SysTray changes in Windows 7 Beta compared to Vista

Hello all,

I noticed that the system tray didn't seem to behave the same way in  
Windows 7 Beta as it does in Vista, so I whipped up a *box plugin to  
let me see what was going on. Basically, what the plugin does is that  
it adds an icon to the system tray, allows you to change the tray  
version (i.e. NIM_SETVERSION) on the fly using bro@ms (the *box  
equivalent to LiteStep !bangs), and then monitors the messages that  
get forwarded to it from the system tray when you e.g. move the mouse  
over or click on its tray icon. To monitor the messages of the  
Explorer system tray I disabled xoblite's built-in system tray,  
disabled the hiding of the Explorer taskbar etc at startup, and then  
ran xoblite on top of Explorer. And lo and behold, Windows 7 does  
indeed behave quite different compared to Windows Vista!!!

To avoid formatting issues, here's the table in both PNG and TXT format:

http://xoblite.net/TrayMessages.png
http://xoblite.net/TrayMessages.txt

Windows XP behaves the same way as Windows Vista when version=0 and  
version=3, and for obvious reasons does not support version=4.
Windows 2000 behaves the same way as Windows XP/Vista when version=0  
and version=3, except that is does not forward X clicks.

If you're interested, the *box (=xoblite/bbLean/boxCore/bb4win/etc)  
plugin is available at http://xoblite.net/TraySnooper.dll , if you  
want the source code please send me an email, asking politely ;)

BR//Karl -> qwilk

----------

> On 14 jan 2009, at 01.25, Neil Santos wrote:
>
>> Has anybody tried Windows 7 yet?  I'm anxious to find out how much
>> work it would take to make shell reps work flawlessly on it.
>
> Well, I think I've found one change in Windows 7 Beta compared to  
> Windows Vista:
>
> As you know, a wallpaper is (usually) set by a call to  
> SystemParametersInfo using the SPI_SETDESKWALLPAPER input parameter  
> (see http://msdn.microsoft.com/en-us/library/ms724947.aspx ).  
> Starting with the Windows 7 Beta, a classic old-school desktop  
> window ("DesktopBackgroundClass") no longer seems to be "notified"  
> of wallpaper changes in the good old fashion way, i.e. by triggering  
> a regular WM_PAINT repainting of the window. However, following a  
> call to SystemParametersInfo, a WM_SETTINGCHANGE message is  
> broadcasted to all top-level windows to notify them of the change,  
> and this can be used to trigger the repainting of the classic  
> desktop window. Here's an abbreviated example:
>
> ----------
>
> 	case WM_PAINT:
> 	{
> 		PAINTSTRUCT ps;
> 		HDC hdc = BeginPaint(hwnd, &ps);
> 		PaintDesktop(hdc);
> 		EndPaint(hwnd, &ps);
> 	}
>
> 	case WM_SETTINGCHANGE:
> 	{
> 		if (wParam == SPI_SETDESKWALLPAPER)
> 		{
> 			if (operatingSystemVersion >= OSVERSION_WIN7)  
> InvalidateRect(hDesktopWnd, NULL, false);
> 		}
> 	}
>
> ----------
>
> BR//Karl -> qwilk
>
>
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