Windows: Posting Native Events for Some Numpad Digits doen't work

[cypressious]

I'm writing an application that automatically converts some letters into special unicode characters (namely cyrillic letters). My approach is the following:

1. Catch and suppress original letter event
2. Press and Hold Alt by posting a native event
3. Type the decimal unicode value on the keypad by posting native events
4. Release Alt by posting a native event

When I do that, I get some unwanted extra events, but I can just catch and suppress those. However, when I send an event for the keypad digit 4 like so:

GlobalScreen.postNativeEvent(new NativeKeyEvent(
        NativeKeyEvent.NATIVE_KEY_PRESSED,
        System.currentTimeMillis(),
        NativeInputEvent.ALT_L_MASK,
        0,
        NativeKeyEvent.VC_KP_4,
        NativeKeyEvent.CHAR_UNDEFINED,
        NativeKeyEvent.KEY_LOCATION_NUMPAD))

I instead get an event for the left arrow key: NATIVE_KEY_PRESSED,keyCode=57419,keyText=Links,keyChar=Undefiniert,modifiers=Alt,keyLocation=KEY_LOCATION_STANDARD,rawCode=37 ("Links" is German for "Left arrow"). Similar things happen for the digits 5, 7 and 8.

Interestingly, the digits 0, 1, 2, 3, 6 and 9 work flawlessly.

I'm using version 2.0-20150624.234945-1.

[kwhat]

I think I found the problem, let me know if this build works:

https://oss.sonatype.org/content/repositories/snapshots/com/1stleg/jnativehook/2.0.SNAPSHOT/jnativehook-2.0.20151009.045322-17.jar

I didn't test anything besides the keys that weren't working, so please try as many as convent.

[kwhat]

I am pretty sure this has been resolved.