Source code of Windows XP (NT5)
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/*****************************************************************************\
* *
* dde.h - Dynamic Data Exchange structures and definitions *
* *
* Copyright (c) 1992, Microsoft Corp. All rights reserved *
* *
\*****************************************************************************/
#ifndef _INC_DDE
#define _INC_DDE
#ifndef RC_INVOKED
#pragma pack(1) /* Assume byte packing throughout */
#endif /* RC_INVOKED */
#ifdef __cplusplus
extern "C" { /* Assume C declarations for C++ */
#endif /* __cplusplus */
/* DDE window messages */
#define WM_DDE_FIRST 0x03E0
#define WM_DDE_INITIATE (WM_DDE_FIRST)
#define WM_DDE_TERMINATE (WM_DDE_FIRST+1)
#define WM_DDE_ADVISE (WM_DDE_FIRST+2)
#define WM_DDE_UNADVISE (WM_DDE_FIRST+3)
#define WM_DDE_ACK (WM_DDE_FIRST+4)
#define WM_DDE_DATA (WM_DDE_FIRST+5)
#define WM_DDE_REQUEST (WM_DDE_FIRST+6)
#define WM_DDE_POKE (WM_DDE_FIRST+7)
#define WM_DDE_EXECUTE (WM_DDE_FIRST+8)
#define WM_DDE_LAST (WM_DDE_FIRST+8)
/****************************************************************************\
* DDEACK structure
*
* Structure of wStatus (LOWORD(lParam)) in WM_DDE_ACK message
* sent in response to a WM_DDE_DATA, WM_DDE_REQUEST, WM_DDE_POKE,
* WM_DDE_ADVISE, or WM_DDE_UNADVISE message.
*
\****************************************************************************/
typedef struct tagDDEACK
{
WORD bAppReturnCode:8,
reserved:6,
fBusy:1,
fAck:1;
} DDEACK;
/****************************************************************************\
* DDEADVISE structure
*
* WM_DDE_ADVISE parameter structure for hOptions (LOWORD(lParam))
*
\****************************************************************************/
typedef struct tagDDEADVISE
{
WORD reserved:14,
fDeferUpd:1,
fAckReq:1;
short cfFormat;
} DDEADVISE;
/****************************************************************************\
* DDEDATA structure
*
* WM_DDE_DATA parameter structure for hData (LOWORD(lParam)).
* The actual size of this structure depends on the size of
* the Value array.
*
\****************************************************************************/
typedef struct tagDDEDATA
{
WORD unused:12,
fResponse:1,
fRelease:1,
reserved:1,
fAckReq:1;
short cfFormat;
BYTE Value[1];
} DDEDATA;
/****************************************************************************\
* DDEPOKE structure
*
* WM_DDE_POKE parameter structure for hData (LOWORD(lParam)).
* The actual size of this structure depends on the size of
* the Value array.
*
\****************************************************************************/
typedef struct tagDDEPOKE
{
WORD unused:13, /* Earlier versions of DDE.H incorrectly */
/* 12 unused bits. */
fRelease:1,
fReserved:2;
short cfFormat;
BYTE Value[1]; /* This member was named rgb[1] in previous */
/* versions of DDE.H */
} DDEPOKE;
/****************************************************************************\
* The following typedef's were used in previous versions of the Windows SDK.
* They are still valid. The above typedef's define exactly the same structures
* as those below. The above typedef names are recommended, however, as they
* are more meaningful.
*
* Note that the DDEPOKE structure typedef'ed in earlier versions of DDE.H did
* not correctly define the bit positions.
\****************************************************************************/
typedef struct tagDDELN
{
WORD unused:13,
fRelease:1,
fDeferUpd:1,
fAckReq:1;
short cfFormat;
} DDELN;
typedef struct tagDDEUP
{
WORD unused:12,
fAck:1,
fRelease:1,
fReserved:1,
fAckReq:1;
short cfFormat;
BYTE rgb[1];
} DDEUP;
#ifdef __cplusplus
}
#endif /* __cplusplus */
#ifndef RC_INVOKED
#pragma pack()
#endif /* RC_INVOKED */
#endif /* _INC_DDE */