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Timer for currently recording audio file

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  • eyllanescE eyllanesc

    @haykarmeni Keep in mind a basic concept: the scope of the variables, probably timer and elapsedTimer are local variables that will be eliminated instantly, maybe you should use pointers or make them members of the class.

    haykarmeniH Offline
    haykarmeniH Offline
    haykarmeni
    wrote on last edited by
    #6

    @eyllanesc yes, I noticed it in my code and changed it but didn't reach to do here before your mention), but anyway no any progress(

    eyllanescE 1 Reply Last reply
    0
    • haykarmeniH haykarmeni

      @eyllanesc yes, I noticed it in my code and changed it but didn't reach to do here before your mention), but anyway no any progress(

      eyllanescE Offline
      eyllanescE Offline
      eyllanesc
      wrote on last edited by
      #7

      @haykarmeni Did my demo code work? If so then the problem is your implementation. If you want more help then you should provide a minimal compilable example.

      If you want me to help you develop some work then you can write to my email: e.yllanescucho@gmal.com.

      haykarmeniH 1 Reply Last reply
      0
      • eyllanescE eyllanesc

        @haykarmeni Did my demo code work? If so then the problem is your implementation. If you want more help then you should provide a minimal compilable example.

        haykarmeniH Offline
        haykarmeniH Offline
        haykarmeni
        wrote on last edited by haykarmeni
        #8

        @eyllanesc here is the code(tried to minimize as much as possible to no violate compiling)

        mainwindow.ui

        <?xml version="1.0" encoding="UTF-8"?>
        <ui version="4.0">
         <class>MainWindow</class>
         <widget class="QMainWindow" name="MainWindow">
          <property name="geometry">
           <rect>
            <x>0</x>
            <y>0</y>
            <width>1000</width>
            <height>250</height>
           </rect>
          </property>
          <property name="windowTitle">
           <string>MainWindow</string>
          </property>
          <widget class="QWidget" name="centralwidget">
           <widget class="QLabel" name="lblBackground">
            <property name="geometry">
             <rect>
              <x>0</x>
              <y>0</y>
              <width>1000</width>
              <height>250</height>
             </rect>
            </property>
            <property name="text">
             <string/>
            </property>
            <property name="pixmap">
             <pixmap resource="Images.qrc">:/img/Icons/background.jpg</pixmap>
            </property>
            <property name="alignment">
             <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
            </property>
           </widget>
           <widget class="QLabel" name="lblText">
            <property name="geometry">
             <rect>
              <x>380</x>
              <y>115</y>
              <width>240</width>
              <height>20</height>
             </rect>
            </property>
            <property name="font">
             <font>
              <family>Arial</family>
              <pointsize>9</pointsize>
             </font>
            </property>
            <property name="text">
             <string>Click the button to start recording...</string>
            </property>
            <property name="alignment">
             <set>Qt::AlignCenter</set>
            </property>
           </widget>
           <widget class="QPushButton" name="btnRecord">
            <property name="geometry">
             <rect>
              <x>482</x>
              <y>200</y>
              <width>36</width>
              <height>36</height>
             </rect>
            </property>
            <property name="cursor">
             <cursorShape>PointingHandCursor</cursorShape>
            </property>
            <property name="text">
             <string/>
            </property>
            <property name="icon">
             <iconset resource="Images.qrc">
              <normaloff>:/img/Icons/microphone button.png</normaloff>:/img/Icons/microphone button.png</iconset>
            </property>
            <property name="iconSize">
             <size>
              <width>30</width>
              <height>30</height>
             </size>
            </property>
           </widget>
           <widget class="QToolButton" name="tlbtnSettings">
            <property name="geometry">
             <rect>
              <x>940</x>
              <y>200</y>
              <width>36</width>
              <height>36</height>
             </rect>
            </property>
            <property name="cursor">
             <cursorShape>PointingHandCursor</cursorShape>
            </property>
            <property name="text">
             <string/>
            </property>
            <property name="icon">
             <iconset resource="Images.qrc">
              <normaloff>:/img/Icons/settings.png</normaloff>:/img/Icons/settings.png</iconset>
            </property>
           </widget>
           <widget class="QPushButton" name="btnStop">
            <property name="geometry">
             <rect>
              <x>460</x>
              <y>200</y>
              <width>36</width>
              <height>36</height>
             </rect>
            </property>
            <property name="cursor">
             <cursorShape>PointingHandCursor</cursorShape>
            </property>
            <property name="text">
             <string/>
            </property>
            <property name="icon">
             <iconset resource="Images.qrc">
              <normaloff>:/img/Icons/stop button.png</normaloff>:/img/Icons/stop button.png</iconset>
            </property>
           </widget>
           <widget class="QPushButton" name="btnPause">
            <property name="geometry">
             <rect>
              <x>502</x>
              <y>200</y>
              <width>36</width>
              <height>36</height>
             </rect>
            </property>
            <property name="cursor">
             <cursorShape>PointingHandCursor</cursorShape>
            </property>
            <property name="text">
             <string/>
            </property>
            <property name="icon">
             <iconset resource="Images.qrc">
              <normaloff>:/img/Icons/pause button.png</normaloff>:/img/Icons/pause button.png</iconset>
            </property>
           </widget>
           <widget class="QLabel" name="lblStatus">
            <property name="geometry">
             <rect>
              <x>60</x>
              <y>30</y>
              <width>80</width>
              <height>20</height>
             </rect>
            </property>
            <property name="font">
             <font>
              <family>Arial</family>
              <pointsize>9</pointsize>
             </font>
            </property>
            <property name="text">
             <string/>
            </property>
            <property name="alignment">
             <set>Qt::AlignCenter</set>
            </property>
           </widget>
           <widget class="QLabel" name="lblDuration">
            <property name="geometry">
             <rect>
              <x>870</x>
              <y>30</y>
              <width>100</width>
              <height>20</height>
             </rect>
            </property>
            <property name="font">
             <font>
              <family>Arial</family>
              <pointsize>9</pointsize>
             </font>
            </property>
            <property name="text">
             <string/>
            </property>
            <property name="alignment">
             <set>Qt::AlignCenter</set>
            </property>
           </widget>
           <widget class="QComboBox" name="cmboxAudioInputs">
            <property name="geometry">
             <rect>
              <x>764</x>
              <y>210</y>
              <width>211</width>
              <height>25</height>
             </rect>
            </property>
           </widget>
          </widget>
         </widget>
         <resources>
          <include location="Images.qrc"/>
         </resources>
         <connections/>
        </ui>
        

        mainwindow.cpp

        void MainWindow::setupGUI(){
            ui->lblText->setStyleSheet("color: white;");
            ui->lblStatus->setStyleSheet("color: white;");
            ui->lblDuration->setStyleSheet("color:white");
            ui->btnPause->setVisible(false);
            ui->btnStop->setVisible(false);
            ui->lblDuration->setVisible(false);
            ui->cmboxAudioInputs->setVisible(false);
        }
        
        void MainWindow::on_btnRecord_clicked()
        {
            ui->btnPause->setVisible(true);//discloses Pause button
            ui->btnStop->setVisible(true);//discloses Stop button
            ui->btnRecord->setVisible(false);//hides Record button
            ui->tlbtnSettings->setVisible(false);//hides Settings toolbutton
            ui->lblText->setVisible(false);//hides "Click the button to start recording" text
            ui->lblStatus->setText("Recording");//changes status
            ui->lblDuration->setVisible(true);
        
            m_recorder = new QAudioRecorder();
            m_recorder->record();
            m_recorder->stateChanged(QMediaRecorder::State::RecordingState);//changes state of recorder
        
            m_Timer.setInterval(1000);
        
            QObject::connect(&m_Timer, &QTimer::timeout, ui->lblDuration, [this](){
                ui->lblDuration->setText(QTime(0, 0, 0).addMSecs(m_elapsedTimer.elapsed()).toString());
            });
        
            QObject::connect(ui->btnRecord, &QPushButton::clicked, &m_Timer, QOverload<>::of(&QTimer::start));
            QObject::connect(ui->btnRecord, &QPushButton::clicked, ui->lblDuration, [this](){
                                                                                             m_elapsedTimer.start();
                                                                                             ui->lblDuration->setText(QTime(0, 0, 0).addMSecs(m_elapsedTimer.elapsed()).toString());
                                                                                             });
        
            QObject::connect(ui->btnStop, &QPushButton::clicked, &m_Timer, &QTimer::stop);
        }
        

        mainwindow.h

        #ifndef MAINWINDOW_H
        #define MAINWINDOW_H
        
        #include <QMainWindow>
        #include <QMediaRecorder>
        #include <QAudioRecorder>
        #include <QAudioEncoderSettings>
        #include <QAudioDeviceInfo>
        #include <QTimer>
        #include <QTime>
        #include <QDebug>
        #include <QElapsedTimer>
        #include <QString>
        #include <QUrl>
        #include <QFileDialog>
        #include <QStringList>
        #include <QApplication>
        #include <QElapsedTimer>
        #include <QVBoxLayout>
        #include <QWidget>
        
        QT_BEGIN_NAMESPACE
        namespace Ui { class MainWindow; }
        QT_END_NAMESPACE
        
        class MainWindow : public QMainWindow
        {
            Q_OBJECT
        
        public:
            MainWindow(QWidget *parent = nullptr);
            ~MainWindow();
            void setupGUI();
        
        private slots:
            void on_btnRecord_clicked();
        
            void on_tlbtnSettings_clicked();
        
            void on_btnStop_clicked();
        
            void on_btnPause_clicked();
        
        private:
            QTimer m_Timer;
            QElapsedTimer m_elapsedTimer;
            Ui::MainWindow *ui;
            QAudioRecorder *m_recorder;
            QAudioEncoderSettings *m_settings;
        };
        #endif // MAINWINDOW_H
        

        main.cpp

        #include "mainwindow.h"
        
        #include <QApplication>
        
        int main(int argc, char *argv[])
        {
            QApplication a(argc, argv);
            MainWindow w;
            w.show();
            return a.exec();
        }
        
        J.HilkJ 1 Reply Last reply
        0
        • haykarmeniH haykarmeni

          @eyllanesc here is the code(tried to minimize as much as possible to no violate compiling)

          mainwindow.ui

          <?xml version="1.0" encoding="UTF-8"?>
          <ui version="4.0">
           <class>MainWindow</class>
           <widget class="QMainWindow" name="MainWindow">
            <property name="geometry">
             <rect>
              <x>0</x>
              <y>0</y>
              <width>1000</width>
              <height>250</height>
             </rect>
            </property>
            <property name="windowTitle">
             <string>MainWindow</string>
            </property>
            <widget class="QWidget" name="centralwidget">
             <widget class="QLabel" name="lblBackground">
              <property name="geometry">
               <rect>
                <x>0</x>
                <y>0</y>
                <width>1000</width>
                <height>250</height>
               </rect>
              </property>
              <property name="text">
               <string/>
              </property>
              <property name="pixmap">
               <pixmap resource="Images.qrc">:/img/Icons/background.jpg</pixmap>
              </property>
              <property name="alignment">
               <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
              </property>
             </widget>
             <widget class="QLabel" name="lblText">
              <property name="geometry">
               <rect>
                <x>380</x>
                <y>115</y>
                <width>240</width>
                <height>20</height>
               </rect>
              </property>
              <property name="font">
               <font>
                <family>Arial</family>
                <pointsize>9</pointsize>
               </font>
              </property>
              <property name="text">
               <string>Click the button to start recording...</string>
              </property>
              <property name="alignment">
               <set>Qt::AlignCenter</set>
              </property>
             </widget>
             <widget class="QPushButton" name="btnRecord">
              <property name="geometry">
               <rect>
                <x>482</x>
                <y>200</y>
                <width>36</width>
                <height>36</height>
               </rect>
              </property>
              <property name="cursor">
               <cursorShape>PointingHandCursor</cursorShape>
              </property>
              <property name="text">
               <string/>
              </property>
              <property name="icon">
               <iconset resource="Images.qrc">
                <normaloff>:/img/Icons/microphone button.png</normaloff>:/img/Icons/microphone button.png</iconset>
              </property>
              <property name="iconSize">
               <size>
                <width>30</width>
                <height>30</height>
               </size>
              </property>
             </widget>
             <widget class="QToolButton" name="tlbtnSettings">
              <property name="geometry">
               <rect>
                <x>940</x>
                <y>200</y>
                <width>36</width>
                <height>36</height>
               </rect>
              </property>
              <property name="cursor">
               <cursorShape>PointingHandCursor</cursorShape>
              </property>
              <property name="text">
               <string/>
              </property>
              <property name="icon">
               <iconset resource="Images.qrc">
                <normaloff>:/img/Icons/settings.png</normaloff>:/img/Icons/settings.png</iconset>
              </property>
             </widget>
             <widget class="QPushButton" name="btnStop">
              <property name="geometry">
               <rect>
                <x>460</x>
                <y>200</y>
                <width>36</width>
                <height>36</height>
               </rect>
              </property>
              <property name="cursor">
               <cursorShape>PointingHandCursor</cursorShape>
              </property>
              <property name="text">
               <string/>
              </property>
              <property name="icon">
               <iconset resource="Images.qrc">
                <normaloff>:/img/Icons/stop button.png</normaloff>:/img/Icons/stop button.png</iconset>
              </property>
             </widget>
             <widget class="QPushButton" name="btnPause">
              <property name="geometry">
               <rect>
                <x>502</x>
                <y>200</y>
                <width>36</width>
                <height>36</height>
               </rect>
              </property>
              <property name="cursor">
               <cursorShape>PointingHandCursor</cursorShape>
              </property>
              <property name="text">
               <string/>
              </property>
              <property name="icon">
               <iconset resource="Images.qrc">
                <normaloff>:/img/Icons/pause button.png</normaloff>:/img/Icons/pause button.png</iconset>
              </property>
             </widget>
             <widget class="QLabel" name="lblStatus">
              <property name="geometry">
               <rect>
                <x>60</x>
                <y>30</y>
                <width>80</width>
                <height>20</height>
               </rect>
              </property>
              <property name="font">
               <font>
                <family>Arial</family>
                <pointsize>9</pointsize>
               </font>
              </property>
              <property name="text">
               <string/>
              </property>
              <property name="alignment">
               <set>Qt::AlignCenter</set>
              </property>
             </widget>
             <widget class="QLabel" name="lblDuration">
              <property name="geometry">
               <rect>
                <x>870</x>
                <y>30</y>
                <width>100</width>
                <height>20</height>
               </rect>
              </property>
              <property name="font">
               <font>
                <family>Arial</family>
                <pointsize>9</pointsize>
               </font>
              </property>
              <property name="text">
               <string/>
              </property>
              <property name="alignment">
               <set>Qt::AlignCenter</set>
              </property>
             </widget>
             <widget class="QComboBox" name="cmboxAudioInputs">
              <property name="geometry">
               <rect>
                <x>764</x>
                <y>210</y>
                <width>211</width>
                <height>25</height>
               </rect>
              </property>
             </widget>
            </widget>
           </widget>
           <resources>
            <include location="Images.qrc"/>
           </resources>
           <connections/>
          </ui>
          

          mainwindow.cpp

          void MainWindow::setupGUI(){
              ui->lblText->setStyleSheet("color: white;");
              ui->lblStatus->setStyleSheet("color: white;");
              ui->lblDuration->setStyleSheet("color:white");
              ui->btnPause->setVisible(false);
              ui->btnStop->setVisible(false);
              ui->lblDuration->setVisible(false);
              ui->cmboxAudioInputs->setVisible(false);
          }
          
          void MainWindow::on_btnRecord_clicked()
          {
              ui->btnPause->setVisible(true);//discloses Pause button
              ui->btnStop->setVisible(true);//discloses Stop button
              ui->btnRecord->setVisible(false);//hides Record button
              ui->tlbtnSettings->setVisible(false);//hides Settings toolbutton
              ui->lblText->setVisible(false);//hides "Click the button to start recording" text
              ui->lblStatus->setText("Recording");//changes status
              ui->lblDuration->setVisible(true);
          
              m_recorder = new QAudioRecorder();
              m_recorder->record();
              m_recorder->stateChanged(QMediaRecorder::State::RecordingState);//changes state of recorder
          
              m_Timer.setInterval(1000);
          
              QObject::connect(&m_Timer, &QTimer::timeout, ui->lblDuration, [this](){
                  ui->lblDuration->setText(QTime(0, 0, 0).addMSecs(m_elapsedTimer.elapsed()).toString());
              });
          
              QObject::connect(ui->btnRecord, &QPushButton::clicked, &m_Timer, QOverload<>::of(&QTimer::start));
              QObject::connect(ui->btnRecord, &QPushButton::clicked, ui->lblDuration, [this](){
                                                                                               m_elapsedTimer.start();
                                                                                               ui->lblDuration->setText(QTime(0, 0, 0).addMSecs(m_elapsedTimer.elapsed()).toString());
                                                                                               });
          
              QObject::connect(ui->btnStop, &QPushButton::clicked, &m_Timer, &QTimer::stop);
          }
          

          mainwindow.h

          #ifndef MAINWINDOW_H
          #define MAINWINDOW_H
          
          #include <QMainWindow>
          #include <QMediaRecorder>
          #include <QAudioRecorder>
          #include <QAudioEncoderSettings>
          #include <QAudioDeviceInfo>
          #include <QTimer>
          #include <QTime>
          #include <QDebug>
          #include <QElapsedTimer>
          #include <QString>
          #include <QUrl>
          #include <QFileDialog>
          #include <QStringList>
          #include <QApplication>
          #include <QElapsedTimer>
          #include <QVBoxLayout>
          #include <QWidget>
          
          QT_BEGIN_NAMESPACE
          namespace Ui { class MainWindow; }
          QT_END_NAMESPACE
          
          class MainWindow : public QMainWindow
          {
              Q_OBJECT
          
          public:
              MainWindow(QWidget *parent = nullptr);
              ~MainWindow();
              void setupGUI();
          
          private slots:
              void on_btnRecord_clicked();
          
              void on_tlbtnSettings_clicked();
          
              void on_btnStop_clicked();
          
              void on_btnPause_clicked();
          
          private:
              QTimer m_Timer;
              QElapsedTimer m_elapsedTimer;
              Ui::MainWindow *ui;
              QAudioRecorder *m_recorder;
              QAudioEncoderSettings *m_settings;
          };
          #endif // MAINWINDOW_H
          

          main.cpp

          #include "mainwindow.h"
          
          #include <QApplication>
          
          int main(int argc, char *argv[])
          {
              QApplication a(argc, argv);
              MainWindow w;
              w.show();
              return a.exec();
          }
          
          J.HilkJ Offline
          J.HilkJ Offline
          J.Hilk
          Moderators
          wrote on last edited by
          #9

          so, @haykarmeni and where is your connection to the timeout signal of the QTimer, to update the label? 😉


          Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


          Q: What's that?
          A: It's blue light.
          Q: What does it do?
          A: It turns blue.

          haykarmeniH 1 Reply Last reply
          1
          • J.HilkJ J.Hilk

            so, @haykarmeni and where is your connection to the timeout signal of the QTimer, to update the label? 😉

            haykarmeniH Offline
            haykarmeniH Offline
            haykarmeni
            wrote on last edited by
            #10

            @J-Hilk , please could you tell me what kind of code I need to add?

            eyllanescE 1 Reply Last reply
            0
            • haykarmeniH haykarmeni

              @J-Hilk , please could you tell me what kind of code I need to add?

              eyllanescE Offline
              eyllanescE Offline
              eyllanesc
              wrote on last edited by
              #11

              @haykarmeni In my code there is QObject::connect(&timer, &QTimer::timeout, label, [label, &elapsedTimer](){ label->setText(QTime(0, 0, 0).addMSecs(elapsedTimer.elapsed()).toString()); }); , where is the equivalent in your code?

              If you want me to help you develop some work then you can write to my email: e.yllanescucho@gmal.com.

              haykarmeniH 2 Replies Last reply
              2
              • eyllanescE eyllanesc

                @haykarmeni In my code there is QObject::connect(&timer, &QTimer::timeout, label, [label, &elapsedTimer](){ label->setText(QTime(0, 0, 0).addMSecs(elapsedTimer.elapsed()).toString()); }); , where is the equivalent in your code?

                haykarmeniH Offline
                haykarmeniH Offline
                haykarmeni
                wrote on last edited by
                #12
                This post is deleted!
                1 Reply Last reply
                0
                • eyllanescE eyllanesc

                  @haykarmeni In my code there is QObject::connect(&timer, &QTimer::timeout, label, [label, &elapsedTimer](){ label->setText(QTime(0, 0, 0).addMSecs(elapsedTimer.elapsed()).toString()); }); , where is the equivalent in your code?

                  haykarmeniH Offline
                  haykarmeniH Offline
                  haykarmeni
                  wrote on last edited by
                  #13

                  @eyllanesc , I added QObject::connect(&m_Timer, &QTimer::timeout, ui->lblDuration, [this](){ ui->lblDuration->setText(QTime(0, 0, 0).addMSecs(m_elapsedTimer.elapsed()).toString()); });, but it still does not work :(

                  1 Reply Last reply
                  0
                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #14

                    Did you check that your lambda is called ?

                    Interested in AI ? www.idiap.ch
                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                    haykarmeniH 1 Reply Last reply
                    0
                    • SGaistS SGaist

                      Did you check that your lambda is called ?

                      haykarmeniH Offline
                      haykarmeniH Offline
                      haykarmeni
                      wrote on last edited by haykarmeni
                      #15

                      @SGaist , I checked it, it works, but the strange thing was that I have to double-click on btnRecord to start recording, that is why I got lost, but actually, I don't want to have that feature, I want just a one-click event

                      eyllanescE 1 Reply Last reply
                      0
                      • haykarmeniH haykarmeni

                        @SGaist , I checked it, it works, but the strange thing was that I have to double-click on btnRecord to start recording, that is why I got lost, but actually, I don't want to have that feature, I want just a one-click event

                        eyllanescE Offline
                        eyllanescE Offline
                        eyllanesc
                        wrote on last edited by eyllanesc
                        #16

                        @haykarmeni You should point that out from the beginning, if you don't give us information it is difficult to help you. Move all connections to the constructor, also this lines:

                        m_recorder = new QAudioRecorder();
                        m_recorder->stateChanged(QMediaRecorder::State::RecordingState);//changes state of recorder
                        
                        m_Timer.setInterval(1000);
                        

                        Just leave the following in the slot:

                        void MainWindow::on_btnRecord_clicked()
                        {
                            ui->btnPause->setVisible(true);//discloses Pause button
                            ui->btnStop->setVisible(true);//discloses Stop button
                            ui->btnRecord->setVisible(false);//hides Record button
                            ui->tlbtnSettings->setVisible(false);//hides Settings toolbutton
                            ui->lblText->setVisible(false);//hides "Click the button to start recording" text
                            ui->lblStatus->setText("Recording");//changes status
                            ui->lblDuration->setVisible(true);
                            m_recorder->record();
                        }
                        

                        If you want me to help you develop some work then you can write to my email: e.yllanescucho@gmal.com.

                        haykarmeniH 1 Reply Last reply
                        2
                        • eyllanescE eyllanesc

                          @haykarmeni You should point that out from the beginning, if you don't give us information it is difficult to help you. Move all connections to the constructor, also this lines:

                          m_recorder = new QAudioRecorder();
                          m_recorder->stateChanged(QMediaRecorder::State::RecordingState);//changes state of recorder
                          
                          m_Timer.setInterval(1000);
                          

                          Just leave the following in the slot:

                          void MainWindow::on_btnRecord_clicked()
                          {
                              ui->btnPause->setVisible(true);//discloses Pause button
                              ui->btnStop->setVisible(true);//discloses Stop button
                              ui->btnRecord->setVisible(false);//hides Record button
                              ui->tlbtnSettings->setVisible(false);//hides Settings toolbutton
                              ui->lblText->setVisible(false);//hides "Click the button to start recording" text
                              ui->lblStatus->setText("Recording");//changes status
                              ui->lblDuration->setVisible(true);
                              m_recorder->record();
                          }
                          
                          haykarmeniH Offline
                          haykarmeniH Offline
                          haykarmeni
                          wrote on last edited by haykarmeni
                          #17

                          thank you, @eyllanesc, now it works as I expect...thank you very much for so much assistance and readiness :)

                          1 Reply Last reply
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