QXmlStreamAttributes Class, 1665
QXmlStreamEntityDeclaration Class, 1664
QXmlStreamEntityResolver Class, 1664
QXmlStreamNamespaceDeclaration Class, 1664
QXmlStreamNotationDeclaration Class, 1664
QXmlStreamReader Class, 1661
QXmlStreamWriter Class, 1663
RingCodeHighlighter Class, 1661
RingREPL
RingSQLite
ringvm_callfunc()
Low Level Functions, 723
RingVM_CallList()
RingVM_CFunctionsList()
RingVM_ClassesList()
ringvm_evalinscope()
RingVM_FilesList()
RingVM_FunctionsList()
ringvm_hideerrorMsg()
RingVM_MemoryList()
Index 1769

RingVM_PackagesList()
ringvm_passerror()
ringvm_scopescount()
ringvm_settrace()
ringvm_tracedata()
ringvm_traceevent()
ringvm_tracefunc()
RingZip
Create Zip File, 418
Extract Zip File, 418
Introduction, 417
Print files in Zip file, 418
Using RingZip Classes, 418
Zip Class Reference, 420
ZipEntry Class Reference, 420
RingZip Library
Rotate Text
Rules
The Type Hints Library, 692
Run the program
Getting Started - First Style, 123
Getting Started - Second Style, 125
Getting Started - Third Style, 127
Running Forms
Form Designer, 656
Runtime Errors
Reference, 1735
Samples
How to contribute?, 121
Samples in this book
Samples Source (Authors)
Using RingOpenGL and RingFreeGLUT for 3D
Graphics, 494
Save and Restore Images
ODBC Functions, 243
Save Image Inside the Database
Save output to string
RingLibCurl, 415
Scaling and Rotating Images
Graphics and Game Programming, 429
Scope Rules
Accessing the class attributes from braces inside
class methods, 668
Conflict between Class Attributes and Local Vari-
ables, 665
Conflict between Global Variables and Class At-
tributes, 664
Conflict between self inside braces and self in the
class region, 671
Creating a Class for each Window in GUI applica-
tions, 670
Defining Variables and Variables Access, 662
How Ring find the Variable?, 663
Introduction, 661
Summary of Scope Rules, 675
The Self Object, 663
Three Scopes, 662
Using Braces to access objects inside Class Methods,
666
Using braces to escape from the current object scope,
674
Using Object.Attribute, 663
Scope Rules for Functions and Methods
Calling a function sharing the name with a method in
the current class, 679
Example about Sharing Names between Functions
and Methods, 677
How Ring find a functions and methods?, 677
Introduction, 676
ScriptFunctions Class
Search
Lists, 183
Search of global names while defining the class attributes
Frequently Asked Questions, 1712
Security and Internet Functions
Decrypt(), 260
Download(), 261
Encrypt(), 259
Example, 260
File Hash, 260
Introduction, 256
MD5(), 257
RandBytes(), 260
SendEmail(), 261
SHA1(), 258
SHA224(), 259
SHA256(), 258
SHA384(), 259
SHA512(), 258
Security Class
Stdlib Classes, 335
Send Parameters
Index 1770

SendEmail()
Serial Execution of Programs
Embedding Ring in Ring, 736
Set List Item
Lists, 182
setattribute()
Reﬂection and Meta-programming, 294
Setter and Getter
Object Oriented Programming, 266
SHA1()
SHA224()
SHA256()
SHA384()
SHA512()
Shared Libraries
Extension, 746
Short-circuit evaluation
Control Structures - First Style, 155
Shutdown() Function
System Functions, 228
sign()
Simple
Language Design, 24
Simple Client and Server Example
Sin() Implementation
Extension, 742
Single: Desktop and Mobile Development
Introduction, 541
sleep()
Smart Garbage Collector
Language Design, 32
Sort()
Lists, 183
Sort() and List of Objects
Object Oriented Programming, 271
Sound Class
Game Engine for 2D Games, 445
Source Code File Sections
Program Structure, 180
space()
Special thanks to contributors
split()
splitmany()
Sprite Automatic Movement
Sprite Class
Sprite Keypress Event
Sprite Mouse Event
Sprite State Event
SQLite
Introduction, 253
sqlite_close(), 254
sqlite_execute(), 254
sqlite_init(), 254
sqlite_open(), 254
SQLite Class
Stdlib Classes, 334
sqlite_close()
SQLite, 254
sqlite_execute()
SQLite, 254
sqlite_init()
SQLite, 254
sqlite_open()
SQLite, 254
Squares Puzzle Game
Stack Class
Stdlib Classes, 319
Stars Fighter Game
startswith()
StdBase Class
Stdlib Classes, 314
Stdlib Classes
Conversion Class, 331
DataType Class, 330
DateTime Class, 325
Debug Class, 329
File Class, 327
HashTable Class, 320
Internet Class, 336
Introduction, 313
List Class, 317
Math Class, 322
MySQL Class, 333
ODBC Class, 332
Queue Class, 319
Security Class, 335
Index 1771

SQLite Class, 334
Stack Class, 319
StdBase Class, 314
String Class, 315
System Class, 328
Tree Class, 321
Stdlib Functions
apppath(), 298
binarydigits(), 307
capitalized(), 301
changestring(), 310
dayofweek(), 308
direxists(), 310
endswith(), 304
EpochTime(), 312
evenorodd(), 306
factorial(), 302
factors(), 306
fibonacci(), 303
file2list(), 304
filter(), 300
FSize(), 311
gcd(), 305
getnumber(), 298
getstring(), 298
Introduction, 296
isleapyear(), 307
ismainsourcefile(), 310
isprime(), 303
isspecial(), 301
isvowel(), 302
JustFileName(), 299
JustFilePath(), 298
lcm(), 305
linecount(), 302
list2file(), 303
ListAllFiles() Function, 312
makedir(), 311
map(), 300
matrixmulti(), 307
matrixtrans(), 308
newlist(), 301
palindrome(), 307
permutation(), 308
print(), 297
Print2Str() Function, 297
prodlist(), 306
puts(), 297
readline(), 309
sign(), 303
sleep(), 310
split(), 300
splitmany(), 300
startswith(), 304
substring(), 309
sumlist(), 305
SystemCmd() Function, 312
times(), 299
TrimAll(), 311
TrimLeft(), 311
TrimRight(), 312
value(), 299
StdLib functions and classes written in Ring
Step Option
Str2Hex()
Data Type, 206
str2list() and list2str()
Strings, 193
strcmp()
Strings, 193
String Class
Stdlib Classes, 315
String Literals
Strings, 189
String()
Data Type, 204
Strings
Access String Letters, 189
Convert Letters Case, 189
Copy(), 191
Find SubString, 192
Get Number of Characters from position, 192
Get String Length, 189
Get Substring from position to end, 192
Introduction, 188
Left(), 190
Lines(), 191
Right(), 190
str2list() and list2str(), 193
strcmp(), 193
String Literals, 189
Substr(), 191
Transform Substring To Another Substring, 192
Trim(), 191
StyleFunctions Class
Substr()
Strings, 191
substring()
sumlist()
Summary of Scope Rules
Scope Rules, 675
Super Man 2016 Game
Index 1772

Swap Items
Lists, 188
Switch Between Two Images
RingLibSDL, 434
Switch Statement
Control Structures - Second Style, 158
Control Structures - Third Style, 161
Syntax Flexibility
Change Language Keywords, 681
Change Language Operators, 682
Introduction, 680
Load Syntax Files, 682
Using ’case’ as ’on’ in switch statements, 688
Using ’def’ as ’func’ in functions/methods deﬁni-
tion, 688
Using ’end’ keyword after Pack-
ages/Classes/Functions, 689
Using ’endpackage’/’endclass’/’endfunc’ keywords
after Packages/Classes/Functions, 689
Using ’put’ and ’get’ as ’see’ and ’give’, 688
Using () around the function parameters, 682
in the start of the variable name, 685
Using braces { } in Packages/Classes/Functions, 689
Using braces to start and end different control struc-
tures, 687
Using Semi-colon after and between statements, 684
Using the ’else’ keyword as ’other’ in switch state-
ment, 685
Using the ’elseif’ keyword as ’but’ in if statement,
685
Using the ’end’ keyword in different control struc-
tures, 686
SysGet() Function
System Class
Stdlib Classes, 328
System Functions
ChDir() Function, 227
CurrentDir() Function, 227
Example, 224
ExeFileName() Function, 227
ExeFolder() Function, 227
Get Active Source File Name, 226
Get Command Line Arguments, 225
Introduction, 221
IsAndroid() Function, 224
IsFreeBSD() Function, 224
IsLinux() Function, 224
IsMacOSX() Function, 223
IsMSDOS() Function, 223
IsUnix() Function, 223
IsWindows() Function, 223
IsWindows64() Function, 223
PrevFileName() Function, 226
Shutdown() Function, 228
SysGet() Function, 223
System() Function, 222
Version() Function, 227
Windowsnl() Function, 225
System() Function
SystemCmd() Function
Tempﬁle()
Files, 216
Templates
Tempname()
Files, 216
Testing
Text Class
The Browser Menu
Ring Notepad, 138
The Camera
Graphics, 504
The Cards Game
Demo Programs, 631
The Designer Windows
Form Designer, 655
The Difference between Qt and RingQt
The documentation says functional programming is sup-
ported, but then this happens?
Frequently Asked Questions, 1704
The Edit Menu
Ring Notepad, 136
The File Menu
Ring Notepad, 136
The First GUI Application
The First Triangle
Graphics, 497
The First Window using RingFreeGLUT
Graphics, 495
The Help Menu
Ring Notepad, 139
The Main File in the Project
Ring Notepad, 135
The Natural Library
Index 1773

The Program Menu
Ring Notepad, 138
The Properties
Form Designer, 655
The Self Object
Scope Rules, 663
The Tools Menu
Ring Notepad, 139
The Trace Library and the Interactive Debugger
BreakPoint, 733
Disable BreakPoints, 733
Execute Program Line by Line, 732
Interactive Debugger, 732
Introduction, 730
Loading the Trace library, 731
Pass Error, 732
Trace All Events, 731
Trace control flow between functions, 731
Using the Interactive Debugger, 733
The Type Hints Library
Example, 691
Introduction to the Type Hints Library, 690
Rules, 692
User Types, 691
Using Types inside Code, 692
Why Type Hints?, 691
The View Menu
Ring Notepad, 137
Threads
Threads Support
Code Generator, 758
Three Scopes
Scope Rules, 662
TicTacToe Game
Time()
Date and Time, 195
TimeList()
Date and Time, 196
times()
Trace All Events
The Trace Library and the Interactive Debugger, 731
Trace control flow between functions
The Trace Library and the Interactive Debugger, 731
Trace Library and Interactive Debugger
Transaction Example
Transactions and Using Commit and Rollback
ODBC Functions, 242
Transform Substring To Another Substring
Strings, 192
Transparent Image
Transparent Implementation
Language Design, 30
Tree Class
Stdlib Classes, 321
Triangle Rotation
Graphics, 500
Trim()
Strings, 191
TrimAll()
TrimLeft()
TrimRight()
TrueType Fonts
Try/Carch/Done
Eval() and Debugging, 229
Trying to be natural
Language Design, 25
Type Hints Library
Type()
Data Type, 200
Ungetc()
Files, 218
Unsigned()
Mathematical Functions, 210
Update the Android SDK
Building RingQt Applications for Mobile, 646
Upload Files
URL Encode
Use TTF Fonts
RingLibSDL, 436
User Types
The Type Hints Library, 691
Users registration and Login
Using ’<’ and ’:’ operators as ’from’ keyword
Using ’case’ as ’on’ in switch statements
Syntax Flexibility, 688
Using ’def’ as ’func’ in functions/methods definition
Using ’end’ keyword after Packages/Classes/Functions
Index 1774

The Ring programming language version 1.5.2 book - Part 180 of 181

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The Ring programming language version 1.5.2 book - Part 180 of 181