출처 : http://rea1man.tistory.com/entry/C-Process%EC%9D%98-WindowState-%EC%A0%9C%EC%96%B4%ED%95%98%EA%B8%B0

출처2 : http://pinvoke.net/default.aspx/Structures/RECT.html

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Linq;

using System.Runtime.InteropServices;

using System.Threading;

using System.Windows.Forms;

namespace MLauncher

{

static class Program

{

/// <summary>

/// 해당 응용 프로그램의 주 진입점입니다.

/// </summary>

[STAThread]

static void Main()

{

//Application.EnableVisualStyles();

//Application.SetCompatibleTextRenderingDefault(false);

//Application.Run(new LauncherForm());

bool bnew;

Mutex mutex = new Mutex(true, "MLauncher", out bnew);

if (bnew)

{

Application.EnableVisualStyles();

Application.SetCompatibleTextRenderingDefault(false);

Application.Run(new LauncherForm());

mutex.ReleaseMutex();

}

else

{

//MessageBox.Show("프로그램이 실행중입니다.");

Process[] processes = Process.GetProcesses();

foreach (Process proc in processes)

{

if (proc.ProcessName.Equals("MLauncher"))

{

// 윈도우 핸들러

IntPtr procHandler = FindWindow(null, proc.MainWindowTitle);

//윈도우 크기 구하기

RECT r = new RECT();

GetWindowRect(procHandler, out r);

//화면 센터위치 구하기

int pWidth = Screen.PrimaryScreen.Bounds.Width;

int pHeight = Screen.PrimaryScreen.Bounds.Height;

MoveWindow(procHandler, pWidth/2 - r.Width /2, pHeight / 2 - r.Height / 2, r.Width, r.Height, true);

// 활성화

ShowWindow(procHandler, SW_SHOWNORMAL);

SetForegroundWindow(procHandler);

return;

}

}

Application.ExitThread();

Environment.Exit(0);

}

}

#region 프로세스 찾아서 띄우기

//http://rea1man.tistory.com/entry/C-Process%EC%9D%98-WindowState-%EC%A0%9C%EC%96%B4%ED%95%98%EA%B8%B0

[DllImport("User32", EntryPoint = "FindWindow")]

private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll")]

public static extern void SetForegroundWindow(IntPtr hWnd);

[DllImport("user32.dll")]

public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

[DllImport("User32.dll")]

public static extern bool MoveWindow(IntPtr handle, int x, int y, int width, int height, bool redraw);

[DllImport("user32.dll", SetLastError = true)]

static extern bool GetWindowRect(IntPtr hwnd, out RECT lpRect);

private const int SW_SHOWNORMAL = 1;

[StructLayout(LayoutKind.Sequential)]

public struct RECT

{

//http://pinvoke.net/default.aspx/Structures/RECT.html

public int Left, Top, Right, Bottom;

public RECT(int left, int top, int right, int bottom)

{

Left = left;

Top = top;

Right = right;

Bottom = bottom;

}

public RECT(System.Drawing.Rectangle r) : this(r.Left, r.Top, r.Right, r.Bottom) { }

public int X

{

get { return Left; }

set { Right -= (Left - value); Left = value; }

}

public int Y

{

get { return Top; }

set { Bottom -= (Top - value); Top = value; }

}

public int Height

{

get { return Bottom - Top; }

set { Bottom = value + Top; }

}

public int Width

{

get { return Right - Left; }

set { Right = value + Left; }

}

public System.Drawing.Point Location

{

get { return new System.Drawing.Point(Left, Top); }

set { X = value.X; Y = value.Y; }

}

public System.Drawing.Size Size

{

get { return new System.Drawing.Size(Width, Height); }

set { Width = value.Width; Height = value.Height; }

}

public static implicit operator System.Drawing.Rectangle(RECT r)

{

return new System.Drawing.Rectangle(r.Left, r.Top, r.Width, r.Height);

}

public static implicit operator RECT(System.Drawing.Rectangle r)

{

return new RECT(r);

}

public static bool operator ==(RECT r1, RECT r2)

{

return r1.Equals(r2);

}

public static bool operator !=(RECT r1, RECT r2)

{

return !r1.Equals(r2);

}

public bool Equals(RECT r)

{

return r.Left == Left && r.Top == Top && r.Right == Right && r.Bottom == Bottom;

}

public override bool Equals(object obj)

{

if (obj is RECT)

return Equals((RECT)obj);

else if (obj is System.Drawing.Rectangle)

return Equals(new RECT((System.Drawing.Rectangle)obj));

return false;

}

public override int GetHashCode()

{

return ((System.Drawing.Rectangle)this).GetHashCode();

}

public override string ToString()

{

return string.Format(System.Globalization.CultureInfo.CurrentCulture, "{{Left={0},Top={1},Right={2},Bottom={3}}}", Left, Top, Right, Bottom);

}

}

#endregion

}

}

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