On 19 May, shren wrote:
> I've been reading the FreeAmp source code to try and learn how to work
> with windows, and I've learned quite a bit. But there's one thing I can't
> figure out. How does the FreeAmp window keep from losing focus?
> DirectSound would stop sound output if the window lost focus - it doesn't.
> I can pull other windows over top of it, or minimize it, and it still
> keeps focus. I've read the source code and poked it with a couple of
> windows run-time tools and I still can't figure out how it does it.
>
> I hope I'm not polluting your list but I've been banging my head over
> this for weeks. The elegance of the source code is making me want to
> mangle my box, especially when my source code sits there and misbehaves.
The FreeAmp window does loose focus -- we take no special precautions
to prevent that from happening. Instead, we tell the directsound plugin
to use DSBCAPS_GLOBALFOCUS on line 476 in dsoundcardpmo.cpp in
io/dsound/win32/src:
DSBufferInfo.dwFlags = DSBCAPS_CTRLFREQUENCY |
DSBCAPS_CTRLPAN |
DSBCAPS_CTRLVOLUME |
DSBCAPS_GETCURRENTPOSITION2 |
DSBCAPS_GLOBALFOCUS;
This prevents DirectSound from stopping soundoutput when the window
loses focus.
--ruaok Freezerburn! All else is only icing. -- Soul Coughing
Robert Kaye -- [EMAIL PROTECTED] http://moon.eorbit.net/~robert
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