This file contains information on the implementation of the direct play
and direct play lobby features. 

Most methods and APIs are not implemented at this point. Examine the code
to see what has been implemented.  Stay tuned for some information here once
there is more implementation (and I figure out what the heck I'm doing).

The files are include/dplay.h, include/dplobby.h, multimedia/dplobby.c and multimedia/dplay.c. 
The .c files will be moved to appropriate dll directories at some later time.

I think I can safely say that any application which requires direct play
or direct play lobby will not work at this point. Priority will be to get
examples from the sdk running. Once they're at least partially working, I can
get down to trying to get some of the games working.

A small issue will be the fact that DirectX 6.1(ie. DirectPlay4) introduces a layer of functionality
inside the DP objects which provide guaranteed protocol delivery. This is
even if the native protocol, IPX or modem for instance, doesn't guarantee it. I'm going to leave
this kind of implementation to as close to the end as possible. However, I
will implement an abstraction layer, where possible, for this functionality. 
It will do nothing to start, but will require only the implementation of the 
guaranteness to give final implementation.


TODO:
  - (done) Header files for DP4 and DPL3 
  - (done) Add stub functions for all DP4 and DPL3 interfaces
  - (done) Correct naming of the parameters for DP3 and DPL2
  - (done) Seperate out DP and DPL into multiple .c files
  - (done) Allow CoCreateInstance to create the new interfaces
  - (started)Implement mutual exclusion on object data for existing functions
  - (done) Create and move to correct dll directories (dplay and dplayx)
  - (done) Implement dplay in terms of dplayx
  - (done) Need a better internal implementation for the objects which scales and 
    preferably doesn't involve casting structures. Solution is a crude ctor/dtor
    which can actually trap some runtime errors.
  - (done) More generic initialization and destruction helper methods based off
    the chosen internal implementation. Solution is a crude ctor/dtor.
  - Use only windows routines where an equivalent is available
  - (done) Fix wine dplay.h and dplobby.h header files to allow apps to create the ansi versions
  - (started) Port some WineLib test programs using sdk programs (both C and C++ progs)  
  - (done) Implement a lib main for the dplayx dll (required for RunApplication, etc.)
  - Figure out how to share the global memory correctly
  - Ensure that all dll stubs are present and the ordinals are correct
  - (started)Implementation of functionality
  - Addition of DirectX 7.0 functionality for direct play (try to catch that moving train)
  - bug fixes ;)
  - Implement some WineLib test programs using sdk programs as a skeleton
  - Change all RegEnumKey calls to RegEnumKeyEx and change enumeration pattern to allow
    error handling.

Programs to make work:
  - lserver.exe (from sdk)
  - override.exe (from sdk)
  - dpchat.exe (from sdk)
  - duel.exe (from sdk)
  - dplaunch.exe (from sdk)

Next API to implement on a per program basis:
  override.exe
  - fixme:dplay:DirectPlayCreate Modem binding not supported yet
  - DirectPlay3AImpl_InitializeConnection
  - DirectPlay2AImpl_Open
  - ?

  dplaunch.exe
  - IDirectPlayLobby2AImpl_CreateCompoundAddress
  - IDirectPlayLobbyAImpl_RunApplication
  - ?

  lserver.exe
  - IDirectPlayLobby2WImpl_Connect 
  - fixme:dplay:DirectPlayCreate Modem binding not supported yet
  - IDirectPlay3WImpl_CreatePlayer 
  - IDirectPlay3WImpl_CreateGroup
  - IDirectPlay3WImpl_SetGroupData
  - IDirectPlay3WImpl_Send
  - ?
 
  bellhop.exe
  - DirectPlay3AImpl_EnumConnections (lobby applications)
  - ?

  dpslots.exe
  - IDirectPlayLobby3AImpl_ConnectEx
  - ?

Other TODO:

- look at problem with parsing the resource file for dplaunch. wrc problem?
- I should be getting the dialog box to come up for dpchat when something is selected
Call OLE32.7: CoCreateInstance(010017f0,00000000,00000001,010017e0,010094b4) ret=01002f38 fs=0237
Call ADVAPI32.188: RegOpenKeyExA(80000002,5e08dd90 "Software\\Microsoft\\DirectPlay\\Compatibility",00000000,00020019,40e7f49c) ret=5e0b6e5a fs=0237

   
Peter Hunnisett  -  hunnise@nortelnetworks.com