using System;using System.Runtime.InteropServices;namespace JKLib
{
/**//// /// 一个程序只能启动一次实现
/// public class SingleInstance { [DllImport("user32.dll")] private static extern IntPtr FindWindow(string lpClassName,string lpWindowName); [DllImport("user32.dll")] private static extern bool SetForegroundWindow(IntPtr hWnd); [DllImport("user32.dll")] private static extern bool ShowWindowAsync(IntPtr hWnd,int nCmdShow); [DllImport("user32.dll")] private static extern bool IsIconic(IntPtr hWnd); /**//// /// 显示窗体命令值 /// private const int SW_RESTORE &＃61; 9; /**//// /// 窗体名称 /// private string WinTitle; /**//// /// 一个程序只能启动一次实现 /// /// public SingleInstance(string _WinTitle) { WinTitle &＃61; _WinTitle; } private IntPtr hWnd &＃61; (System.IntPtr)null; /**//// /// 是否只有一个窗口 /// public bool IsSingleInstance { get { hWnd &＃61; FindWindow(null,WinTitle); return hWnd &＃61;&＃61; (System.IntPtr)null; } } /**//// /// 使当前程序进程处于活动状态 /// public void RaiseOtherProcess() { if(hWnd &＃61;&＃61; (System.IntPtr)null) return; else { if (IsIconic(hWnd)) { ShowWindowAsync(hWnd,SW_RESTORE); } SetForegroundWindow(hWnd); return; } } }
}原文网址: http://free56.cn/post/3.html
京公网安备 11010802041100号