Microsoft Visual C# в задачах и примерах. 2-е изд

Часть 1 
90 
public static TaskDialogResult Show(string text, 
string instruction, string caption, 
TaskDialogButtons buttons, TaskDialogIcon icon) 
{ 
return ShowInternal(IntPtr.Zero, text, 
instruction, caption, buttons, icon); 
} 
} 
class OSVersion 
{ 
[StructLayout(LayoutKind.Sequential)] 
public struct OSVERSIONINFO 
{ 
public int dwOSVersionInfoSize; 
public int dwMajorVersion; 
public int dwMinorVersion; 
public int dwBuildNumber; 
public int dwPlatformId; 
[MarshalAs(UnmanagedType.ByValTStr, 
SizeConst = 128)] 
public string szCSDVersion; 
} 
// -------------------------------------- 
// OS Major.Minor 
// -------------------------------------- 
// Windows Server 2008 6.0
// Windows Vista 6.0 
// Windows Server 2003 R2 5.2 
// Windows Server 2003 5.2 
// Windows XP 5.1 
// Windows 2000 5.0
// -------------------------------------- 

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Примеры и задачи 
91 
[DllImport("kernel32.Dll")] 
public static extern short GetVersionEx 
(ref OSVERSIONINFO o); 
static public string GetOSVersionInfo() 
{ 
OSVERSIONINFO os = new OSVERSIONINFO(); 
os.dwOSVersionInfoSize = 
Marshal.SizeOf(typeof(OSVERSIONINFO)); 
GetVersionEx(ref os); 
return os.dwMajorVersion.ToString() + "." + 
os.dwMinorVersion.ToString(); 
} 
static public int GetMajorVersion() 
{ 
OSVERSIONINFO os = new OSVERSIONINFO(); 
os.dwOSVersionInfoSize = 
Marshal.SizeOf(typeof(OSVERSIONINFO)); 
GetVersionEx(ref os); 
return os.dwMajorVersion; 
} 
static public int GetMinorVersion() 
{ 
OSVERSIONINFO os = new OSVERSIONINFO(); 
os.dwOSVersionInfoSize = 
Marshal.SizeOf(typeof(OSVERSIONINFO)); 
GetVersionEx(ref os); 
return os.dwMinorVersion; 
} 
} 

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