Not getting all window messages from IMessageFilter?

[johnf]

Trying to get a see windows messages using IMessageFilter interface however
it does not seem to get all window messages. Specifically I am looking for
the WM_POWERBROADCAST. I override wndproc which shows the msg successfully
but nothing shows up when using IMessageFilter. Am i misunderstanding
something? Here is sample code:
public class MyFilter : IMessageFilter
{

const int WM_POWERBROADCAST = 0x0218;
public bool PreFilterMessage(ref Message m)
{
if m.Msg == WM_POWERBROADCAST)
{
Console.WriteLine("Power Broadcast recieved.");
}
return false;
}
}
class MainForm : Form
{

public MainForm() //MainForm's constructor
{
}
public static void Main()
{

Application.AddMessageFilter(new MyFilter());
Application.Run(new MainForm());
}
}

 

[johnf]

Hi Pete,
Thanks for the response, however ultimately I am incorporating this into a
service, so it wont be possible to override wndproc. According to this doc
(about halfway down)
http://msdn.microsoft.com/en-us/library/ms704147(VS.85).aspx
It suggests for console / service apps it is possible to get these msgs.
-John

 

[johnf]

Actually the link is for Mobile PC's (laptops?) not CE. The topic covers
Power Management in Windows XP and Vista. Thanks for the input Pete, if
anyone has anything else, greatly appreciated...