ListView控件的KeyUp误差控制键 [英] ListView KeyUp Error for the Control Key

问题描述

ListView.KeyDown ＆LT;按Ctrl＆GT; 事件显示以下内容：

ListView.KeyDown <Ctrl> event shows the following:

e   KeyData = LButton | ShiftKey | Control
    base    {KeyData = LButton | ShiftKey | Control}
        Alt false   bool
        Control true    bool
        Handled false   bool
        KeyCode LButton | ShiftKey
        KeyData LButton | ShiftKey | Control
        KeyValue    17
        Modifiers   
        Shift   false   bool
        SuppressKeyPress    false   bool

我不喜欢的事实，＆LT;＆Shift键GT; 被显示出来，但控制键被显示出来。
在ListView.KeyUp ＆LT;按Ctrl＆GT; 事件显示以下内容：

I don't like the fact that the <ShiftKey> is showing up but the Control key is showing up. On ListView.KeyUp <Ctrl> event shows the following:

-       e   {KeyData = LButton | ShiftKey}
+       base    {KeyData = LButton | ShiftKey}
        Alt false   bool
        Control false   bool
        Handled false   bool
        KeyCode LButton | ShiftKey
        KeyData LButton | ShiftKey
        KeyValue    17
        Modifiers   None
        Shift   false   bool
        SuppressKeyPress    false

是什么给了它的怪异。看在网上，看是否有此错误的任何实例，但可以找到什么。我已经试过了关键preVIEW设置为true托管形式无济于事的。

What gives it's weird. Look over the web to see if there are any examples of this error but could find nothing. I have tried setting the KeyPreview to true on the hosting form to no avail.

任何投入是值得欢迎的。

Any input is welcome.

推荐答案

这里没有错误时，你只需pressed并释放Ctrl键。调试器只是没有在键枚举转换为字符串非常好。它是由具有[​​旗]属性所以它试图在该值的各个比特映射到一个关键该枚举confuzzled

There's no error here, you simply pressed and released the Ctrl key. The debugger just isn't very good at converting the Keys enum to a string. It is confuzzled by that enum having the [Flags] attribute so it tries to map the individual bits in the value to a Key.

所以的KeyDown =（Keys.Control | Keys.ControlKey）= 0x20011。这调试轧液到结果地址0x20000 =控制结果
0x00010 = Shift键结果
0x00001 = LButton。

So KeyDown = (Keys.Control | Keys.ControlKey) = 0x20011. Which the debugger mangles to
0x20000 = Control
0x00010 = ShiftKey
0x00001 = LButton.

和KEYUP =（Keys.ControlKey）= 0x00011。这调试轧液到结果
0x00010 = Shift键结果
0x00001 = LButton。

And Keyup = (Keys.ControlKey) = 0x00011. Which the debugger mangles to
0x00010 = ShiftKey
0x00001 = LButton.

或者换句话说，无视调试器会告诉你。

Or in other words, ignore what the debugger tells you.

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