Window style problem with Steam

[Stefan Dösinger]

Hello!
I had a look at the "no keyboard problem" with Steam. A little reseach showed 
that Steam creates its main Window with WS_SYSMENU set but WS_CAPTION not 
set. MSDN says that WS_CAPTION must be set if WS_SYSMENU is used:

WS_SYSMENU 
	Creates a window that has a window menu on its title bar. The WS_CAPTION 	
style must also be specified.

(from 
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/WindowsUserInterface/Windowing/windows/WindowReference/WindowStyles.asp)

If I check for this case in WIN_CreateWindowEx and set WS_CAPTION, the Window 
is controlled by KWM and I can type in the Steam window. But KWM draws the 
normal Window boarder and it overlaps the rest of the Window and confuses the 
mouse. Furthermore the menu of  the systray applet has a Caption.

The solution I've found is to set the WS_EX_APPWINDOW flag in cs->dwExStyle. 
In this case Steam behaves as I'd expect it. But is this a correct solution?

Any suggestions?

Stefan