KeyCode
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Affichage des articles dont le libellé est KeyCode. Afficher tous les articles

Javascript KeyChar, KeyCode

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How To Use Key Char And Key Code In JS

js keycode & keychar


In this JavaScript tutorial, we will explore how to utilize charCode and keyCode on both key press and key down events. With JavaScript programming language and NetBeans editor, you have the ability to easily check the specific key that has been pressed, offering a greater level of control and functionality.


Project Source Code:


<!DOCTYPE html>
<html>
    <head>
        <title>JavaScript: Key Code - Char Code</title>
        <meta charset="windows-1252">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
    </head>
    <body onkeypress="listenKey(event)">
        <script>
            
            function listenKey(event)
            {
                var cd = event.keyCode, ch = event.charCode,val = String.fromCharCode(ch);
                console.log("keyCode = "+cd+" charCode = "+ch + " Value = "+ val);
            }
            
        </script>
    </body>
</html>

Java JTable And Arrow Keys

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How To Use JTable With Arrow Keys To Display Row Data Using Java NetBeans

jtable with arrow keys in java
In this Java Tutorial we will see How To Display JTable Rows Data Into JTextFields On Direction Keys (UP, RIGHT, DOWN, LEFT) Released Using getKeyCode + DefaultTableModel In Java NetBeans .


Project Source Code:

DefaultTableModel model;
model = (DefaultTableModel)jTable1.getModel();
int index;


// get selected row on mouse click
private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {                                     
        
           index = jTable1.getSelectedRow();
           jTextField1.setText(model.getValueAt(index, 0).toString());
           jTextField2.setText(model.getValueAt(index, 1).toString());
           jTextField3.setText(model.getValueAt(index, 2).toString());
           jTextField4.setText(model.getValueAt(index, 3).toString()); 
        
    }

// display row values on keys click
private void jTable1KeyReleased(java.awt.event.KeyEvent evt) {                                    
       
        if(evt.getKeyCode() == KeyEvent.VK_UP || evt.getKeyCode() == KeyEvent.VK_DOWN){
            
            index = jTable1.getSelectedRow();
           jTextField1.setText(model.getValueAt(index, 0).toString());
           jTextField2.setText(model.getValueAt(index, 1).toString());
           jTextField3.setText(model.getValueAt(index, 2).toString());
           jTextField4.setText(model.getValueAt(index, 3).toString()); 
            
        }
        
    }


OutPut:

display jtable data using direction keys in java

VB.Net KeyCode

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VB NET Using Key Code

vb.net KeyCode
In This VB.Net Tutorial  We Will See How To Use KeyCode On KeyDown To Check Which Key Is Pressed Like ENTER or SPACE In Visual Basic.Net Programming Language And Visual Studio Editor.


Project Source Code:

Public Class Form_Key_Code

    Private Sub Form_Key_Code_KeyDown(sender As Object, e As KeyEventArgs) Handles MyBase.KeyDown

        Dim code As String
        code = e.KeyCode

        Select Case code

            Case 32
                Label1.Text = "Spacebar"

            Case 13
                Label1.Text = "Enter"

        End Select

    End Sub
End Class
      
///////////////OUTPUT:

vbnet keycode enter

vbnet keycode spacebar

C# KeyChar, KeyCode

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How To Use Key Char And Key Code In C#

C# Key Char & Key Code


In This C# Tutorial  We Will See How To Use KeyChar And KeyCode To Check Which Key Is Pressed ENTER or SPACE, SHIFT... In CSharp Programming Language And Visual  Studio Editor.


Project Source Code:


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

 namespace WindowsFormsApplication1
{
    public partial class Csharp_keycode_keychar : Form
    {
        public Csharp_keycode_keychar()
        {
            InitializeComponent();
        }

 // keycode
        private void Csharp_keycode_keychar_KeyDown(object sender, KeyEventArgs e)
        {

             if ((e.KeyCode == Keys.Enter) && e.Control)
                label1.Text = "CONTROL + ENTER";
            else
                label1.Text = "/////";

         }

 // keychar
        private void Csharp_keycode_keychar_KeyPress(object sender, KeyPressEventArgs e)
        {
            
            if(e.KeyChar == (char)Keys.Space)
                label1.Text = "spacebar";
            else
                label1.Text = "/////";
           
        }
    }
}



// OUTPUT :

c# enter key keychar



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