Sharing Data using Message Queues between 32 Bit and 64 Bit

[Maverick_2]

Hi

We are passing data using message queues between 32 Bit and 64 Bit Apps..

Our functions looks like this in 64 Bit
SendMsg(void * SendBuffer , long len , struc handle )
{
msgsnd(handle->msqid , sendBuffer , len , IPC_NOWAIT);
}

In 32 Bit it is recived as
RecMsg(void * RecvBuffer , long len , struc handle )
{
msgrcv(handle->msqid, RecvBuffer , len , ANY_MSG,MSG_NOERROR);
}

The messages are truncated when they are received in the 32 Bit app. Interestingly only the first 4 chars are truncated.
The Message sizes are pretty small < 500 bytes..

Is it mandatory to use user defined structures
like msgbuf(long type ; string message);

Any Help would be appreciated

Thanks in Advance..

[Steven E. Protter]

I saw a question like this a few days ago, with amost the same subject.

If you recompile your application on this platform, wheter its a 32 bit app or a 64 bit app, data will be shareable in the message queue and other shared memory areas.

You may get code change recommendations from coders, I'm not sure about that.

SEP