刚开始学习进程知识，请教如何把一个进程变成当前应用程序！

Question

请问如何把一个进程编程当前应用程序。比如要把进程为“QQ.exe”的进程变成当前的应用程序。我应该如何实现。另外如何判断进程里面是否存在“QQ.exe”进程，刚学进程的相关知识，问题不能很好的表达好，请见谅！
谢谢~！

Answer 1

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;namespace LogAnalyze
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            bool createdNew;            System.Threading.Mutex m = new System.Threading.Mutex(true, "YourAppName", out createdNew);            if (!createdNew)
            {
                // see if we can find the other app and Bring it to front
                IntPtr hWnd = FindWindow(null,"LogAnalyze");// get HWND                if (hWnd != IntPtr.Zero)
                {
                    Program.WINDOWPLACEMENT placement = new Program.WINDOWPLACEMENT();
                    placement.length = Marshal.SizeOf(placement);                    GetWindowPlacement(hWnd, ref placement);                    if (placement.showCmd != SW_RESTORE)
                    {
                        placement.showCmd = SW_RESTORE;                        SetWindowPlacement(hWnd, ref placement);
                        SetForegroundWindow(hWnd);
                    }
                }                return;
            }            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);            Application.Run(new LogAnalyze());//你要运行的主窗体                        // keep the mutex reference alive until the normal termination of the program
            GC.KeepAlive(m);
        }        private const int SW_NORMAL = 1; // see WinUser.h for definitions
        private const int SW_RESTORE = 9;        [DllImport("User32", EntryPoint = "FindWindow")]
        static extern IntPtr FindWindow(string className, string windowName);        [DllImport("User32", EntryPoint = "SendMessage")]
        private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);        [DllImport("User32", EntryPoint = "SetForegroundWindow")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);        [DllImport("User32", EntryPoint = "SetWindowPlacement")]
        private static extern bool SetWindowPlacement(IntPtr hWnd, [In] ref WINDOWPLACEMENT lpwndpl);        [DllImport("User32", EntryPoint = "GetWindowPlacement")]
        private static extern bool GetWindowPlacement(IntPtr hWnd, [In] ref WINDOWPLACEMENT lpwndpl);        private struct POINTAPI
        {
            public int x;
            public int y;
        }        private struct RECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }        private struct WINDOWPLACEMENT
        {
            public int length;
            public int flags;
            public int showCmd;
            public POINTAPI ptMinPosition;
            public POINTAPI ptMaxPosition;
            public RECT rcNormalPosition;
        }
              
    }
}看看这个对你是否有帮助