因为项目的原因今天又搞起了Windows service,由于项目的需求要在windows下show一个messageBox出来.我记得以前曾经搞过,拍胸脯说Ok,这个好办.

我记得windows service call一下win32的MessageBox就搞定了吧

DllImport一下,咦,没有反应.囧

查了一下才知道,这个方式在visit之后就不好使了.我们可以通过WTTSendMessage来发送消息.

安装国际惯例我们包一层供别人更好的使用

1public class MessageBox
2{
3    private static IntPtr WTS_CURRENT_SERVER_HANDLE = IntPtr.Zero;
4    private static int WTS_CURRENT_SESSION = WTSGetActiveConsoleSessionId();
5    public MessageBoxResult Show(string title, string text, MessageBoxButtons messageBoxButtons)
6    {
7         var style = (int)messageBoxButtons;
8        int resp = 0;
9
10         var result = WTSSendMessage(WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, title, title.Length, text,
11                                     text.Length, style, 0, out resp, true);
12        int error = Marshal.GetLastWin32Error();
13         Marshal.ThrowExceptionForHR(error);
14        return (MessageBoxResult)resp;
15     }
16
17     [DllImport("kernel32.dll")]
18    static extern int WTSGetActiveConsoleSessionId();
19
20     [DllImport("wtsapi32.dll", SetLastError = true)]
21    static extern bool WTSSendMessage(
22                 IntPtr hServer,
23                 [MarshalAs(UnmanagedType.I4)] int SessionId,
24                 String pTitle,
25                 [MarshalAs(UnmanagedType.U4)] int TitleLength,
26                 String pMessage,
27                 [MarshalAs(UnmanagedType.U4)] int MessageLength,
28                 [MarshalAs(UnmanagedType.U4)] int Style,
29                 [MarshalAs(UnmanagedType.U4)] int Timeout,
30                 [MarshalAs(UnmanagedType.U4)] out int pResponse,
31                bool bWait);
32
33}
34
35public enum MessageBoxResult
36{
37     None,
38     OK,
39     Cancel,
40     Abort,
41     Retry,
42     Ignore,
43     Yes,
44     No
45}
46
47public enum MessageBoxButtons
48{
49     OK,
50     OKCancel,
51     AbortRetryIgnore,
52     YesNoCancel,
53     YesNo,
54     RetryCancel
55}
56
57

使用方法和普通的messagebox没有多少区别,Show方法可以根据自己的喜好重载一下咯,我就不糊代码了!

参考:

http://blogs.msdn.com/yvesdolc/archive/2009/08/20/do-you-still-use-the-messagebox-api-in-your-windows-service.aspx

http://msdn.microsoft.com/en-us/library/aa383842(VS.85).aspx

http://www.pinvoke.net/default.aspx/wtsapi32/WTSSendMessage.html