This document provides code examples for using various Qt GUI widgets and classes in Ring including: 1. QDial to create a dial widget and set its properties like geometry, notches visibility, and value. 2. QWebView to load a web page and display it in the view. 3. QCheckBox to create a checkbox and handle its click event. 4. QRadioButton and QButtonGroup to create radio buttons and group them. 5. Adding a hyperlink to a QLabel. 6. Using QVideoWidget and QMediaPlayer to play multiple videos simultaneously from different positions. 7. QFrame to create and style frames. 8. Display

1. Ring Documentation, Release 1.3
setGeometry(100,50,250,300)
setNotchesVisible(true)
setValue(50)
SetValueChangedEvent("pDialMove()")
}
lineedit1 = new qlineedit(win1) {
setGeometry(200,400,50,30)
setalignment(Qt_AlignHCenter)
settext(string(pdial.value()))
setreturnPressedEvent("pPress()")
}
show()
}
exec()
}
func pIncrement
pdial{val=value()}
pdial.setvalue(val+1)
lineedit1{settext(string(val+1))}
func pDecrement
pdial{val=value()}
pdial.setvalue(val-1)
lineedit1{settext(string(val-1))}
func pPress
lineedit1{val=text()}
pdial.setvalue(number(val))
func pDialMove
lineedit1.settext(""+pdial.value())
49.18. Using QDial 428

2. Ring Documentation, Release 1.3
49.19 Using QWebView
In this example we will learn about using the QWebView class
Load "guilib.ring"
New qApp {
win1 = new qMainWindow() {
setwindowtitle("QWebView")
myweb = new qwebview(win1) {
setGeometry(10,10,600,600)
loadpage(new qurl("http://google.com"))
}
setcentralwidget(myweb)
showMaximized()
}
exec()
}
The application during the runtime
49.19. Using QWebView 429

3. Ring Documentation, Release 1.3
49.20 Using QCheckBox
In this example we will learn about using the QCheckBox class
Load "guilib.ring"
New qApp {
win1 = new qMainWindow() {
setwindowtitle("Using QCheckBox")
new qcheckbox(win1) {
setGeometry(100,100,100,30)
settext("New Customer!")
}
showMaximized()
}
exec()
}
The application during the runtime
49.20. Using QCheckBox 430

4. Ring Documentation, Release 1.3
Another Example:
Load "guilib.ring"
New qApp {
win1 = new qMainWindow() {
setGeometry(100,100,400,300)
setwindowtitle("Using QCheckBox")
### 0-Unchecked 1-Checked
CheckBox = new qcheckbox(win1) {
setGeometry(100,100,160,30)
settext("New Customer!")
setclickedEvent("HandleClickEvent()")
}
show()
}
exec()
}
Func HandleClickEvent
if CheckBox.isChecked() = 1
CheckBox.settext("New Customer. Check 1-ON")
else
CheckBox.settext("New Customer. Check 0-OFF")
ok
49.21 Using QRadioButton and QButtonGroup
In this example we will learn about using the QRadioButton and QButtonGroup classes
Load "guilib.ring"
49.21. Using QRadioButton and QButtonGroup 431

5. Ring Documentation, Release 1.3
New qApp {
win1 = new qMainWindow() {
setwindowtitle("Using QRadioButton")
new qradiobutton(win1) {
setGeometry(100,100,100,30)
settext("One")
}
new qradiobutton(win1) {
setGeometry(100,150,100,30)
settext("Two")
}
new qradiobutton(win1) {
setGeometry(100,200,100,30)
settext("Three")
}
group2 = new qbuttongroup(win1) {
btn4 = new qradiobutton(win1) {
setGeometry(200,150,100,30)
settext("Four")
}
btn5 = new qradiobutton(win1) {
setGeometry(200,200,100,30)
settext("Five")
}
addbutton(btn4,0)
addbutton(btn5,0)
}
showMaximized()
}
exec()
}
The application during the runtime
49.21. Using QRadioButton and QButtonGroup 432

6. Ring Documentation, Release 1.3
49.22 Adding Hyperlink to QLabel
In this example we will learn about creating Hyperlink using the QLabel class
Load "guilib.ring"
New qApp {
win1 = new qMainWindow() {
setwindowtitle("QLabel - Hyperlink")
new qlabel(win1) {
setGeometry(100,100,100,30)
setopenexternallinks(true)
settext('<a href="http://google.com">Google</a>')
}
showMaximized()
}
exec()
}
The application during the runtime
49.22. Adding Hyperlink to QLabel 433

7. Ring Documentation, Release 1.3
49.23 QVideoWidget and QMediaPlayer
In this example we will learn about using the QVideoWidget and QMediaPlayer classes to play a group of movies
from different positions at the same time
Load "guilib.ring"
New qApp {
win1 = new qMainWindow() {
setwindowtitle("QVideoWidget")
btn1 = new qpushbutton(win1) {
setGeometry(0,0,100,30)
settext("play")
setclickevent("player.play() player2.play()
player3.play() player4.play()")
}
videowidget = new qvideowidget(win1) {
setGeometry(50,50,600,300)
setstylesheet("background-color: black")
}
videowidget2 = new qvideowidget(win1) {
setGeometry(700,50,600,300)
setstylesheet("background-color: black")
}
videowidget3 = new qvideowidget(win1) {
setGeometry(50,370,600,300)
setstylesheet("background-color: black")
}
videowidget4 = new qvideowidget(win1) {
49.23. QVideoWidget and QMediaPlayer 434

8. Ring Documentation, Release 1.3
setGeometry(700,370,600,300)
setstylesheet("background-color: black")
}
player = new qmediaplayer() {
setmedia(new qurl("1.mp4"))
setvideooutput(videowidget)
setposition(35*60*1000)
}
player2 = new qmediaplayer() {
setmedia(new qurl("2.mp4"))
setvideooutput(videowidget2)
setposition(23*60*1000)
}
player3 = new qmediaplayer() {
setmedia(new qurl("3.mp4"))
setvideooutput(videowidget3)
setposition(14.22*60*1000)
}
player4 = new qmediaplayer() {
setmedia(new qurl("4.avi"))
setvideooutput(videowidget4)
setposition(8*60*1000)
}
showfullscreen()
}
exec()
}
The application during the runtime
49.23. QVideoWidget and QMediaPlayer 435

9. Ring Documentation, Release 1.3
49.24 Using QFrame
In this example we will learn about using the QFrame class
Load "guilib.ring"
New qApp {
win1 = new qMainWindow() {
setwindowtitle("Using QFrame")
for x = 0 to 10
frame1 = new qframe(win1,0) {
setGeometry(100,20+50*x,400,30)
setframestyle(QFrame_Raised | QFrame_WinPanel)
}
next
showMaximized()
}
exec()
}
The application during the runtime
49.24. Using QFrame 436

10. Ring Documentation, Release 1.3
49.25 Display Image using QLabel
In this example we will learn about displaying an image using the QLabel widget
Load "guilib.ring"
New qApp {
win1 = new qMainWindow() {
setwindowtitle("QLabel - Display image")
new qlabel(win1) {
image = new qpixmap("b:/mahmoud/photo/advice.jpg")
setpixmap(image)
setGeometry(0,0,image.width(),image.height())
}
49.25. Display Image using QLabel 437