Java屏蔽Windows按键代码

用到的包有

platform.jar

import com.sun.jna.platform.win32.Kernel32;
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinDef.HMODULE;
import com.sun.jna.platform.win32.WinDef.LRESULT;
import com.sun.jna.platform.win32.WinDef.WPARAM;
import com.sun.jna.platform.win32.WinUser.HHOOK;
import com.sun.jna.platform.win32.WinUser.KBDLLHOOKSTRUCT;
import com.sun.jna.platform.win32.WinUser.LowLevelKeyboardProc;
import com.sun.jna.platform.win32.WinUser.MSG;

public class Test {

private static HHOOK hhk;
private static LowLevelKeyboardProc keyboardHook;
private static User32 lib;

public static void blockWindowsKey() {
if (isWindows()) {
new Thread(new Runnable() {

@Override
public void run() {
lib = User32.INSTANCE;
HMODULE hMod = Kernel32.INSTANCE.GetModuleHandle(null);
keyboardHook = new LowLevelKeyboardProc() {

public LRESULT callback(int nCode, WPARAM wParam, KBDLLHOOKSTRUCT info) {
if (nCode >= 0) {
switch (info.vkCode) {
case 0x5B:
case 0x5C:
return new LRESULT(1);
default: //do nothing
}
}
return lib.CallNextHookEx(hhk, nCode, wParam, info.getPointer());
}
};
hhk = lib.SetWindowsHookEx(13, keyboardHook, hMod, 0);
int result;
MSG msg = new MSG();
while ((result = lib.GetMessage(msg, null, 0, 0)) != 0) {
if (result == -1) {
break;
} else {
lib.TranslateMessage(msg);
lib.DispatchMessage(msg);
}
}
lib.UnhookWindowsHookEx(hhk);
}
}).start();
}
}

public static void unblockWindowsKey() {
if (isWindows() && lib != null) {
lib.UnhookWindowsHookEx(hhk);
}
}

public static boolean isWindows() {
String os = System.getProperty("os.name").toLowerCase();
return (os.indexOf("win") >= 0);
}
//测试
public static void main(String[] args) {
unblockWindowsKey();
}

}