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    <p>Late answer but hopefully helpful :)</p> <p>You can using JNA, it's a cakewalk!!</p> <ol> <li>get JNA (jna.jar)</li> <li><p>create your own mapping for User32 (User32.dll) in the form</p> <pre> public interface User32 extends StdCallLibrary { User32 INSTANCE = (User32) Native.loadLibrary("User32", User32.class, Options.UNICODE_OPTIONS); // dwWakeMask Constants public static final int QS_ALLEVENTS = 0x04BF; public static final int QS_ALLINPUT = 0x04FF; public static final int QS_ALLPOSTMESSAGE = 0x0100; public static final int QS_HOTKEY = 0x0080; public static final int QS_INPUT = 0x407; public static final int QS_KEY = 0x0001; public static final int QS_MOUSE = 0x0006; public static final int QS_MOUSEBUTTON = 0x0004; public static final int QS_MOUSEMOVE = 0x0002; public static final int QS_PAINT = 0x0020; public static final int QS_POSTMESSAGE = 0x0008; public static final int QS_RAWINPUT = 0x0400; public static final int QS_SENDMESSAGE = 0x0040; public static final int QS_TIMER = 0x0010; public static final int INFINITE = 0xFFFFFFFF; /* DWORD WINAPI MsgWaitForMultipleObjects( __in DWORD nCount, __in const HANDLE *pHandles, __in BOOL bWaitAll, __in DWORD dwMilliseconds, __in DWORD dwWakeMask );*/ int MsgWaitForMultipleObjects(int nCount, Pointer pHandles, boolean bWaitAll, int dwMilliSeconds, int dwWakeMask); /* fsModifiers vaues */ public static final int MOD_ALT = 0x0001; public static final int MOD_CONTROL = 0x0002; public static final int MOD_NOREPEAT = 0x4000; public static final int MOD_SHIFT = 0x0004; public static final int MOD_WIN = 0x0008; /* BOOL WINAPI RegisterHotKey( __in_opt HWND hWnd, __in int id, __in UINT fsModifiers, __in UINT vk ); */ boolean RegisterHotKey(Pointer hWnd, int id, int fsModifiers, int vk); } </pre></li> <li><p>Just check out the following pages to get a clear idea of how things work under the hood: </p></li> </ol> <p>h**p://msdn.microsoft.com/en-us/library/ms646309%28VS.85%29.aspx</p> <p>h**p://msdn.microsoft.com/en-us/library/ms684242%28VS.85%29.aspx</p> <ol> <li>Check this page to see what are the key constants you can register a callback for</li> </ol> <p>h**p://msdn.microsoft.com/en-us/library/dd375731%28v=VS.85%29.aspx</p> <ol> <li>Create a test program like this:</li> </ol> <pre> User32 user32 = User32.INSTANCE; boolean res = user32.RegisterHotKey(Pointer.NULL, 9999, User32.MOD_ALT | User32.MOD_CONTROL, WINUSER.VK_LEFT); if(!res) System.out.println("Couldn't register hotkey"); System.out.println("Starting and waiting"); user32.MsgWaitForMultipleObjects(0, Pointer.NULL, true, User32.INFINITE, User32.QS_HOTKEY); System.out.println("Ending"); </pre> <p>User32.INFINITE is an undocumented constant with value 0xFFFFFFFF</p> <p>Sorry about the http links renamed into h**p :) Stackoverflow rules Stefano</p>
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