void Dde_Item::Advise ( HWND Server, HWND Client, BOOL Hot ) {
if ( Hot ) {
// Search for a matching entry in the hot link list. Return if found.
for ( int i=0; i<sizeof(HotLinks)/sizeof(HotLinks[0]); i++ ) {
if ( ( HotLinks[i][0] == Server ) AND ( HotLinks[i][1] == Client ) ) {
Log ( "WARNING: Link already established." ) ;
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_FACK, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
return ;
} /* endif */
} /* endfor */
// Search for an empty entry in the hot link list. Use if not found.
for ( i=0; i<sizeof(HotLinks)/sizeof(HotLinks[0]); i++ ) {
if ( ( HotLinks[i][0] == 0 ) AND ( HotLinks[i][1] == 0 ) ) {
HotLinks[i][0] = Server ;
HotLinks[i][1] = Client ;
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_FACK, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
return ;
} /* endif */
} /* endfor */
Log ( " WARNING: Hot link table full." ) ;
} else {
// Search for a matching entry in the warm link list. Return if found.
for ( int i=0; i<sizeof(WarmLinks)/sizeof(WarmLinks[0]); i++ ) {
if ( ( WarmLinks[i][0] == Server ) AND ( WarmLinks[i][1] == Client ) ) {
Log ( "WARNING: Link already established." ) ;
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_FACK, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
return ;
} /* endif */
} /* endfor */
// Search for an empty entry in the warm link list. Use if not found.
for ( i=0; i<sizeof(WarmLinks)/sizeof(WarmLinks[0]); i++ ) {
if ( ( WarmLinks[i][0] == 0 ) AND ( WarmLinks[i][1] == 0 ) ) {
WarmLinks[i][0] = Server ;
WarmLinks[i][1] = Client ;
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_FACK, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
return ;
} /* endif */
} /* endfor */
Log ( " WARNING: Warm link table full." ) ;
} /* endif */
// Reply with an error.
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_NOTPROCESSED, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
}
static char SendData( message *msg, char send_init )
/**************************************************/
{
initiate_data *idata;
goto_data *gdata;
DDESTRUCT *dde;
gdata = MemAlloc( sizeof( goto_data ) + strlen( msg->error ) );
if( gdata == NULL ) {
return( FALSE );
}
if( send_init ) {
idata = MemAlloc( sizeof( initiate_data ) +
strlen( CurrSession->help_library ) );
if( idata == NULL ) {
MemFree( gdata );
return( FALSE );
}
idata->errorcount = 1;
idata->errors[0].errorline = msg->row;
idata->errors[0].offset = msg->col;
idata->errors[0].length = msg->len;
idata->errors[0].magic = 0;
idata->liblength = strlen( CurrSession->help_library );
strcpy( idata->libname, CurrSession->help_library );
dde = MakeDDEObject( CurrSession->hwnd, "Initialize", 0, DDEFMT_TEXT,
idata, sizeof( initiate_data ) + idata->liblength );
WinDdePostMsg( CurrSession->hwnd, hwndDDE, WM_DDE_EXECUTE, dde,
DDEPM_RETRY );
}
gdata->errorline = msg->row;
gdata->offset = msg->col;
gdata->resourceid = msg->resourceid;
gdata->magic = 0;
gdata->textlength = strlen( msg->error );
strcpy( gdata->errortext, msg->error );
dde = MakeDDEObject( CurrSession->hwnd, "Goto", 0, DDEFMT_TEXT,
gdata, sizeof( goto_data ) + gdata->textlength );
WinDdePostMsg( CurrSession->hwnd, hwndDDE, WM_DDE_EXECUTE, dde,
DDEPM_RETRY );
if( send_init ) {
MemFree( idata );
}
MemFree( gdata );
return( TRUE );
}
void Dde_Item::BroadcastUpdate ( ) {
// Send data complete to all hot links.
for ( int i=0; i<sizeof(HotLinks)/sizeof(HotLinks[0]); i++ ) {
if ( HotLinks[i][0] ) {
PDDESTRUCT Message = MakeDDEObject ( HotLinks[i][1], PSZ(Name), 0, Format, Data, Size ) ;
WinDdePostMsg ( HotLinks[i][1], HotLinks[i][0], WM_DDE_DATA, Message, DDEPM_RETRY ) ;
} /* endif */
} /* endfor */
// Send advisory to all warm links.
for ( i=0; i<sizeof(WarmLinks)/sizeof(WarmLinks[0]); i++ ) {
if ( WarmLinks[i][0] ) {
PDDESTRUCT Message = MakeDDEObject ( WarmLinks[i][1], PSZ(Name), DDE_FNODATA, Format, 0, 0 ) ;
WinDdePostMsg ( WarmLinks[i][1], WarmLinks[i][0], WM_DDE_DATA, Message, DDEPM_RETRY ) ;
} /* endif */
} /* endfor */
}
void Dde_Item::Unadvise ( HWND Server, HWND Client ) {
// Cancel any links on this item for this Server/Client pair.
Terminate ( Server, Client ) ;
// Reply with an ACK.
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_FACK, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
}
void Dde_Topic::Execute ( HWND Server, HWND Client, char *ItemName, int Format, PVOID Data, int Size ) {
// Search for the item and ask it to reply.
Dde_Item *Item = First ;
while ( Item ) {
if ( !strcmpi ( ItemName, Item->QueryName() ) ) {
Item->Execute ( Server, Client, Format, Data, Size ) ;
return ;
} /* endif */
Item = Item->QueryNext() ;
} /* endwhile */
// Reply with an error if the topic was not found.
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_NOTPROCESSED, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
}
void Dde_Item::Execute ( HWND Server, HWND Client, int, PVOID, int ) {
// Reply with an error, as we don't support this function.
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), DDE_NOTPROCESSED, DDEFMT_TEXT, 0, 0 ) ;
WinDdePostMsg ( Client, Server, WM_DDE_ACK, Response, DDEPM_RETRY ) ;
}
void Dde_Item::Request ( HWND Server, HWND Client ) {
// Reply with the item data.
PDDESTRUCT Response = MakeDDEObject ( Client, PSZ(Name), 0, Format, Data, Size ) ;
WinDdePostMsg ( Client, Server, WM_DDE_DATA, Response, DDEPM_RETRY ) ;
}
