gre/dde.h

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/*****************************************************************************
 *
 * GRE interface to the MicroImages Windows Shell Namespace Extention
 *
 * $Log: dde.h_v $
 * Revision 1.7  2005/10/27 12:59:31  mju
 * Use gre namespace instead of legacy type.
 *
 * Revision 1.6  2005/06/08 13:40:36  dwilliss
 * added two new command enum values
 *
 * Revision 1.5  2005/05/02 15:16:20  dwilliss
 * Changed the message to allow multiple objects
 *
 * Revision 1.4  2005/04/29 22:24:31  dwilliss
 * *** empty log message ***
 *
 * Revision 1.3  2005/04/28 17:57:19  dwilliss
 * *** empty log message ***
 *
 * Revision 1.2  2005/04/27 20:30:43  dwilliss
 * *** empty log message ***
 *
 * Revision 1.1  2005/04/27 20:29:08  dwilliss
 * Initial revision
 *
 ****************************************************************************/

#ifndef INC_GRE_DDE_H
#define INC_GRE_DDE_H

#ifndef INC_MI32_STDDEFNS_H
#include <mi32/stddefns.h>
#endif

#ifndef INC_GRE_SYSTEM_H
#include <gre/system.h>
#endif

namespace GRE {
#ifdef WIN32
   //! Initialize the interface between GRE and the Windows Shell Namespace Extension.
   //! Windows only (obviously)
   void WindowsNamespaceInterfaceInit();

   //! Shutdown the interface between GRE and the Windows Shell Namespace Extension.
   //! Windows only (obviously)
   void WindowsNamespaceInterfaceStop();

   void WindowsNamespaceInterfaceSetOpenFunc (
      ERRVALUE (*pFunc)(GRE::SYSTEM::AUTOOPEN, const RVC::OBJITEMLIST&)
      );

   //! A structure passed from the Windows Shell Namespace Extention to GRE
   //! via a DDE message.  This structure cannot contain any pointers, as
   //! they would not work from one process' address space to another's
   struct DDEMSG {
      enum COMMAND {
         COMMAND_Open = 0,
         COMMAND_Edit = 1,
         COMMAND_QueryOpen = 2,
         COMMAND_QueryEdit = 3
         };

      UINT32 version;      //!< Version of this structure (currently 1)
      COMMAND cmd;         //!< One of the DDEMSG::COMMAND values
      PTRINT hWnd;         //!< HWND associated with the group.   
      UINT32 NumObjects;
      UINT32 Offsets[1];   //!< Offsets from start of DDEMSG to each object, which will be encoded as a null-terminated unicode string (OBJITEM::GetCombinedPath()).
      };

#endif
   } // End of GRE namespace



#endif  // INC_GRE_GRECOM_H

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