RE: Examples

["Bob Crothers" <bob@xxxxxxxxxxxxxx>]

Greg,

First, I'd recommend you use the following declaration for your space
pointer:

unsigned char *mySpacePtr;

By using an unsigned char, the compilor will not play mind/sign games with
you when doing compares.  It might not mater for what you are doing today,
but someday it will.

After you have the pointer to the user space, it is simple...just use it.

Eg: in your code, usrspc now points to the actual data in the space.  If you
do a strcpy(usrspc, "My Space"); and then dump the space, the first 8
characters will be "My Space" and character 9 will be a hex 0 (end of the
string).

And reading is the same concept.  Spaces are very easy to work with in C.
Almost like a very large in memory field, except they have persistence.

Bob

-----Original Message-----
From: owner-c400-l@midrange.com [mailto:owner-c400-l@midrange.com]On Behalf
Of Greg Leibfried
Sent: Tuesday, June 13, 2000 2:40 PM
To: C400-L@midrange.com
Subject: Examples

Phil,

Thanks for those examples..they will be good to refer to (at least for
me ;-)
I'm looking for additional examples on retrieving info from user spaces.
I have program that calls the QMHLJOBL api to load a list of messages
into a user space.
My problem is that I'm having hard time getting the retrieval of the
list down.

Declarations...

  Qmh_Ljobl_JSLT0100        jslt100;
  Qus_EC                    error;
  char                      *usrspc,*usrspcptr;

Here is my call to QMHLJOBL...

  QMHLJOBL("TEST      TESTLIB   ",       //name of USER SPACE
            "LJOB0100",                  //format of message returned
            &jslt100,                    //message selection information
            sizeof(jslt100),             //size of message selection
info
            "JSLT0100",                  //format of message selection
info
            &error);                     //error structure


Here is my call to QUSPTRUS to retrieve a pointer to the space....

  QUSPTRUS("TEST      TESTLIB   ",&usrspc,&error);


I'm a little confusted by the next step, now that I have a pointer the
space.  I've used another tool to display the user space, so I know that
the data I want is in there.  What do I do next?

If anyone has some good examples or pointers on what to do next, I'd
appreciate it!

Thanks!

....gregl
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