C# - 操作外部程式視窗

以下程式碼，透過 button1 控制項 Click 事件執行 ShowWindow() 方法，控制外部程式視窗狀態：包含最大化、最小化、縮到工具列、復原 等動作。

控制外部程序，請參考 Process 類別。

程式碼：

using System;
using System.Diagnostics;
using System.Runtime.InteropServices; // to import Dll
using System.Windows.Forms;
 
namespace WordTest
{
public partial class Form1 : Form
{
public Form1( )
{
InitializeComponent( );
}
[DllImport( "User32" ) ]
private static extern int ShowWindow( int hwnd, int nCmdShow);
private enum CommandShow : int
{
SW_HIDE = 0,
SW_SHOWNORMAL = 1,
SW_NORMAL = 1,
SW_SHOWMINIMIZED = 2,
SW_SHOWMAXIMIZED = 3,
SW_MAXIMIZE = 3,
SW_SHOWNOACTIVATE = 4,
SW_SHOW = 5,
SW_MINIMIZE = 6,
SW_SHOWMINNOACTIVE = 7,
SW_SHOWNA = 8,
SW_RESTORE = 9,
SW_SHOWDEFAULT = 10,
SW_FORCEMINIMIZE = 11,
SW_MAX = 11
} ;
private static void button1_Click( object sender, EventArgs e)
{
Process[ ] p = Process.GetProcessesByName ( "notepad" );
if (p.Length > 0 )
{
int hwnd;
hwnd = p[ 0 ].MainWindowHandle.ToInt32 ( );
ShowWindow(hwnd, ( int ) CommandShow.SW_RESTORE );
}
}
}
}