1 /// <summary> 2 /// 0-關閉窗口 1-正常大小顯示 2最小化窗口 3-最大化窗口 3 /// </summary> 4 /// <param name="hwnd"></param> 5 /// <param name="nCmdShow"></param> 6 /// <returns></returns> 7 [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)] 8 public static extern int ShowWindow(IntPtr hwnd, int nCmdShow); 9 10 /// <summary> 11 /// 顯示程序 12 /// </summary> 13 /// <param name="hwnd">窗口句柄</param> 14 /// <param name="nCmdshow">0-關閉窗口 1-正常大小顯示 2最小化窗口 3-最大化窗口</param> 15 /// <returns></returns> 16 public int DisPlayWindow(IntPtr hwnd, int nCmdshow) 17 { 18 return ShowWindow(hwnd, nCmdshow); 19 } 20 21 public Process Run(string exeName) 22 { 23 return Process.Start(exeName); 24 } 25 26 IntPtr hWnd = IntPtr.Zero; 27 Process process=null; 28 bool IsMini = true; 29 int nCmdshow = 1; 30 private void button1_Click(object sender, EventArgs e) 31 { 32 //獲取句柄 33 if (process == null) 34 { 35 string exeName = Application.StartupPath + @"\CCD\CameraVision.exe"; 36 //創建啟動進程信息 37 process = Run(exeName); 38 } 39 else 40 { 41 if (IsMini) 42 { 43 DisPlayWindow(process.MainWindowHandle, 1); 44 IsMini = false; 45 } 46 else 47 { 48 DisPlayWindow(process.MainWindowHandle, 2); 49 IsMini = true; 50 } 51 } 52 }
這里實現的是點擊一個CCD按鈕，打開CCD窗口，再點擊CCD按鈕，隱藏CCD窗口，測試發現，句柄不能通過這種方式獲取：IntPtr hWnd=process.MainWindowHandle；而是直接用process.MainWindowHandle來表示這個進程的句柄，才可以實現。
這里還有一些其他的方法：
/// <summary> /// 0-隱藏窗口 1-正常大小顯示 /// </summary> /// <param name="hWnd"></param> /// <param name="_value"></param> /// <returns></returns> [DllImport("user32.dll", EntryPoint = "ShowWindow")] public static extern IntPtr ShowWindow(IntPtr hWnd, int _value); /// <summary> /// 獲取窗口句柄 /// </summary> /// <param name="lp1"></param> /// <param name="lp2"></param> /// <returns></returns> [DllImport("user32.dll", EntryPoint = "FindWindow")] public static extern IntPtr FindWindow(string lp1, string lp2); /// <summary> /// 獲取當前窗口的句柄 /// </summary> /// <returns></returns> [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)] public static extern IntPtr GetForegroundWindow();
/下面是通過進程的名字（CameraVision.exe）來獲取一個進程的句柄:
