如何检查按下的键是否为功能键? [英] How to check the pressed key is a function key or not..?

问题描述

大家好，


如何检查按下的键是否为功能键?
请回复我.

在此先谢谢您..

Hai all,

How to check the pressed key is a function key or not..?

please reply me..

Thanks in advance..

推荐答案

您应该可以编写

You should be able to just write

void KeyUpEvent(object sender, KeyEventArgs e)
{
    if (e.KeyCode >= Keys.F1 && e.KeyCode <= Keys.F24)
    {
    }
}

public static bool IsFunctionKey(Keys k)
{
    return k >= Keys.F1 && k <= Keys.F24;
}

set KeyPreview = True

在InitializeComponent()或Form2_Load
中添加KeyUp事件，如下所示

set KeyPreview = True

add the KeyUp event as below in InitializeComponent() or Form2_Load

this.KeyUp += new System.Windows.Forms.KeyEventHandler(this.Form2_KeyUp);

在add
后面的代码中

in code behind add

private void Form2_KeyUp(object sender, KeyEventArgs e)
{
  if (e.KeyCode == Keys.F1 || e.KeyCode == Keys.F2 || e.KeyCode == Keys.F3 ||e.KeyCode == Keys.F4 ||
      e.KeyCode == Keys.F5 ||e.KeyCode == Keys.F6 ||e.KeyCode == Keys.F7 ||e.KeyCode == Keys.F8 ||
      e.KeyCode == Keys.F9 ||e.KeyCode == Keys.F10 ||e.KeyCode == Keys.F11 ||e.KeyCode == Keys.F12 )
     {
        MessageBox.Show(string.Format("Function Key {0} is pressed", e.KeyCode));
     }
}

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