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/**********************************************************************************/
/* Allan CORNET */
/* INRIA 2004 */
/**********************************************************************************/
#include "DDE.h"
#include "ddeml.h"
/**********************************************************************************/
static DWORD idInst=0;
static HCONV hConv=NULL;
static BOOL DDEInUse=FALSE;
/**********************************************************************************/
HDDEDATA CALLBACK DdeCallback(
UINT uType, // Transaction type.
UINT uFmt, // Clipboard data format.
HCONV hconv, // Handle to the conversation.
HSZ hsz1, // Handle to a string.
HSZ hsz2, // Handle to a string.
HDDEDATA hdata, // Handle to a global memory object.
DWORD dwData1, // Transaction-specific data.
DWORD dwData2) // Transaction-specific data.
{
return 0;
}
/**********************************************************************************/
BOOL DDEIsOpen(void)
{
return DDEInUse;
}
/**********************************************************************************/
BOOL DDEOpenConnection(char *strServeur, char *strTopic)
{
UINT iReturn=DMLERR_NO_ERROR;
BOOL bOK=TRUE;
if (DDEInUse)
{
bOK=FALSE;
}
else
{
iReturn = DdeInitialize(&idInst, (PFNCALLBACK)DdeCallback,
APPCLASS_STANDARD | APPCMD_CLIENTONLY, 0 );
if (iReturn!=DMLERR_NO_ERROR)
{
bOK=FALSE;
}
else
{
HSZ hszApp, hszTopic;
hszApp = DdeCreateStringHandle(idInst, strServeur, 0);
hszTopic = DdeCreateStringHandle(idInst, strTopic, 0);
hConv = DdeConnect(idInst, hszApp, hszTopic, NULL);
DdeFreeStringHandle(idInst, hszApp);
DdeFreeStringHandle(idInst, hszTopic);
if (hConv == NULL)
{
DdeUninitialize(idInst);
bOK=FALSE;
}
DDEInUse=TRUE;
}
}
return bOK;
}
/**********************************************************************************/
BOOL DDECloseConnection(void)
{
BOOL bOK=FALSE;
if (DDEInUse)
{
DDEInUse=FALSE;
DdeDisconnect(hConv);
DdeUninitialize(idInst);
idInst=0;
hConv=NULL;
bOK=TRUE;
}
else
{
bOK=FALSE;
}
return bOK;
}
/**********************************************************************************/
BOOL DDEExecute(char* szCommand,int TimeOut)
{
BOOL bOK=TRUE;
HDDEDATA hData = DdeCreateDataHandle(idInst, (LPBYTE)szCommand,
lstrlen(szCommand)+1, 0, NULL, CF_TEXT, 0);
if (hData==NULL)
{
bOK=FALSE;
}
else
{
HDDEDATA ReturnValue=NULL;
bOK=TRUE;
if (TimeOut>0)
{
TimeOut=TIMEOUT_ASYNC;
}
ReturnValue=DdeClientTransaction((LPBYTE)hData, 0xFFFFFFFF, hConv, 0L, 0,
XTYP_EXECUTE, TimeOut, NULL);
if (!ReturnValue) bOK=FALSE;
}
return bOK;
}
/**********************************************************************************/
BOOL DDERequest(char* szItem,int TimeOut,char *Result)
{
BOOL bOK=FALSE;
HDDEDATA hData =NULL;
HSZ hszItem = DdeCreateStringHandle(idInst, szItem, 0);
if ( TimeOut < 0 )
{
TimeOut=3000;
}
hData = DdeClientTransaction(NULL,0,hConv,hszItem,CF_TEXT,
XTYP_REQUEST,TimeOut, NULL);
if (hData==NULL)
{
bOK=FALSE;
}
else
{
DdeGetData(hData, (unsigned char *)Result, (DWORD)strlen(Result), 0);
if ( DdeGetLastError(idInst) == DMLERR_NO_ERROR ) bOK=TRUE;
}
return bOK;
}
/**********************************************************************************/
BOOL DDEPoke(char* szItem, char* szData,int TimeOut)
{
BOOL bOK=TRUE;
HDDEDATA ReturnValue=NULL;
HSZ hszItem = DdeCreateStringHandle(idInst, szItem, 0);
if ( TimeOut < 0 )
{
TimeOut=3000;
}
ReturnValue=DdeClientTransaction((LPBYTE)szData, (DWORD)(lstrlen(szData)+1),
hConv, hszItem, CF_TEXT,
XTYP_POKE, TimeOut, NULL);
if (!ReturnValue) bOK=FALSE;
if (!DdeFreeStringHandle(idInst, hszItem)) bOK=FALSE;
return bOK;
}
/**********************************************************************************/
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