全屏独占模式错误 [英] Full-Screen Exclusive mode error

问题描述

我想使用全屏模式，但当我按下F时，我仍然收到一个复杂的错误。我使用eclipse，它不显示任何错误，并且所有内容都被导入。如果有人擅长使用代码，你能告诉我我做错了什么吗？

代码片段：

  GraphicsEnviroment ge = GraphicsEnviroment.getLocalGraphicsEnviroment（）; 
 GraphicsDevice gd = ge.GetDefaultScreenDevice（）; 
 private boolean FullScreen = false; 
 JFrame frame = new JFrame（TITLE）; 
 
 //未显示：JFrame设置等，一个单独的类扩展KeyAdapter并运行keyPressed 
 
 public void keyPressed（KeyEvent e）{
 int key = e.getKeyCode（）; 
 if（key == KeyEvent.VK_F）{
 if（！FullScreen）{
 if（gd.isFullScreenSupported（））{
 frame.setUndecorated（true）; 
 gd.setFullScreenWindow（frame）; 
 FullScreen = true; 
} 
} else {
 frame.setUndecorated（false）; 
 gd.setFullScreenWindow（null）; 
 
 
 
 
 $ b 
错误：
 
 
 线程中的异常AWT-EventQueue-0java.awt.IllegalComponentStateException：该框架是可显示的。 
在java.awt.Frame.setUndecorated（Frame.java:923）
在com.Ward.src.main.Game.keyPressed（Game.java:167）
在com.Ward .src.main.KeyboardInput.keyPressed（KeyboardInput.java:15）$ b $在java.awt.Component.processKeyEvent（Component.java:6463）
在java.awt.Component.processEvent（Component.java （Component.java:4861）
 at java.awt.Component.dispatchEventImpl（Component.java:4861）
 at java.awt.Component.dispatchEvent（Component.java:4687）
 at java.awt。 KeyboardFocusManager.redispatchEvent（KeyboardFocusManager.java:1895）
 at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent（DefaultKeyboardFocusManager.java:762）
 at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent（DefaultKeyboardFocusManager.java:1027）
 at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions（DefaultKeyboardFocusManager.java:899）
 at java.awt.DefaultKeyboardFocusManager.dispatchEvent（DefaultKeyboardFocusManager.java:727）
 at java.awt.Component.dispatchEventImpl（Component .java：4731）
a java.awt.Component.dispatchEvent（Component.java:4687）$ b $在java.awt.EventQueue.dispatchEventImpl（EventQueue.java:735）
在java.awt.EventQueue.access $ 200（EventQueue。 java：103）
 at java.awt.EventQueue $ 3.run（EventQueue.java:694）$ b $ at java.awt.EventQueue $ 3.run（EventQueue.java:692）
 at java .security.AccessController.doPrivileged（本地方法）$ java.util.ProtectionDomain 
 $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）
 at java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:87）在java.awt.EventQueue 
 $ 4.run（EventQueue.java:708）$ b $在java.awt.EventQueue $ 4.run（EventQueue.java:706）
在java.security.AccessController .doPrivileged（本地方法）$ java.util.ProtectionDomain 
 $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）$ b $ at java.awt.EventQueue.dispatchEvent（EventQueue.java:705）
 at java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:242）
在java.awt.EventDispatchThread。 pumpEventsForFilter（EventDispatchThread.java:161）
 at java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:150）
 at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:146）
 （EventDispatchThread.java:138）
 at java.awt.EventDispatchThread.run（EventDispatchThread.java:91）
   gd 初始化为 GraphicsEnvironment。
     getGraphicsEnvironment.getDefaultScreenDevice（），然后才能使用它。  
 
 
 更新：现在OP已经解决了这个问题，还有另外一个问题。问题是在已经显示的窗口上更改 undecorated 属性。如果正在显示窗口，则不能更改 undecorated 属性，因为操作系统在显示时无法更改属性。我认为这可以通过省略对 setUndecorated 的调用来解决，全屏窗口不必非修饰（我认为）。
 
I want to use Full Screen mode, but I keep getting a complicated error when I press "F". I am using eclipse and it does not show any errors and everything is imported. If anyone is good with code, can you tell me what I did wrong?

A snippet of the code:
GraphicsEnviroment ge = GraphicsEnviroment.getLocalGraphicsEnviroment();
GraphicsDevice gd = ge.GetDefaultScreenDevice();
private boolean FullScreen = false;
JFrame frame = new JFrame(TITLE);

// Not shown: The JFrame is set up etc., and a separate class extends KeyAdapter and runs keyPressed

public void keyPressed(KeyEvent e){
    int key = e.getKeyCode();
        if(key == KeyEvent.VK_F){
        if(!FullScreen){
            if(gd.isFullScreenSupported()){
                frame.setUndecorated(true);
                gd.setFullScreenWindow(frame);
                                    FullScreen = true;
            }
        } else{
            frame.setUndecorated(false);
            gd.setFullScreenWindow(null);
        }
    }
The error:
Exception in thread "AWT-EventQueue-0" java.awt.IllegalComponentStateException: The frame is displayable.
at java.awt.Frame.setUndecorated(Frame.java:923)
at com.Ward.src.main.Game.keyPressed(Game.java:167)
at com.Ward.src.main.KeyboardInput.keyPressed(KeyboardInput.java:15)
at java.awt.Component.processKeyEvent(Component.java:6463)
at java.awt.Component.processEvent(Component.java:6282)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1895)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:762)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1027)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:899)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:727)
at java.awt.Component.dispatchEventImpl(Component.java:4731)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

解决方案
You need to initialize gd to GraphicsEnvironment.getGraphicsEnvironment.getDefaultScreenDevice() before you can use it. 

Update: Now that the OP has fixed this problem, there is another problem. The problem is changing the undecorated property on a window that is already being displayed. If the window is being displayed, the undecorated property can't be changed, because the operating system can't change the property while it is displayed. I think this can be fixed by omitting the call to setUndecorated, the full screen window doesn't have to be undecorated (I think).

                        
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