mouselistener

问题 I have the following: import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JLayeredPane; import javax.swing.JFrame; import javax.swing.BorderFactory; import java.awt.event.MouseListener; import java.awt.event.MouseEvent; import javax.swing.ImageIcon; import java.awt.GridLayout; import java.awt.Dimension; import java.awt.Color; import java.util.Random; class Cell extends JLayeredPane { private JLabel image1; private JLabel image2; private JLabel image3; private Random rand;

问题 I have the following: import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JLayeredPane; import javax.swing.JFrame; import javax.swing.BorderFactory; import java.awt.event.MouseListener; import java.awt.event.MouseEvent; import javax.swing.ImageIcon; import java.awt.GridLayout; import java.awt.Dimension; import java.awt.Color; import java.util.Random; class Cell extends JLayeredPane { private JLabel image1; private JLabel image2; private JLabel image3; private Random rand;

问题 I looked around for my problem, and i couldn't find an answer, so here I go: I have a JLayeredPane, and in there there are 2 JPanels. The deepest one ( furthest down ) has JButtons on there. The second one ( The one on top ) has a partially transparent background color ( although i don't think this should influence it ). Now when I hover over my JButtons ( which are behind the other JPanel ), they still fire events to the MouseListener I added to them. I don't know why... Why is this the case

问题 I looked around for my problem, and i couldn't find an answer, so here I go: I have a JLayeredPane, and in there there are 2 JPanels. The deepest one ( furthest down ) has JButtons on there. The second one ( The one on top ) has a partially transparent background color ( although i don't think this should influence it ). Now when I hover over my JButtons ( which are behind the other JPanel ), they still fire events to the MouseListener I added to them. I don't know why... Why is this the case

问题 i'm trying to set a delay when a button is pressed to set an imageicon to a certain image then set another delay so that another image would be set, all of this by single click. in other word : click a button->set image->delay->set another image. what i get in my code is the last state only "set another image". also i don't want to use use timers, i want to use delays. and here the part in my code i'm concerned about. btnNewButton.addMouseListener(new MouseAdapter() { @Override public void

问题 I'd like to implement click detection for multiple complex shapes on a single canvas element similar to that as realized by CanvasRenderingContext2D.isPointInPath() . Obligatory example code below. HTML: <canvas id="canvas"></canvas> <p>In path: <code id="result">false</code></p> JS: const canvas = document.getElementById('canvas'); const ctx = canvas.getContext('2d'); const result = document.getElementById('result'); ctx.beginPath(); ctx.moveTo(25, 25); ctx.lineTo(105, 25); ctx.lineTo(25,

问题 I'm a beginner in Java and this time I'm trying to learn more by finding code examples and editing them, for example from this website. I have a JFrame and each time it (or more precise the JPanel in it) is clicked on, a circle is drawn which will grow/expand outwards like a water ripple. Each circle starts with a certain radius and will be removed or redrawn when reaching a bigger radius (I chose radius "r" from 10 to 200). I have two programs for this which almost work but are missing

问题 I'm a beginner in Java and this time I'm trying to learn more by finding code examples and editing them, for example from this website. I have a JFrame and each time it (or more precise the JPanel in it) is clicked on, a circle is drawn which will grow/expand outwards like a water ripple. Each circle starts with a certain radius and will be removed or redrawn when reaching a bigger radius (I chose radius "r" from 10 to 200). I have two programs for this which almost work but are missing

问题 I'm doing a program in which there are 8 shapes contained in an array that will be displayed when you click the mouse. I am new to Java and not that familiar with event handlers and listeners. I am trying to make the shapes appear at the location the mouse is clicked at inside the frame yet I am having trouble since the constructor of each shape use 2 Points as its parameter. Here's an example from the code: import MyLibs.Circle; import MyLibs.Rectangle; import MyLibs.Shape; import java.awt

问题 got my first question and here it goes. I'm programming in java and making a litte program where I would like to track mouse event and make some statistics. For example number of right/left clicks, movements, time between doubleclicks, averages, etc. However I'm not able to make a little program and let in run in the background without any gui components in java. I'm not able to test my program and let it (for example) print lines in the console (in eclipse) for the events it gets from the