急急急！！！在java中如何实现，鼠标指向某处时，自动出现此处的提示，象windows那样的

ybudi 2001-12-10 09:40:05

急急急！！！在java中如何实现，鼠标指向某处时，自动出现此处的提示，象windows那样的。（浮动提示窗口）

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hicharlie 2001-12-10

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监听mouseEntered事件。代码如下。
this.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseEntered(MouseEvent e) {
this_mouseEntered(e);
}
});

tails 2001-12-10

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用swing的组件，setToolTipText(String)设置提示文字

rinehart 2001-12-10

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使用

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.border.*;
import javax.swing.colorchooser.*;
import javax.swing.filechooser.*;
import javax.accessibility.*;

import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.util.*;
import java.io.*;
import java.applet.*;
import java.net.*;

/**
* ToolTip Demo
*
* @version 1.2 07/22/99
* @author Jeff Dinkins
*/
public class ToolTipDemo extends DemoModule {

/**
* main method allows us to run as a standalone demo.
*/
public static void main(String[] args) {
ToolTipDemo demo = new ToolTipDemo(null);
demo.mainImpl();
}

/**
* ToolTipDemo Constructor
*/
public ToolTipDemo(SwingSet2 swingset) {
// Set the title for this demo, and an icon used to represent this
// demo inside the SwingSet2 app.
super(swingset, "ToolTipDemo", "toolbar/ToolTip.gif");

// Set the layout manager.
JPanel p = getDemoPanel();
p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
p.setBackground(Color.white);

// Create a Cow to put in the center of the panel.
Cow cow = new Cow();
cow.getAccessibleContext().setAccessibleName(getString("ToolTipDemo.accessible_cow"));

// Set the tooltip text. Note, for fun, we also set more tooltip text
// descriptions for the cow down below in the Cow.contains() method.
cow.setToolTipText(getString("ToolTipDemo.cow"));

// Add the cow midway down the panel
p.add(Box.createRigidArea(new Dimension(1, 150)));
p.add(cow);
}

class Cow extends JLabel {
Polygon cowgon = new Polygon();

public Cow() {
super(createImageIcon("tooltip/cow.gif", getString("ToolTipDemo.bessie")));
setAlignmentX(CENTER_ALIGNMENT);

// Set polygon points that define the outline of the cow.
cowgon.addPoint(3,20); cowgon.addPoint(44,4);
cowgon.addPoint(79,15); cowgon.addPoint(130,11);
cowgon.addPoint(252,5); cowgon.addPoint(181,17);
cowgon.addPoint(301,45); cowgon.addPoint(292,214);
cowgon.addPoint(269,209); cowgon.addPoint(266,142);
cowgon.addPoint(250,161); cowgon.addPoint(235,218);
cowgon.addPoint(203,206); cowgon.addPoint(215,137);
cowgon.addPoint(195,142); cowgon.addPoint(143,132);
cowgon.addPoint(133,189); cowgon.addPoint(160,200);
cowgon.addPoint(97,196); cowgon.addPoint(107,182);
cowgon.addPoint(118,185); cowgon.addPoint(110,144);
cowgon.addPoint(59,77); cowgon.addPoint(30,82);
cowgon.addPoint(30,35); cowgon.addPoint(15,36);
}

boolean moo = false;
boolean milk = false;
boolean tail = false;

// Use the contains method to set the tooltip text depending
// on where the mouse is over the cow.
public boolean contains(int x, int y) {
if(!cowgon.contains(new Point(x, y))) {
return false;
}

if((x > 30) && (x < 60) && (y > 60) && (y < 85)) {
if(!moo) {
setToolTipText("<html><center>" +
getString("ToolTipDemo.moo") + "</center></html>");
moo = true;
milk = false;
tail = false;
}
} else if((x > 150) && (x < 260) && (y > 90) && (y < 145)) {
if(!milk) {
setToolTipText("<html><center>" +
getString("ToolTipDemo.got_milk") + "</center></html>");
milk = true;
moo = false;
tail = false;
}
} else if((x > 280) && (x < 300) && (y > 20) && (y < 175)) {
if(!tail) {
setToolTipText("<html>" + getString("ToolTipDemo.tail") + "</html>");
tail = true;
moo = false;
milk = false;
}
} else if(moo || milk || tail) {
setToolTipText(getString("ToolTipDemo.tooltip_features"));
moo = false;
tail = false;
milk = false;
}

return true;
}
}

}

leolee 2001-12-10