Set Structured Field Service Condition


3270	5250	VT
Yes	No	No

The Set Structured Field Service Condition function passes the Query Reply data provided by the client application.

Note:

The client must call the Set Structured Field Service Condition function before invoking the Start Read SF function or the Write SF function.

The client sends the following message to set the condition.

PostMessage( hServerWnd,
             WM_DDE_POKE,
             hClientWnd,
             PackDDElParam(WM_DDE_POKE,
             (hData, aSFCOND) );

where:

hData

Identifies a handle to a Windows global memory object containing:

typedef struct tagSFSERVCOND
{
  unsigned char  poke[(sizeof(DDEPOKE)-1)];
  unsigned short uBufferLength;             /* Buffer size of Read_SF
  unsigned short uQRLength;                 /* Length of Query Reply dat
  unsigned char  szQueryReply[1];            /* Query Reply data
} SFSERVCOND;
 
typedef union tagDDE_SFSERVCOND
{
  DDEPOKE     DDEpoke;
  SFSERVCOND  DDEcond;
} DDE_SFSERVCOND, *lpDDE_SFSERVCOND;

aSFCOND

Identifies the item for the Set Structured Field Service Condition function.