C#：从 KeyEventArgs 的 KeyData 获取正确的按键
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C#: Getting the correct keys pressed from KeyEventArgs' KeyData
提问by Andreas Grech
I am trapping a KeyDownevent and I need to be able to check whether the current keys pressed down are : Ctrl+ Shift+ M?
我诱捕KeyDown事件，我需要能够检查当前键是否按下为：Ctrl+ Shift+ M？
I know I need to use the e.KeyDatafrom the KeyEventArgs, the Keysenum and something with Enum Flags and bits but I'm not sure on how to check for the combination.
我知道我需要使用e.KeyDatafrom KeyEventArgs、Keysenum 和带有 Enum Flags 和位的东西，但我不确定如何检查组合。
采纳答案by Mike Dinescu
You need to use the Modifiersproperty of the KeyEventArgs class.
您需要使用KeyEventArgs 类的Modifiers属性。
Something like:
就像是：
//asumming e is of type KeyEventArgs (such as it is
// on a KeyDown event handler
// ..
bool ctrlShiftM; //will be true if the combination Ctrl + Shift + M is pressed, false otherwise
ctrlShiftM = ((e.KeyCode == Keys.M) && // test for M pressed
((e.Modifiers & Keys.Shift) != 0) && // test for Shift modifier
((e.Modifiers & Keys.Control) != 0)); // test for Ctrl modifier
if (ctrlShiftM == true)
{
Console.WriteLine("[Ctrl] + [Shift] + M was pressed");
}
回答by Eric
You can check using a technique similar to the following:
您可以使用类似于以下的技术进行检查：
if(Control.ModifierKeys == Keys.Control && Control.ModifierKeys == Keys.Shift)
This in combination with the normal key checks will give you the answer you seek.
这与正常的密钥检查相结合，将为您提供所需的答案。
回答by Ivandro Ismael Gomes Jao
I think its easiest to use this:
我认为最容易使用这个：
if(e.KeyData == (Keys.Control | Keys.G))
if(e.KeyData == (Keys.Control | Keys.G))
