Connect KeyboardEvent to button visible to false/True

Similar Questions

• How to connect the slot button Cascades

  I am new to waterfalls and QML and yesterday I tried to port native QtWidget app to waterfalls, but it does not. The problem is, I add some buttons to the container in QML main file and coded my custom slot function which should be executed when the user click some button. But I don't know how to connect the clicked() signal to my function from the custom location.

  When using

  Connect (CloseButton, signal(Button::clicked()),this,slot(on_closeButton_clicked()));) or connect (exitButton, SIGNAL (clicked ()), this, SLOT (on_exitButton_clicked ())); I get error "unable to connect SIGNAL (null) to SLOT (on_closeButton_clicked ()) ' on all the buttons.

  Here is my code in app.cpp

  App::App()
  {
      QmlDocument *qml = QmlDocument::create("main.qml");
      qml->setContextProperty("cs", this);
  
      AbstractPane *root = qml->createRootNode();
      Application::setScene(root);
      textHolder = root->findChild("textHolder");
      openButton = root->findChild("openButton");
      saveButton = root->findChild("saveButton");
      saveAsButton = root->findChild("saveAsButton");
      closeButton = root->findChild("closeButton");
      exitButton = root->findChild("exitButton");
  
      connect(openButton,SIGNAL(Button::clicked()),this,SLOT(on_openButton_clicked()));
      connect(saveButton,SIGNAL(Button::clicked()),this,SLOT(on_saveButton_clicked()));
      connect(saveAsButton,SIGNAL(Button::clicked()),this,SLOT(on_saveAsButton_clicked()));
      connect(closeButton,SIGNAL(Button::clicked()),this,SLOT(on_closeButton_clicked()));
      connect(exitButton,SIGNAL(clicked()),this,SLOT(on_exitButton_clicked()));
  }
  
  //one slot function
  
  void App::on_closeButton_clicked()
  {
  //ui->textEdit->clear();
      textHolder->resetText();
  //if(file.open(QIODevice::ReadOnly | QIODevice::Text)){
      file.close();
      fileName.clear();
  //}
  }
  

  And qml

  import bb.cascades 1.0
  
  Page {
      id: mainPage
      content:
      Container {
      id: main
      Container {
      id: buttonHolder
      scrollMode: ScrollMode.None
              layout: StackLayout {
                  layoutDirection: LayoutDirection.LeftToRight
                  leftPadding: 5.0
                  rightPadding: 5.0
                  topPadding: 5.0
                  bottomPadding: 5.0
              }
              touchPropagationMode: TouchPropagationMode.None
              objectName: "buttonHolder"
              Button {
                  id: openButton
                  text: "Open"
              }
              Button {
                  id: closeButton
                  text: "Close"
                  onClicked: {
                  }
              }
              Button {
                  id: saveButton
                  text: "Save"
                  onClicked: {
                  }
              }
              Button {
                  id: saveAsButton
                  text: "Save As"
                  onClicked: {
                  }
              }
              Button {
                  id: exitButton
                  text: "Exit"
              }
          }
  
      //********************************
          Container {
              id: textHolderArea
              layout: AbsoluteLayout {
              }
              topMargin: 5.0
              leftMargin: 1.0
              rightMargin: 1.0
              bottomMargin: 2.0
              TextArea {
                  id: textHolder
                  textStyle.fontStyleHint: FontStyleHint.Default
                  layoutProperties: AbsoluteLayoutProperties {
                  }
                  leftMargin: 5.0
                  rightMargin: 5.0
                  preferredHeight: 645.0
                  textStyle.justification: TextJustification.Enabled
                  objectName: "textHolder"
                  text: ""
              }
          }
      //********************************
      }
  }
  

  And I have no idea how call my app.cpp C++ slot in my main QML file

  Your buttons should an objectName set to be visible to C++, the id is only visible inside the QML.

• How to convert only the first false true after a series of real values

  Hello

  I would like to know how I can convert only the first value false true after a series of true values. For example, I want to make the TTTFFF to TTTTFF.

  
  

• setLineWrap (true) versus firePropertyChange ("lineWrap", false, true);

  I'm trying to figure out what to do about my packing against the problem of the column line. I want my text boxes to wrap properly but also have their width of the appropriate column if they have less than 14 characters. Because of the problem of the column, I looked in the JDK source code and found that JTextArea.setLineWrap (true) is supposed to pull the equivalent code JTextArea.firePropertyChange ("lineWrap", false, true). So I put in place that, but when I do this, my lines won't wrap. I don't know if it is a bug in Java (in this case, is there another solution I could use?) or if I do something wrong (in this case, how to fix it?).
  
  Thanks again.
  

  package sscce2;
  
  import java.awt.BorderLayout;
  import java.awt.Color;
  import java.awt.FlowLayout;
  import java.awt.Font;
  import java.awt.GridLayout;
  import java.awt.LayoutManager;
  
  import javax.swing.BorderFactory;
  import javax.swing.JComponent;
  import javax.swing.JFrame;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JTextArea;
  import javax.swing.WindowConstants;
  
  public class SSCCE
  {
       int           choice     = 0;
       JPanel       mainPanel     = null, secondPanel = null, mainSubPanel[] = null,
           secondSubPanel[] = null;
       JTextArea     ta[]     = null;
       
       public SSCCE()
       {
            final JFrame f = new JFrame();
            ta = new JTextArea[5];
            mainSubPanel = new JPanel[12];
            ta[0] = cTA("13 cols 1 row", true);
            ta[1] = cTA("13 cols 1 row", false);
            ta[2] = cTA("I want 12 columns, 3 rows in this one", true);
            ta[3] = cTA("I want 12 columns, 3 rows in this one", false);
            ta[4] = cTA("I want 12\r\ncolumns, 3 \r\nrows in this\r\none", false);
            ta[4].setColumns(12);
            ta[4].setRows(3);
            mainSubPanel[0] = createPanel(new JLabel());
            mainSubPanel[1] = createPanel(new JLabel("setLineWrap()"));
            mainSubPanel[2] = createPanel(new JLabel("nothing"));
            mainSubPanel[3] = createPanel(new JLabel("wrap"));
            mainSubPanel[4] = createPanel(ta[0]);
            mainSubPanel[5] = createPanel(ta[1]);
            mainSubPanel[6] = createPanel(new JLabel("non-wrap"));
            mainSubPanel[7] = createPanel(ta[2]);
            mainSubPanel[8] = createPanel(ta[3]);
            mainSubPanel[9] =
                createPanel(
                    new JLabel(
                        "<html>This is what I want when<br/>the user enters data. ==&gt;</html>"),
                    FlowLayout.LEFT);
            mainSubPanel[10] = createPanel(ta[4], FlowLayout.LEFT);
            mainSubPanel[11] = createPanel(new JLabel(""));
            setBottomBorders(mainSubPanel[6], mainSubPanel[7], mainSubPanel[8]);
            mainPanel = createPanel(new GridLayout(4, 3), mainSubPanel);
            f.setSize(485, 338);
            f.setTitle("SSCCE");
            f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
            f.setLocationRelativeTo(null);
            f.add(mainPanel, BorderLayout.CENTER);
            f.setVisible(true);
       }
       
       public static void main(final String[] args)
       {
            new SSCCE();
       }
       
       public final JPanel createPanel(final JComponent... component)
       {
            final JPanel p = new JPanel();
            for (final JComponent element : component)
            {
                 p.add(element);
            }
            p.setBackground(Color.WHITE);
            return p;
       }
       
       public final JPanel
           createPanel(final JComponent component, final int align)
       {
            final JPanel p = new JPanel();
            p.add(component, align);
            p.setBackground(Color.WHITE);
            return p;
       }
       
       public final JPanel createPanel(final LayoutManager layout,
           final JComponent... component)
       {
            final JPanel p = createPanel(component);
            p.setLayout(layout);
            return p;
       }
       
       public final JTextArea cTA(final String text, final boolean lineWrap)
       {
            final JTextArea t = new JTextArea(text, 1, Math.min(text.length(), 12));
            t.setFont(new Font("Courier New", Font.BOLD, 12));
            t.setBorder(BorderFactory.createLineBorder(Color.BLACK));
            if (lineWrap)
            {
                 t.setLineWrap(true);
            }
            t.setWrapStyleWord(true);
            return t;
       }
       
       public final void setBottomBorders(final JPanel... panels)
       {
            for (final JPanel element : panels)
            {
                 element.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0,
                     Color.BLACK));
            }
       }
  }

  Published by: ElectrifiedBrain on March 24, 2011 17:05
  
  Edit: I changed this to have a new NBS that shows exactly what I compared to what is happening with setLineWrap() or nothing.

  Can't sleep, so barbatruc!

  import java.awt.*;
  import javax.swing.*;
  
  public class TestTextArea {
  
      public static void main(final String[] args) {
          EventQueue.invokeLater(new Runnable() {
              public void run() {
                  FlowLayout layout = new FlowLayout();
                  layout.setAlignOnBaseline(true);
                  JPanel panel = new JPanel(layout);
                  panel.add(createTextArea("1234"));
                  panel.add(createTextArea("123456789012345678901"));
                  panel.add(createTextArea("text"));
                  panel.add(createTextArea("text that should wrap"));
  
                  JFrame f = new JFrame("Barbatruc!");
                  f.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
                  f.getContentPane().add(panel);
                  f.pack();
                  f.setLocationRelativeTo(null);
                  f.setVisible(true);
              }
          });
      }
  
      public static JTextArea createTextArea(String text) {
          JTextArea t = new JTextArea(text, 1, Math.min(text.length(), 12));
          t.setFont(new Font(Font.MONOSPACED, Font.BOLD, 12));
          t.setLineWrap(true);
          t.setWrapStyleWord(true);
          // the preferred size calculation will use the current width/height
          // and we want to have it grow in height not width
          // might also work by setting the text after showing the text area
          // instead of this
          t.setSize(0, Short.MAX_VALUE);
          return t;
      }
  }
  

  Don't ask me why he has that Colocation of 11 characters with 12 columns with monoscaped font, but looks like to do the packaging (try the spaces to positions on 11/12/13.)

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  Hi all!
  
  I have a button on my form... The design-time I made invisible by setting the visible property 'No' in the property palette...
  
  Based on a condition that I have to make this button visible when running!
  
  For the text box, it can be done through set_item_property, but for this button?
  
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  Thank you

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              currentTargetArray.push(letterTraced);
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  {

  clickedLettersArray.pop ();

  define the array to a string;

  var correctedWord:String = clickedLettersArray.join(",");

  the true sprite to compare the value

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  hero_txt. Text = correctedWord;

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  IT IS THE RIGHT CODE, IF SOMEONE NEEDS.

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