Update for unity's touchscript library. Disable windows 7 long touch event and visual feedback. Allow to catch press events immediately. Update the Win7TouchInput file with this code

Win7TouchInput

// Current Init Method with one call added
    private void init()
    {
        if (Application.platform != RuntimePlatform.WindowsPlayer) return;
    
        touchInputSize = Marshal.SizeOf(typeof(TOUCHINPUT));
    
        hMainWindow = GetForegroundWindow();
        RegisterTouchWindow(hMainWindow, 0);
    
        newWndProc = wndProc;
        newWndProcPtr = Marshal.GetFunctionPointerForDelegate(newWndProc);
        oldWndProcPtr = SetWindowLongPtr(hMainWindow, -4, newWndProcPtr);
    
        EnableTabletGestures(false); // Added this call
    
        isInitialized = true;
    }
 
    // NEW CODE (anywhere in the class)
#region removing windows long touch
 
    [DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
    public static extern short GlobalAddAtom(string atom);
 
    [DllImport("user32.dll", CharSet = CharSet.Unicode)]
    public static extern IntPtr RemoveProp(IntPtr hWnd, string atom);
 
    [DllImport("user32.dll", CharSet = CharSet.Unicode)]
    public static extern int SetProp(IntPtr hWnd, string atom, IntPtr handle);
 
    public bool EnableTabletGestures(bool enable)
    {
        var hWnd = this.hMainWindow;
 
        long num = 0L;
        string atom = "MicrosoftTabletPenServiceProperty";
        num = GlobalAddAtom(atom);
        if (num == 0L)
        {
            return false;
        }
        if (enable)
        {
            return (RemoveProp(hWnd, atom).ToInt64() == 1L);
        }
        int num2 = 0x1010019;
        return (SetProp(hWnd, atom, new IntPtr(num2)) == 1);
    }
 
#endregion