c# 注册热键功能

using System.Runtime.InteropServices;

//注册热键的api

[DllImport("user32")]

public static extern bool RegisterHotKey(IntPtr hWnd,int id,uint control,Keys vk );

//解除注册热键的api

[DllImport("user32")]

public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

private void Form2_Load1(object sender, System.EventArgs e)

{

RegisterHotKey(this.Handle,888,2,Keys.A);

//handle:这个窗体的handle 888:这个热键的标志id 2:crtl鍵 A: a鍵

}

private void Form2_Load1(object sender, System.EventArgs e)

{

UnregisterHotKey(this.Handle,888);

//handle:这个窗体的handle 888:上面那个热键的标志id

}

protected override void WndProc(ref Message m)

{

switch (m.Msg)

{

case 0x0312: //这个是window消息定义的 注册的热键消息

if(m.WParam.ToString().Equals("888")) //如果是我们注册的那個热键

MessageBox.Show("你按了ctrl+a");

break;

}

base.WndProc (ref m);

}

None = 0,Alt = 1,crtl= 2, Shift = 4,Windows = 8

这是热键的定义 alt+crtl是3 直接相加就可以了

如果用sendmessagea这個api 就是

SendMessage(this.Handle,WM_SETHOTKEY,0x45a, 0)

//WM_SETHOTKEY 是 0x32

//0x45a 高字节是contrl键 低字节是a b c d 所以5a是z的ascii 4是alt 也就是alt+z