[Ohrrpgce] SVN: jay/3270 gfx_directx backend, v1.6a; and backend interfaces, update. Added messag

[Jay Tennant]

> From: Mike Caron <caron.mike at gmail.com>
> Sent: Thursday, December 31, 2009 3:29 PM
> 
> subversion at HamsterRepublic.com wrote:
> > jay
> > 2009-12-31 13:25:13 -0800 (Thu, 31 Dec 2009)
> > 801
> > gfx_directx backend, v1.6a; and backend interfaces, update. Added message system to gfx backend, though I don't know how to declare void pointers in freebasic (gfx.new.bi, gfx.new_x.bi). Also added another callback sent at backend initialization: DefGfxMessageProc(). This function will handle all messages that the backend doesn't understand. It is implemented by the engine.
> 
> As far as pointers go, 'Any' is equivalent to 'void'. So, "foo as Any 
> ptr". Obviously, cannot be dereferenced without a cast of some kind:
> 
> cptr(foo, integer ptr)

Ah. I'll get to work on fixing the interfaces.

> > gfx_msg.h defines the different messages that may be sent. More can be added, but they include support for all backend's different functionality (including fb's bit depth, border, sdl's zoom, etc.).
> > 
> > "Get" style messages are allowed and defined, too.
> > 
> > Also added command line options functionality back into the gfx_directx--now that a messaging system is in place, these commands are parsed and sent to the new interfaces.
> 
> I still don't know that I find the idea of messages attractive. How 
> close are these to Windows messages? Is there a queue? Do you need to 
> maintain a message pump? Can you Send Messages, or just Post them?

It's a blocking send call, much like window's SendMessage(). I suppose we could build a message queue, especially if the backends work on their own thread. But a blocking call is probably better (and easier).

> > ---
> > U   wip/gfx.new.bi
> > U   wip/gfx.new.h
> > U   wip/gfx.new_x.bi
> > U   wip/gfx_directx/source/gfx_directx.cpp
> > U   wip/gfx_directx/source/gfx_directx.new.cpp
> > U   wip/gfx_directx/source/gfx_directx.new.h
> > U   wip/gfx_directx.dll
> > A   wip/gfx_msg.h
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> > http://lists.motherhamster.org/listinfo.cgi/ohrrpgce-motherhamster.org
> 
> -- 
> Mike
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