谢谢
~

//--------------------------------------------------------------------------------
// Windows API
//--------------------------------------------------------------------------------
[DllImport("USER32.DLL", CharSet=CharSet.Auto)]
private extern static bool DeleteMenu(IntPtr hMenu, int uPosition, int uFlags);

[DllImport("USER32.DLL", CharSet=CharSet.Auto)]
private extern static IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);

//--------------------------------------------------------------------------------
// 定数の宣言
//--------------------------------------------------------------------------------
private const int SC_CLOSE = 0xF060;
private const int MF_BYCOMMAND = 0x0000;

private void button1_Click(object sender, System.EventArgs e)
{
this.Close();
}

public static void DisableCloseButtom(System.IntPtr argWindowHandle)
{
IntPtr hMenu = GetSystemMenu(argWindowHandle, false);
if ( !hMenu.Equals(IntPtr.Zero))
{
DeleteMenu( hMenu, SC_CLOSE, MF_BYCOMMAND);

// 区切り線を削除
DeleteMenu( hMenu, 0, MF_BYCOMMAND);
}
}

能屏蔽关闭叉叉,并且把它变成灰色,调试过,没问题

[此贴子已经被作者于2006-1-17 9:44:07编辑过]