error specifying path for CreateProcess

Hi Everyone,

Can someone please help me with this problem, Thanks ahead of time:
I am trying to use CreateProcess() to launch a java
executable and then wait for it to terminate. This is what
my code looks like:

NIpath = "java -
classpath .;ni.jar;lib\\snmp4_13.jar;lib\\comm.jar;lib\\tab
lelayout.jar;lib\\jaxb\\jax-qname.jar;lib\\jaxb\\jaxb-
api.jar;lib\\jaxb\\jaxb-libs.jar;lib\\jaxb\\jaxb-
ri.jar;lib\\jaxb\\jaxb-xjc.jar;lib\\jaxb\\namespace.jar
com.ni.NI";

createProcessStatus = CreateProcess(NULL, NIpath, NULL,
NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi);

(There is a space between the long string after -classpath and "com.ni.NI")
The problem is with NIpath. CreateProcess executes without
error if the com.ni.NI executable is in
the same directory as my program's executable, however as
soon as i place in some other directory ( i.e. NetInv/
with NIpath = "java -
classpath .;...lib\\jaxb\\namespace.jar NetInv.com.ni.NI" )I get an error.
I think it has something to with the fact that part of
the path I specified is compressed in a .jar file
(everything except for NetInv/ is in .jar file). Does
anybody have a clue as to what's going on?

btw, error = "Exception in thread "main"
java.lang.NoClassDefFoundError:
NetInv/com/ni/NI "

also when executable is in the same folder as my program's
executable, it only works properly when I physically
double click on the executable that is generated, if i run
my executable from visual studio i get the same error. Why
does this happen, does it run the executable from some
other location??

I notice that you have the first argument of CreateProcess() as NULL. Have you tried calling CreateProcess like this instead:

createProcessStatus = CreateProcess("java", "-classpath .;...restofstuff...", NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi);

You may need to set the first argument to "/path/to/java" instead of plain "java". Also, the lpCurrentDirectory parameter might need to be set. See http://msdn.microsoft.com/library/d...eateprocess.asp for more info about this.

Thanks for your advice but it didnt work, I still think the problem has something to do with .jar compressed files. Even if I am right though, I do not know how to get around the problem. I tried several things:

char * NIpath = "java
-classpath
.;ni.jar;lib\\snmp4_13.jar;lib\\comm.jar;lib\\tablelayout.jar;lib\\jaxb\\jax-qname.jar;lib\\jaxb\\jaxb-api.jar;lib\\jaxb\\jaxb-libs.jar;lib\\jaxb\\jaxb-ri.jar;lib\\jaxb\\jaxb-xjc.jar;lib\\jaxb\\namespace.jar
com.ni.NetInventory";

char * NIpath2 = "java
-classpath
.;ni.jar;lib\\snmp4_13.jar;lib\\comm.jar;lib\\tablelayout.jar;lib\\jaxb\\jax-qname.jar;lib\\jaxb\\jaxb-api.jar;lib\\jaxb\\jaxb-libs.jar;lib\\jaxb\\jaxb-ri.jar;lib\\jaxb\\jaxb-xjc.jar;lib\\jaxb\\namespace.jar
NI.com.ni.NetInv";

char * NIcommand = "C:\\Program Files\\Java\\j2re1.4.1_02\\java
-classpath
.;ni.jar;lib\\snmp4_13.jar;lib\\comm.jar;lib\\tablelayout.jar;lib\\jaxb\\jax-qname.jar;lib\\jaxb\\jaxb-api.jar;lib\\jaxb\\jaxb-libs.jar;lib\\jaxb\\jaxb-ri.jar;lib\\jaxb\\jaxb-xjc.jar;lib\\jaxb\\namespace.jar";

char * NIcompath = "NI.com.ni.NetInven";

char * curWorkingDir = "C:\\RelCalc\\RelCalc\\Debug";

//attempt 1
createProcessStatus = CreateProcess(( "java", "-class path ..restof of stuff", NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, curWorkingDir, &si, &pi); //error code 2

//attempt 2
createProcessStatus = CreateProcess(( "C:\\Program Files\\..\\bin\\java", "-classpath ..restofstuff", NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, curWorkingDir, &si, &pi);
//error code 2

//attempt 3
createProcessStatus = CreateProcess(( NIcompath, NIcommand, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, curWorkingDir, &si, &pi);

//attempt 4
createProcessStatus = CreateProcess(( NIcommand, NIcompath, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, curWorkingDir, &si, &pi);

//still the only thing that work is
createProcessStatus = CreateProcess(( NULL, NIpath, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, curWorkingDir, &si, &pi);//when i double click on teh .exe generated, not when I run it from visual studio .. what is going on!?

Any additional advice will be greatly appreciated.
Thanks!