基本功能概述：
- 程序运行后驻留系统托盘，左键呼出，右键退出。后续可加右键菜单。
- 注册系统案件WIN+F10,呼出程序。
- 重写系统消息，最小化和关闭按钮隐藏程序
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices; public enum HotkeyModifiers
{
Alt = ,
Control = ,
Shift = ,
Win =
} public class MyForm:Form
{
[DllImport ("user32.dll")]
private static extern bool RegisterHotKey (IntPtr hWnd, int id, int modifiers, Keys vk); [DllImport ("user32.dll")]
private static extern bool UnregisterHotKey (IntPtr hWnd, int id); const int WM_HOTKEY = 0x312;
const int WM_SYSCOMMAND = 0X112;
const int SC_MAXMIZE = 0xf030;
const int SC_MINMIZE = 0xf020;
const int SC_CLOSE = 0xf060; public MyForm ()
{
NotifyIcon ni = new NotifyIcon (){ Icon = this.Icon, Visible = true };
//RegisterHotKey
bool bOK = RegisterHotKey (this.Handle, , (int)HotkeyModifiers.Win, Keys.F10); this.Closing += delegate {
UnregisterHotKey (this.Handle, );
}; ni.MouseDown += (sender, e) => {
if (e.Button == MouseButtons.Left) {
this.Activate ();
this.Visible = true;
}
if (e.Button == MouseButtons.Right) {
if (DialogResult.Yes==MessageBox.Show("Quit? Realy?","Quit",MessageBoxButtons.YesNo)) {
this.Close ();
}
}
};
} //WndProc
protected override void WndProc (ref Message m)
{
switch (m.Msg) {
case WM_SYSCOMMAND:
int code = m.WParam.ToInt32 ();
if (code == SC_CLOSE || code == SC_MINMIZE) {
this.Visible = false;
return;//Must Prevent WndProc
}
break; //others, such as SC_MAXMIZE must in WndProc.
case WM_HOTKEY:
this.Text = DateTime.Now.ToString ();
this.Activate ();
this.Visible = true;
break;
}
base.WndProc (ref m);
}
} public class MyClass
{
public static void Main ()
{
MyForm form = new MyForm ();
Application.Run (form);
}
}