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Topic: Printing PDF in C++/Handle Count
Conf: (P-PDF) Developers, Msg: 82227
From: chaitanyamk
Date: 3/4/2003 10:55 PM

Hi there,

I need to print PDF documents to default printer continuously. I am using DDE/IAC DdeClientTransaction in MS VC++ for printing with server as "acroview", topic as "control" and command string as "FilePrintSilent". this is working great!

but after 10000 prints, system is not responding. this program is draining all the system resources. every time after each print I see "Handle" count is incrementing for acrobat reader 5.0 on my task manager.

code snippet is below:

retVal = DdeInitialize (&id, &DDE_ProcessMessage, APPCMD_CLIENTONLY, 0);

// Initialize DDE conversation with server.
hszServerName = DdeCreateStringHandle (id, ACRO_DDESERVER, 0);
hszTopicName = DdeCreateStringHandle (id, ACRO_DDETOPIC, 0);
hConversation = DdeConnect (id, hszServerName, hszTopicName, NULL);

// Execute the DDE Command in a loop
HDDEDATA hdd = DdeClientTransaction ((unsigned char *)ddeCmdBuf, (DWORD)strlen(ddeCmdBuf), (HCONV)hConversation, NULL, (UINT)CF_TEXT, (UINT)XTYP_EXECUTE, TIMEOUT_ASYNC, &dwResult);

BOOL bRet = DdeFreeDataHandle(hdd);


DdeDisconnect (hConversation);

// Release resources.
DdeFreeStringHandle (id, hszServerName);
DdeFreeStringHandle (id, hszTopicName);
DdeUninitialize (id);

am I missing something here. I have tried ShellExecute also in that case also I see "Handle" count incrementing for Acrobat Reader and eventually degrading system performance. I have spent lot time experimenting with ShellExecute, CreateProcess, command line options("AcroRd32 /p /h file.pdf") and DDE and every time I am getting the same problem with Handle count. any help would be greatly appreciated. I am desperately looking for some help.

Thanks in advance.


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