在System.Windows.Input中没有相等键的条目。enum关键?

I'm trying to set an InputGesture on a RoutedUICommand, hooking it up to catch when the user presses Ctrl + =. I'm using a KeyGesture object, but I can't see an entry in the System.Windows.Input.Key enum for the equals ('=') key.

我试图在RoutedUICommand设置一个输入手势，当用户按Ctrl + =时，我将其挂起以捕获。我使用的是KeyGesture object，但是我看不到System.Windows.Input中的条目。等于('=')键的键枚举。

What I was expecting was to be able to do the following:

我所期望的是能够做到以下几点:

ZoomIn = new RoutedUICommand("Zoom In", "ZoomIn", typeof(Window),
    new InputGestureCollection { 
        new KeyGesture(Key.Equals, ModifierKeys.Control) 
    });

Can anyone point me in the right direction, please?

谁能告诉我正确的方向吗?

3 个解决方案

#1

As pointed out by ChrisF, I needed to engage my brain a little. For what it's worth, the value generated when handling the KeyDown event is Key.OemPlus.

正如ChrisF指出的，我需要让我的大脑参与进来。无论如何，在处理KeyDown事件时生成的值是Key.OemPlus。

Update:
One consequence of this is that, if you're doing the same same as me and you're going to use the command in a menu, you'll probably want to use the overloaded constructor for KeyGesture that takes a 3rd parameter of displayString. For example:

更新:这样做的一个后果是，如果您和我做的是一样的，并且您将在菜单中使用命令，那么您可能希望使用重载的构造函数来处理KeyGesture，它接受第三个displayString参数。例如:

new KeyGesture(Key.Equals, ModifierKeys.Control, "Ctrl+=")

Otherwise, you'll see the keyboard shortcut displayed as (in my case) "Ctrl+OemPlus", which isn't exactly desirable. Admittedly, the above still isn't great, but it's better than "OemPlus".

否则，您会看到键盘快捷键显示为(在我的例子中)"Ctrl+OemPlus"这并不是我们想要的。诚然，上面的内容并不好，但比“OemPlus”要好。

#2

One hack is to catch the shift keydown, and if the OemPlus keydown comes before the shift keyup, you have a "OemEqual". The code may look like this:

一种方法是捕捉shift键向下，如果OemPlus键向下在shift键向上之前出现，那么就有一个“OemEqual”。代码可能是这样的:

private bool shift = false;
private void Window_KeyDown(object sender, KeyEventArgs e)
{
    Key key = e.Key;
    switch (key) {
        case Key.LeftShift:  this.shift = true; break;
        case Key.RightShift: this.shift = true; break;
        case Key.C:         this.helper.Command(CMD.CLEAR); break;
        case Key.Enter:     this.helper.Command(CMD.EVAL); break;
        case Key.OemMinus:  this.helper.Operator(OP.SUB); break;
        case Key.OemPlus: 
            if (this.shift) {
                this.helper.Operator(OP.ADD);
            } else {
                this.helper.Command(CMD.EVAL);
            } break;
        case Key.OemPeriod: this.helper.Number(NumberPad.DECIMAL); break;
        case Key.D0:        this.helper.Number(NumberPad.ZERO); break;
        case Key.D1:        this.helper.Number(NumberPad.ONE); break;
        case Key.D2:        this.helper.Number(NumberPad.TWO); break;
        :
    }
}
private void Window_KeyUp(object sender, KeyEventArgs e)
{
    Key key = e.Key;
    switch (key) {
        case Key.LeftShift: this.shift = false; break;
        case Key.RightShift: this.shift = false; break;
    }
}

#3

if i test it, i get Key.Unknown as the key code, and PlatformKeyCode= = 0x000000bb (187)

如果我测试它，我就会得到密钥。未知作为密钥代码，而PlatformKeyCode= 0x000000bb (187)

#1