demo5

All of these demos will be preset for the raspberry 'RPI3
but can easily be changed for x86_64 changing and uncommenting one line of code
I also tried this on Manjaro archlinux RPI3

'RPI3
PRAGMA OPTIONS -Wno-write-strings -Wno-pointer-arith -I/usr/include/arm-linux-gnueabihf/qt5 -fPIC

but lets say you want to test on an x86_64
well just comment out the the PRAGMA line for the RPI3

and uncomment the x86_64 PRAGMA line

'x86_64
PRAGMA OPTIONS -Wno-write-strings -Wno-pointer-arith -Wno-deprecated -fPIC -I/usr/include/x86_64-linux-gnu/qt5 

I like archlinux Manjaro too very cutting edge software versions!

'Manjaro archlinux RPI
PRAGMA OPTIONS -Wno-write-strings -Wno-pointer-arith -I/usr/include/qt5 -fPIC

---

demo5 QT5

dowload the source code

demo5.bac

PRAGMA INCLUDE <QtWidgets/QApplication>    <QtWidgets/QMainWindow> <QtWidgets/QComboBox>   <QtWidgets/QHBoxLayout>  <QtWidgets/QLabel>
PRAGMA INCLUDE <QtWidgets/QPushButton>   <QtWidgets/QStatusBar>   <QtWidgets/QFrame>   <QtWidgets/QVBoxLayout> 
PRAGMA INCLUDE <QtWidgets/QListWidget> <QtCore/QDebug>  <QtWidgets/QInputDialog>
PRAGMA INCLUDE  <iostream>
PRAGMA LDFLAGS -lQt5Widgets -lQt5Gui -lQt5Core  -lpthread -latomic 
PRAGMA COMPILER g++
'RPI3
PRAGMA OPTIONS -Wno-write-strings -Wno-pointer-arith -I/usr/include/arm-linux-gnueabihf/qt5 -fPIC

'x86_64
'PRAGMA OPTIONS -Wno-write-strings -Wno-pointer-arith -Wno-deprecated -fPIC -I/usr/include/x86_64-linux-gnu/qt5 

'Manjaro archlinux RPI
'PRAGMA OPTIONS -Wno-write-strings -Wno-pointer-arith -I/usr/include/qt5 -fPIC

OPTION PARSE FALSE




    DECLARE app TYPE QApplication*
    DECLARE hbox  TYPE QHBoxLayout*
    DECLARE vbox  TYPE QVBoxLayout*
    DECLARE add  TYPE QPushButton*
    DECLARE renamed TYPE QPushButton*
    DECLARE removeme TYPE QPushButton*
    DECLARE removeall TYPE QPushButton*
    DECLARE lw TYPE QListWidget*
    DECLARE Statusbar TYPE QStatusBar*
    DECLARE w  TYPE QWidget*
    DECLARE inputDialog TYPE QInputDialog*





'---must include this <QtCore/QDebug>
'--- a new macro without formatting or casting or c++ 
DEF FN  PRINTOUT(x) =  qDebug()  << (x)

'--------------------------------------
SUB addPressed() 
'--------------------------------------
    LOCAL c_text TYPE QString
    LOCAL s_text TYPE QString
    LOCAL r TYPE int 
    Statusbar->showMessage( "add", 4000)
    '---note the 4000 is 4 seconds to view the message

    '--- place holder 
    b$ = "some string here"     
    '--- when you need a string or value as a result   QInputDialog::  works  (this wont inputDialog->)
    c_text  =  QInputDialog::getText(0, "Input dialog","add something here:", QLineEdit::Normal,b$)
    s_text = c_text.simplified()

    IF  s_text.isEmpty() == false THEN

        lw->addItem(c_text)

        r = lw->count() - 1
        lw->setCurrentRow(r)
    END IF

END SUB

'--------------------------------------
SUB renamePressed() 
'--------------------------------------
    Statusbar->showMessage("rename ", 4000)

    LOCAL curitem TYPE  QListWidgetItem*
    LOCAL r TYPE int 
    LOCAL r_text TYPE QString
    LOCAL c_text TYPE QString
    LOCAL s_text TYPE QString
    LOCAL removeitem TYPE QListWidgetItem*

    curitem = lw->currentItem()
    r = lw->row(curitem)
    c_text = curitem->text()

    '---special note replace "this" with 0 or else your cast will not work
    r_text = QInputDialog::getText(0,"Item", "Enter new item", QLineEdit::Normal, c_text)
    s_text = r_text.simplified()

    IF s_text.isEmpty() == false  THEN 

        removeitem = lw->takeItem(r)
        delete removeitem
        lw->insertItem(r, s_text)
        lw->setCurrentRow(r)
    END IF 


END SUB

'--------------------------------------
SUB removePressed() 
'--------------------------------------
    Statusbar->showMessage("remove", 4000)
    LOCAL r TYPE int
    LOCAL removeitem TYPE QListWidgetItem*
    r = lw->currentRow()

    IF (r != -1) THEN

        removeitem = lw->takeItem(r)
        delete removeitem
    END IF

END SUB 


'--------------------------------------
SUB removeallPressed() 
'--------------------------------------
    Statusbar->showMessage("remove all ", 4000)

    IF  (lw->count() != 0) THEN 
        lw->clear()
    END IF
END SUB 



'--------------------------------------
SUB clickedsub() 
'--------------------------------------
    '--- I figured out how to get the selected from a click
    Statusbar->showMessage(lw->currentItem()->text(), 4000)

    '--- how to get the terminal out strings of the selected text
    PRINTOUT(lw->currentItem()->text())
END SUB 





      app = new QApplication(argc, argv)
      '--- Create a widget instead of a window
      w = new QWidget()

      hbox = new QHBoxLayout()
      vbox = new QVBoxLayout()

      lw = new QListWidget()
      lw->addItem("apples")
      lw->addItem("oranges")
      lw->addItem("mangos")
      lw->addItem("bananas")
      lw->addItem("lemons")

      add = new QPushButton("Add")
      renamed = new QPushButton("Rename")
      removeme = new QPushButton("Remove")
      removeall = new QPushButton("Remove All")

      vbox->setSpacing(3)
      vbox->addStretch(1)
      vbox->addWidget(add)
      vbox->addWidget(renamed)
      vbox->addWidget(removeme)
      vbox->addWidget(removeall)
      vbox->addStretch(1)
      hbox->addWidget(lw)
      hbox->addSpacing(15)
      hbox->addLayout(vbox)



      '---will pop up as its own widget 
      inputDialog = new QInputDialog()
      '--only the next  line goes in the callback or it wont work 
      'inputDialog->getText(0, "Input dialog","add something here:", QLineEdit::Normal,"hello")

      inputDialog->setOkButtonText("OK")
      inputDialog->setCancelButtonText("Cancel")
      inputDialog->setTextEchoMode(QLineEdit::Normal)


      '--- Set the hbox as the layout of the widget
      '--- this fixes having a window and a widget that are not joined
      Statusbar = new QStatusBar()


      '---add the statusbar widget
      hbox->addWidget(Statusbar, 3, Qt::AlignBottom)
      w->setLayout(hbox )


      QObject::connect(add, &QPushButton::clicked, addPressed)
      QObject::connect(renamed, &QPushButton::clicked, renamePressed)
      QObject::connect(removeme, &QPushButton::clicked, removePressed)
      QObject::connect(removeall, &QPushButton::clicked, removeallPressed)
      '--- added a custom callback to get the listwidget 
      QObject::connect(lw, &QListWidget::itemClicked, clickedsub)


      w->resize(500, 200)
      w->setWindowTitle("Listwidget demo advanced")
      inputDialog->hide()
      w->show()

      return app->exec()