Package com.sun.jna.platform.win32
Class User32Util.MessageLoopThread
- java.lang.Object
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- java.lang.Thread
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- com.sun.jna.platform.win32.User32Util.MessageLoopThread
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- All Implemented Interfaces:
java.lang.Runnable
- Enclosing class:
- User32Util
public static class User32Util.MessageLoopThread extends java.lang.ThreadHelper class, that runs a windows message loop as a seperate thread. This is intended to be used in conjunction with APIs, that need a spinning message loop. One example for this are the DDE functions, that can only be used if a message loop is present. To enable interaction with the mainloop the MessageLoopThread allows to dispatch callables into the mainloop and let these Callables be invoked on the message thread. This implies, that the Callables should block the loop as short as possible.
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Nested Class Summary
Nested Classes Modifier and Type Class Description classUser32Util.MessageLoopThread.Handler
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Constructor Summary
Constructors Constructor Description MessageLoopThread()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidexit()protected booleangetMessageFailed()The method is called from the thread, that run the message dispatcher, when the call toUser32.GetMessage(com.sun.jna.platform.win32.WinUser.MSG, com.sun.jna.platform.win32.WinDef.HWND, int, int)fails (returns-1).voidrun()<V> java.util.concurrent.Future<V>runAsync(java.util.concurrent.Callable<V> command)<V> VrunOnThread(java.util.concurrent.Callable<V> callable)-
Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield
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Method Detail
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run
public void run()
- Specified by:
runin interfacejava.lang.Runnable- Overrides:
runin classjava.lang.Thread
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runAsync
public <V> java.util.concurrent.Future<V> runAsync(java.util.concurrent.Callable<V> command)
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runOnThread
public <V> V runOnThread(java.util.concurrent.Callable<V> callable) throws java.lang.Exception- Throws:
java.lang.Exception
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exit
public void exit()
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getMessageFailed
protected boolean getMessageFailed()
The method is called from the thread, that run the message dispatcher, when the call toUser32.GetMessage(com.sun.jna.platform.win32.WinUser.MSG, com.sun.jna.platform.win32.WinDef.HWND, int, int)fails (returns-1).If the method returns
true, the MainLoop is exitted, if it returnsfalsethe mainloop is resumed.Default behavior: The error code is logged to the com.sun.jna.platform.win32.User32Util.MessageLoopThread logger and the main loop exists.
- Returns:
- true if MainLoop should exit, false it it should resume
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