No entry for the Equals key in the System.Windows.Input.Key enum?

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开发者_StackOverflow can't see an entry in the System.Windows.Input.Key enum for the equals ('=') key.

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

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?

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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.

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:

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".

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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:

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;
    }
}

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

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No entry for the Equals key in the System.Windows.Input.Key

This isn't true.

You use Key.OemPlus for the +/= key

You use Key.OemMinus for the -/_ key

This pattern stays the same for other keys that are dual use, it wouldn't make sense to have two key codes for the same key.

You use a Key Modifier like Shift to determine what the user intended.

As an example of what I mean by this, traditionally when you press Key.OemPlus we assume you are pressing =, We don't count it as + unless you are holding Shift down.