How do I query if a binded key is unpressed and how long it has been pressed?

Thanks. I will try to open a ticket.

Can you give me a simple example how to detect key press time with minimal coding?

Thanks.

But I have another question about the code. Why is keybinding event doing this:

    @SubscribeEvent
    @SideOnly(Side.CLIENT)
    public void onKeyInput(InputEvent.KeyInputEvent event) {
        if (!FMLClientHandler.instance().isGUIOpen(GuiChat.class)) {
            if (org.lwjgl.input.Keyboard.isKeyDown(keys.getKeyCode())) {
                myMod.PACKET_HANDLER.sendToServer(new KeyBindingPressedMessage());
            }
        }
    }

    public static class KeyBindingPressedMessageHandler implements IMessageHandler<KeyBindingPressedMessage, IMessage> {
        @Override
        public IMessage onMessage(KeyBindingPressedMessage message, MessageContext context) {
            EntityPlayerMP entity = context.getServerHandler().player;
            entity.getServerWorld().addScheduledTask(() -> {

 instead of just calling the handler directly in onKeyInput? Can I just call the handler directly? If not, how do I pass on more arguments to onMessage?

So I basically added a new int "dummy" in KeyBindingPressedMessage, and set it in onKeyInput, like this: 

	public void onKeyInput(InputEvent.KeyInputEvent event) {
		if (!FMLClientHandler.instance().isGUIOpen(GuiChat.class)) {
			int dummy = keys.getKeyCode();
			if (org.lwjgl.input.Keyboard.isKeyDown(dummy)) {
				KeyBindingPressedMessage message = new KeyBindingPressedMessage();
				message.key_processed = dummy;
				jadens_sword.PACKET_HANDLER.sendToServer(message);
			}
		}
	}

	public static class KeyBindingPressedMessage implements IMessage {
		public int dummy;
		
		@Override
		public void toBytes(io.netty.buffer.ByteBuf buf) {
		}

		@Override
		public void fromBytes(io.netty.buffer.ByteBuf buf) {
		}
	}
}

But when I access it here:

	public static class KeyBindingPressedMessageHandler implements IMessageHandler<KeyBindingPressedMessage, IMessage> {
		@Override
		public IMessage onMessage(KeyBindingPressedMessage message, MessageContext context) {
			EntityPlayerMP entity = context.getServerHandler().player;
			entity.getServerWorld().addScheduledTask(() -> {
				World world = entity.world;
				int key = message.dummy;

its value is always 0. What did I do wrong?

 Oops, wrong code.

This is the "real" code:

	public void onKeyInput(InputEvent.KeyInputEvent event) {
		if (!FMLClientHandler.instance().isGUIOpen(GuiChat.class)) {
			int dummy = keys.getKeyCode();
			if (org.lwjgl.input.Keyboard.isKeyDown(dummy)) {
				KeyBindingPressedMessage message = new KeyBindingPressedMessage();
				message.dummy = dummy;
				jadens_sword.PACKET_HANDLER.sendToServer(message);
			}
		}
	}

	public static class KeyBindingPressedMessage implements IMessage {
		public int dummy;
		
		@Override
		public void toBytes(io.netty.buffer.ByteBuf buf) {
		}

		@Override
		public void fromBytes(io.netty.buffer.ByteBuf buf) {
		}
	}
}

Oh, that's beyond me then. Do I need to implement toBytes and fromBytes to read/write from buf to dummy? When I create a new KeyBindingPressedMessage do I need to allocate memory for a buffer or can I use dummy as a 4 byte buffer?

Wow, I just love sample code! Thanks! That did it.