C# WPF着陆事件延迟

很简单，我在WPF4中的UserControl上接收着陆事件时遇到了无法接受的延迟。我对事件堆栈的理解是PreviewTouchDown首先被发送，但仍然需要大约300ms-500ms的时间。代码如下

<UserControl x:Class="MyButton"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         mc:Ignorable="d" 
         d:DesignHeight="300" 
         d:DesignWidth="300" 
         Stylus.IsPressAndHoldEnabled="False"
         PreviewTouchDown="ProcessPreviewTouchDown"
         PreviewTouchUp="ProcessPreviewTouchUp">
</UserControl>

这当然会删除UI，但不会导致速度明显提高，即使TABLET\u DISABLE\u PRESSANDHOLD本应如此，但我怀疑这与向XAML添加手写笔相同。IsPressAndHoldEnabled=False

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如果有人对如何消除这种延迟有任何建议，我将不胜感激。

您在哪里添加了这些代码？

num = GlobalAddAtom(atom);
if (num == 0L)
{
   return false;
}
if (enable)
{
   return (RemoveProp(hWnd, atom).ToInt64() == 1L);
}
else
{
   int TABLET_DISABLE_PRESSANDHOLD        = 0x00000001;
   int TABLET_DISABLE_PENTAPFEEDBACK      = 0x00000008;
   int TABLET_DISABLE_PENBARRELFEEDBACK   = 0x00000010;
   int TABLET_DISABLE_TOUCHUIFORCEOFF     = 0x00000200;
   int TABLET_DISABLE_FLICKS              = 0x00010000;

   int dwHwndTabletProperty = 0x1010019 |
                    TABLET_DISABLE_PRESSANDHOLD |
                    TABLET_DISABLE_PENTAPFEEDBACK | 
                    TABLET_DISABLE_TOUCHUIFORCEOFF |
                    TABLET_DISABLE_PENBARRELFEEDBACK |
                    TABLET_DISABLE_FLICKS;

   return (SetProp(hWnd, atom, new IntPtr(dwHwndTabletProperty)) == 1);
}