Java获取窗口鼠标坐标以及键盘按键
Java中的鼠标和键盘事件
使用MouseListener借口处理鼠标事件
鼠标事件有 种 按下鼠标键 释放鼠标键 点击鼠标键 鼠标进入和鼠标退出
鼠标事件类型是MouseEvent 主要方法有
getX() getY() 获取鼠标位置
getModifiers() 获取鼠标左键或者右键
getClickCount() 获取鼠标被点击的次数
getSource() 获取鼠标发生的事件源
事件源获得监视器的方法是addMouseListener() 移去监视器的方法是removeMouseListener()
处理事件源发生的时间的事件的接口是MouseListener 接口中有如下的方法
mousePressed(MouseEvent) 负责处理鼠标按下事件
mouseReleased(MouseEvent) 负责处理鼠标释放事件
mouseEntered(MouseEvent) 负责处理鼠标进入容器事件
mouseExited(MouseEvent) 负责处理鼠标离开事件
mouseClicked(MouseEvent) 负责处理点击事件
使用MouseMotionListener接口处理鼠标事件
事件源发生的鼠标事件有 种 拖动鼠标和鼠标移动
鼠标事件的类型是MouseEvent
事件源获得监视器的方法是addMouseMotionListener()
处理事件源发生的事件的接口是MouseMotionListener 接口中有如下的方法
mouseDragged() 负责处理鼠标拖动事件
mouseMoved() 负责处理鼠标移动事件
控制鼠标的指针形状
setCursor(Cursor getPreddfinedCursor(Cursor 鼠标形状定义)) 鼠标形状定义见（书 P ）
键盘事件
键盘事件源使用addKeyListener 方法获得监视器
键盘事件的接口是KeyListener 接口中有 个方法
public void keyPressed(KeyEvent e) 按下键盘按键
public void keyReleased(KeyEvent e) 释放键盘按键
public void keyTypde(KeyEvent e) 按下又释放键盘按键
package mouseenvent;
import java awt *;
import javax swing *;
import java awt event *;
public class Mouse extends JFrame implements MouseListener{
JPanel jp = new JPanel();
JLabel statu *** ar = new JLabel();
static final long serialVersionUID= ;
public Mouse(){
setTitle( Mouse Event );
getContentPane() add(jp BorderLayout CENTER);
getContentPane() add(statu *** ar BorderLayout SOUTH);
jp addMouseListener(this);
}
public static void main(String[] args){
Mouse frame = new Mouse();
frame setSize( );
frame setVisible(true);
frame setDefaultCloseOperation(JFrame EXIT_ON_CLOSE);
}
public void mousePressed(MouseEvent e){
int x = e getX();
int y = e getY();
String s = 鼠标在坐标 + ( +x+ +y+ ) + 处按下 ;
statu *** ar setText(s);
}
public void mouseReleased(MouseEvent e){
int x = e getX();
int y = e getY();
String s = 鼠标在坐标 + ( +x+ +y+ ) + 处释放 ;
statu *** ar setText(s);
}
public void mouseClicked(MouseEvent e){
int x = e getX();
int y = e getY();
String s = 鼠标在坐标 + ( +x+ +y+ ) + 处点击 ;
statu *** ar setText(s);
}
public void mouseEntered(MouseEvent e){
int x = e getX();
int y = e getY();
String s = 鼠标在坐标 + ( +x+ +y+ ) + 处进入 ;
statu *** ar setText(s);
}
public void mouseExited(MouseEvent e){
int x = e getX();
int y = e getY();
String s = 鼠标在坐标 + ( +x+ +y+ ) + 处离开 ;
statu *** ar setText(s);
}
}
package mouseenvent;
import java awt *;
import javax swing *;
import java awt event *;
public class MouseMotion extends JFrame implements MouseMotionListener{
static final long serialVersionUID= ;
JLabel bar = new JLabel();
JTextField text = new JTextField();
public MouseMotion(){
setTitle( Mouse Event );
getContentPane() add(text BorderLayout NORTH);
getContentPane() add(bar BorderLayout SOUTH);
addMouseMotionListener(this);
}
public void mousePressed(MouseEvent e){
int x = e getX();
int y = e getY();
String s = x = +x+ y = +y;
bar setText(s);
text setText(s);
}
public void mouseDragged(MouseEvent e){
int x = e getX();
int y = e getY();
String s = x = +x+ y = +y;
bar setText(s);
text setText(s);
}
public void mouseMoved(MouseEvent e){
int x = e getX();
int y = e getY();
String s = x = +x+ y = +y;
bar setText(s);
text setText(s);
}
public static void main(String args[])throws Exception{
MouseMotion mouse = new MouseMotion();
mouse setSize( );
mouse setVisible(true);
mouse setDefaultCloseOperation(JFrame EXIT_ON_CLOSE);
}
}
package mouseenvent;
import java awt event *;
import javax swing *;
import java awt *;
public class Key extends JFrame implements KeyListener{
JLabel bar ;
public Key(){
bar = new JLabel();
getContentPane() add(bar BorderLayout CENTER);
addKeyListener(this);
}
public void keyPressed(KeyEvent e){
char c = e getKeyChar();
String s = c+ ;
bar setText(s);
}
public void keyReleased(KeyEvent e){
char c = e getKeyChar();
}
public void keyTyped(KeyEvent e){
char c = e getKeyChar();
}
public static void main(String args[])throws Exception{
Key key = new Key();
key setSize( );
key setVisible(true);
key setDefaultCloseOperation(JFrame DISPOSE_ON_CLOSE);
}
lishixinzhi/Article/program/Java/hx/201311/25830
