Re: How to intercept a Win32 Message in WPF App?   

How did you resolve the problem as WPF uses <Window> element instead of Form? 
Available articles out there only show how to intercept using WinForm. I have 
the same problem and am stuck. Appreciate that you will share your experience 
on this issue.

"Fabio Galuppo" wrote:

> Hello Nick,
> 
> Thanks for this information!
> 
> However, I hope in the "future" releases of WPF somekind of support to 
> receive these system messages. We have a lot of system messages that Windows 
> OS notifies an application (WM_TIMECHANGE, WM_POWER, WM_DEVICECHANGE to name 
> a few) and I don´t see the need to use classes from System.Windows.Interop to 
> receive a system message. 
> 
> I understand this kind of feature must be Windows only (perhaps not 
> supported in WPF/E). However, suppose that I´m writing a "Battery Control UI" 
> app, I can do these only with Windows Forms (with MDX) or Win32 (with 
> DirectX), but I can´t with WPF without Interop AND hosting a control :(.
> 
> Thanks again,
> 
> -- 
> Fabio Galuppo
> fabiogaluppo.blogspot.com
> 
> 
> "Nick Kramer [MSFT]" wrote:
> 
> > No, there's no "native" WPF API for that.  Not every window message has a 
> > WPF equivalent -- there's a lot of window messages that have nothing to do 
> > with presentation and UI.  Often you can use Winforms's 
> > System.Windows.Forms.SystemInformation class, although I don't remember if 
> > wm_timechange is part of SystemInformation.
> > 
> > Of course, as you suggested, you can also use wndprocs and/or 
> > HwndSource.AddHook.
> > 
> > -- 
> > -Nick Kramer [MSFT]
> > http://blogs.msdn.com/nickkramer
> > 
> > This posting is provided "AS IS" with no warranties, and confers no rights.
> > Use of included script samples are subject to the terms specified at
> > http://www.microsoft.com/info/cpyright.htm
> > 
> > "Fabio Galuppo"  wrote in message 
> > news:7104AA85-36B4-49F8-BBF5-8C3C19E9D765@microsoft.com...
> > > I´m trying to intercept a Win32 Message (WM_TIMECHANGE) in my WPF
> > > Application. In Windows Forms this is a simple task, but I didn´t found 
> > > how
> > > can I do to receive a Win32 Message in WPF.
> > >
> > > My question is: How can I do to intercept "natively" a Win32 Message in 
> > > WPF
> > > Application (via code and/or XAML) ? Is possible (it means without any 
> > > kind
> > > of interop or host form) ?
> > >
> > > Thanks in advanced,
> > >
> > > -- 
> > > Fabio Galuppo
> > > fabiogaluppo.blogspot.com 
> > 
> > 
> >

date: Mon, 5 Nov 2007 12:55:00 -0800   author:   Jen