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[WPF疑难]如何禁用窗口上的关闭按钮2012-01-02 cnblogs zhouyinhui哈哈,主要是调用RemoveMenu这个API,所以没什么好说的,直接“干货”吧:

namespace VersatileMessageBoxLib{  using System;  using System.Windows.Interop;  using System.Runtime.InteropServices;  public class CloseButton  {    [DllImport("user32", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]    private static extern int GetSystemMenu(int hwnd, int revert);    [DllImport("user32", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]    private static extern int EnableMenuItem(int menu, int ideEnableItem, int enable);      private const int SC_CLOSE = 0xF060;    private const int MF_BYCOMMAND = 0x00000000;    private const int MF_GRAYED = 0x00000001;    private const int MF_ENABLED = 0x00000002;      private CloseButton()    {    }      public static void Disable(int handle)    {       // The return value specifies the previous state of the menu item      // (it is either MF_ENABLED or MF_GRAYED). 0xFFFFFFFF indicates that      // the menu item does not exist.      switch (EnableMenuItem(GetSystemMenu(handle, 0), SC_CLOSE, MF_BYCOMMAND | MF_GRAYED))      {        case MF_ENABLED:          break;        case MF_GRAYED:          break;        case -1:          throw new Exception("The Close menu item does not exist.");        default:          break;      }    }    }
在使用时:调用CloseButton.Disable(int handle)方法将窗口句柄传进去就可以了,如果是WPF窗口的化,可以使用 int handle = new WindowInteropHelper(window).Handle.ToInt32(); 来取得句柄,WindowForms窗口的句柄是可以直接取得的。

另外,如果你想Cancel窗口的关闭而不是禁用该按钮,那么可以参考我的这篇文章:[WPF疑难]Hide me! not close