DDEACK info Overview Group

The DDEACK structure contains status flags that a DDE application passes to its partner as part of the WM_DDE_ACK message. The flags provide details about the application’s response to the messages WM_DDE_DATA, WM_DDE_POKE, WM_DDE_EXECUTE, WM_DDE_ADVISE, WM_DDE_UNADVISE, and WM_DDE_REQUEST.

typedef struct { // ddeack 

    unsigned short bAppReturnCode:8, 

    reserved:6, 

    fBusy:1, 

    fAck:1; 

} DDEACK;

Members

bAppReturnCode: Specifies an application-defined return code.
fBusy: Indicates whether the application was busy and unable to respond to the partner’s message at the time the message was received. A nonzero value indicates the partner was busy and unable to respond. The fBusy member is defined only when the fAck member is zero.
fAck: Indicates whether the application accepted the message from its partner. A nonzero value indicates the partner accepted the message.