/*****************************************************************
* DdeClientTransaction (USER32.@)
*/
HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HSZ hszItem, UINT wFmt,
UINT wType, DWORD dwTimeout, LPDWORD pdwResult)
{
WDML_CONV* pConv;
WDML_XACT* pXAct;
HDDEDATA hDdeData;
TRACE("(%p,%d,%p,%p,%x,%x,%d,%p)\n",
pData, cbData, hConv, hszItem, wFmt, wType, dwTimeout, pdwResult);
if (hConv == 0)
{
WARN("Invalid conversation handle NULL\n");
return 0;
}
pConv = WDML_GetConv(hConv, TRUE);
if (pConv == NULL)
{
/* cannot set error... cannot get back to DDE instance */
return 0;
}
switch (wType)
{
case XTYP_EXECUTE:
/* Windows simply ignores hszItem and wFmt in this case */
pXAct = WDML_ClientQueueExecute(pConv, pData, cbData);
if (pXAct == NULL)
return 0;
break;
case XTYP_POKE:
if (!hszItem)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
return 0;
}
pXAct = WDML_ClientQueuePoke(pConv, pData, cbData, wFmt, hszItem);
break;
case XTYP_ADVSTART|XTYPF_NODATA:
case XTYP_ADVSTART|XTYPF_NODATA|XTYPF_ACKREQ:
case XTYP_ADVSTART:
case XTYP_ADVSTART|XTYPF_ACKREQ:
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
return 0;
}
pXAct = WDML_ClientQueueAdvise(pConv, wType, wFmt, hszItem);
break;
case XTYP_ADVSTOP:
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
return 0;
}
pXAct = WDML_ClientQueueUnadvise(pConv, wFmt, hszItem);
break;
case XTYP_REQUEST:
if (pData || !hszItem)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
return 0;
}
pXAct = WDML_ClientQueueRequest(pConv, wFmt, hszItem);
break;
default:
FIXME("Unknown transaction type %04x\n", wType);
/* unknown transaction type */
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
return 0;
}
if (pXAct == NULL)
{
pConv->instance->lastError = DMLERR_MEMORY_ERROR;
return 0;
}
WDML_QueueTransaction(pConv, pXAct);
TRACE("pConv->wStatus %04x\n", pConv->wStatus);
if (pConv->wStatus & ST_BLOCKED)
{
TRACE("Transactions are blocked, add to the queue and exit\n");
return (HDDEDATA)1;
}
hDdeData = WDML_ClientHandle(pConv, pXAct, dwTimeout, pdwResult);
if (dwTimeout != TIMEOUT_ASYNC)
{
WDML_UnQueueTransaction(pConv, pXAct);
WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
}
return hDdeData;
}
/*****************************************************************
* DdeClientTransaction (USER32.@)
*/
HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HSZ hszItem, UINT wFmt,
UINT wType, DWORD dwTimeout, LPDWORD pdwResult)
{
WDML_CONV* pConv;
WDML_XACT* pXAct;
HDDEDATA hDdeData = 0;
TRACE("(%p,%ld,%p,%p,%x,%x,%ld,%p)\n",
pData, cbData, hConv, hszItem, wFmt, wType, dwTimeout, pdwResult);
if (hConv == 0)
{
WARN("Invalid conversation handle NULL\n");
return 0;
}
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, TRUE);
if (pConv == NULL)
{
/* cannot set error... cannot get back to DDE instance */
goto theError;
}
switch (wType)
{
case XTYP_EXECUTE:
/* Windows simply ignores hszItem and wFmt in this case */
pXAct = WDML_ClientQueueExecute(pConv, pData, cbData);
break;
case XTYP_POKE:
pXAct = WDML_ClientQueuePoke(pConv, pData, cbData, wFmt, hszItem);
break;
case XTYP_ADVSTART|XTYPF_NODATA:
case XTYP_ADVSTART|XTYPF_NODATA|XTYPF_ACKREQ:
case XTYP_ADVSTART:
case XTYP_ADVSTART|XTYPF_ACKREQ:
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
}
pXAct = WDML_ClientQueueAdvise(pConv, wType, wFmt, hszItem);
break;
case XTYP_ADVSTOP:
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
}
pXAct = WDML_ClientQueueUnadvise(pConv, wFmt, hszItem);
break;
case XTYP_REQUEST:
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
}
pXAct = WDML_ClientQueueRequest(pConv, wFmt, hszItem);
break;
default:
FIXME("Unknown transation\n");
/* unknown transaction type */
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
}
if (pXAct == NULL)
{
pConv->instance->lastError = DMLERR_MEMORY_ERROR;
goto theError;
}
WDML_QueueTransaction(pConv, pXAct);
if (!PostMessageW(pConv->hwndServer, pXAct->ddeMsg, (WPARAM)pConv->hwndClient, pXAct->lParam))
{
WARN("Failed posting message %x to %p (error=0x%lx)\n",
pXAct->ddeMsg, pConv->hwndServer, GetLastError());
pConv->wStatus &= ~ST_CONNECTED;
WDML_UnQueueTransaction(pConv, pXAct);
WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
goto theError;
}
pXAct->dwTimeout = dwTimeout;
/* FIXME: should set the app bits on *pdwResult */
if (dwTimeout == TIMEOUT_ASYNC)
{
if (pdwResult)
{
*pdwResult = MAKELONG(0, pXAct->xActID);
}
hDdeData = (HDDEDATA)1;
}
else
{
DWORD count, i;
count = WDML_CritSect.RecursionCount;
for (i = 0; i < count; i++)
LeaveCriticalSection(&WDML_CritSect);
hDdeData = WDML_SyncWaitTransactionReply((HCONV)pConv, dwTimeout, pXAct, pdwResult);
for (i = 0; i < count; i++)
EnterCriticalSection(&WDML_CritSect);
}
LeaveCriticalSection(&WDML_CritSect);
return hDdeData;
theError:
LeaveCriticalSection(&WDML_CritSect);
return 0;
}