uninformed musings on ddraw + bugs 2082 and 1347 + dib engine

[Stefan Dösinger]

There are a few more things to keep in mind:

-> The DIB engine would not be used to draw to windows or the NULL hwnd. It 
will be used to draw to device independent bitmaps only.

-> Some applications may *want* to draw to the screen outside their window. I 
think the dxdiag.exe app does so.

-> Some apps may use ddraw without a window at all

Can you confirm that the apps that show the black screen problem are broken in 
vista with aero on? This would be a strong indicator that the apps are doing 
something wrong(Keep in mind that QuickTime changes its behavior with 
winver=vista). All in all I think this is a hack that's not going to work 
well, although I did not think about it in detail yet.

First of all, I think we need to do a bit more testing. E.g. test what happens 
if the app is in fullscreen-exclusive mode and tries to open a regular GDI 
window. Is it visible? There's also a dx7 sdk sample which illustrates how a 
GDI window with ddraw works. It works on wine, but I never looked into it in 
detail.