实现快捷键Alt+F12显示/隐藏程序功能

想实现注册类似于ctr+alt+shit+A+Z的方法很简单,将RegisterHotKey的第3个参数设置为KeyModifiers.Alt|KeyModifiers.Control|KeyModifiers.Shift，
第4个参数设置为Keys.B|Keys.Z。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Threading;
namespace rgHotKeys
{
public enum KeyModifiers
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
Windows = 8
}
public partial class Form1 : Form
{
[DllImport("user32.dll",SetLastError=true)]
public static extern bool RegisterHotKey(IntPtr hwnd,int id,int fsModifiers,int vk);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool UnregisterHotKey(
IntPtr hWnd, // handle to window
int id // hot key identifier
);
private int id;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
id = Thread.CurrentThread.GetHashCode();
RegisterHotKey(this.Handle, id, (int)KeyModifiers.Alt, (int)Keys.F12);
}
protected override void WndProc(ref Message m)
{
const int WM_HOTKEY = 0x0312;
switch (m.Msg)
{
case WM_HOTKEY:
if(id==(int)m.WParam)
{
System.Windows.Forms.MessageBox.Show ("你好！");
}
break;
}
base.WndProc(ref m);
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
UnregisterHotKey(this.Handle, 10001);
}
}
}

二、

想实现注册类似于ctr+alt+shit+A+Z的方法很简单,将RegisterHotKey的第3个参数设置为KeyModifiers.Alt|KeyModifiers.Control|KeyModifiers.Shift，
第4个参数设置为Keys.B|Keys.Z。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Threading;
namespace rgHotKeys
{
public enum KeyModifiers
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
Windows = 8
}
public partial class Form1 : Form
{
[DllImport("user32.dll",SetLastError=true)]
public static extern bool RegisterHotKey(IntPtr hwnd,int id,int fsModifiers,int vk);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool UnregisterHotKey(
IntPtr hWnd, // handle to window
int id // hot key identifier
);
private int id;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
id = Thread.CurrentThread.GetHashCode();
RegisterHotKey(this.Handle, id, (int)KeyModifiers.Alt, (int)Keys.F12);
}
protected override void WndProc(ref Message m)
{
const int WM_HOTKEY = 0x0312;
switch (m.Msg)
{
case WM_HOTKEY:
if(id==(int)m.WParam)
{
System.Windows.Forms.MessageBox.Show ("你好！");
}
break;
}
base.WndProc(ref m);
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
UnregisterHotKey(this.Handle, 10001);
}
}
}