jdesktoppane

问题 I'm creating a very simple program. I have created this classes : MainJframeClass, JDesktopPaneClass, JinternalFrameClass1 and JinternalFrameClass2. what ive done is that i instantiated my jdesktoppaneclass and named it desktoppane1 and i added it to the MainJframeclass. i have also instantiated the 2 jinternalframes and named it internal1 and internal2. Now, i have button in mainjframeclass that when i press, i add the internal1 to desktoppane1. what my problem now is how to add the

问题 I am creating a desktop application using the JDesktopPane. I'm almost complete, but when I press ctrl + alt + del , it leaves my application. How can I prevent that action? 回答1: Fact is Alt + Ctrl + Del never actually entering your application. Os traps Alt + Ctrl + Del before it is send to your application. So you can't trap it. 回答2: Alt + Ctrl + Del cannot be overridden. It is a security feature. 回答3: You cannot do that. The behavior of Alt + Ctrl + Del is enforced by the operating system,

问题 So once again we are in the process of converting our existing Java application that was using entirely Swing to using JavaFX. However, the application will not be using JavaFX entirely. This seems to be causing some issues with Alerts/Dialogs and modality. We are currently using Java 8u40. The main application is basically in a JFrame that has a Menu. The main content pane is JDesktopPane and clicking a MenuItem opens new JInternalFrames within the DeskopPane. Screens we are converting to

问题 How to change jdesktoppane background image in MDI (Multiple Documents interface) using java netbeans? Means I added the jdesktoppane to java MDI so now I want to change default background image of that jdesktoppane which I'm using in java MDI. Any easy way? Check attached snapshot link may be you will better understand my question what I want. http://i50.tinypic.com/iml1e9.jpg 回答1: +1 to MadProgrammers comment. Simply override JDesktopPane paintComponent(..) and call drawImage(Image img,int

问题 How do I add the JDesktopPane to JFrame using GridBagLayout and set its height and width. If I add JDesktopPane that contains JInternalFrame I don't get anything. But works well in case of GridLayout but the problem is I can't set my desired size in it as GridLayout splits equal space among each component added. 回答1: You will probably need to set the fill and weight attributes of the GridBagConstraints ... GridBagConstraints gbc = new GridBagConstraints(); gbc.weightx = 1; gbc.weighty = 1;

问题 I'm programming a short Paint program like and I'm trying to make an MDI architecture for it. To make that happen, I used JInternalFrame inside a JDesktopPane. Although I kind of obtain multiple frames, there are not really working properly. Basically, if I have 2 JInternalFrame I can draw only on the last one. The other one seems to be disabled. Here is a short video illustrating the problem. http://bit.ly/9ydiwM Here are some part of the code. Panneau.java public class Panneau extends

问题 I have a JDesktopPane and want to display JInternalFrames in a grid style without overlaying frames. The dymensions of the frames will vary so their location should be assigned dynamically. I could store the coordinates of the last placed frame but frames can be moved, minimized or closed.. Is their an easy way of placing internal frames in a tidy way? e.g., using a Layout? 回答1: Here's an example that may offer some guidance. It uses setLocation() and an offset. 回答2: The DesktopManager class

问题 I am trying to use DefaultDesktopManager (or a sub-class of this) to control the moves out of JInternalFrames from a desktop panel. I can prevent that a frame is moved out of its desktop pane, however, when I minimize the internal frame I get: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at javax.swing.RepaintManager.getVolatileOffscreenBuffer(RepaintManager.java:965) at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1398) at javax.swing

问题 I want to write a multiline text (3-4 lines is ok) on the bottom right corner of a JDesktopPane, how can I do this? The text is not fixed, it can change every time i start the swing application but once the application is started it remains the same, I don't need to update from the application. My first thought was to create an image, put it as background of the JDesktopPane and then write on it, but it doesn't seem a simple solution. Thanks for the help. 回答1: Combining the examples seen here

问题 I am using JDesktopPane and Jinternal Frame . I want to Lock Jinternal Frame inside JDesktopPane . Suggest which method or property needs to change. 回答1: You could Supply your own DesktopManager and manage the setFrameBounds method Implement your own internal frame & override the setBounds(x, y, width, height) , & maintain the position by supplying your own x, y values to the super call. 来源： https://stackoverflow.com/questions/11556044/how-to-lock-jinternal-frame-inside-jdesktoppane