How to monitor which app window is the foreground window?

[Guest]

Hello, friends,

I need to write an assembly (C#.net 2.0 class library) to monitor all
applications
currently running in a PC. Especially, I need to know which window is the top
one, i.e., catch the event when a window becomes foreground window. Should
I use WndProc() to catch related window messages? (I don't want
to use timer).

Any reference paper or sample source code? Thanks a lot.

 

[Guest]

Hi,
This can be done through reflection.Find below the link which descrbies how
to monitor application.
http://www.codeproject.com/useritems/formscapture.asp

 

[Guest]

Hi,
It can be done through WIN32 function GetForeGroundWindow() also.Find below
a link which elaborates more on this :
http://www.pinvoke.net/default.aspx/user32/GetForegroundWindow.html
please do let me know whether relection or getforegroundwindow has helped you

 

[Guest]

I believe it works when we call GetForeGroundWindow() function. It will
return back the foreground window.

But, I don't want a person or timer get involved on when to call to this
function. This funcitons should be called when certain events are raised,
e.g., WM_ACTIVATE, WM_ACTIVATEAPP, etc., I guess...