problem with handing over pointers and generic invoke

Hi guys,

I already wrote to this list about my problem and after weeks of reading
the latest documentation and trying out the latest development edition
of Jawin I decided to write you guys again, cause I just can't manage to
get the right result.

Here are the C-functions from the DLL I want to use with Jawin:

P100X_SetChannelConfig

Description :
This subroutine will set the AD channel’s configuration code. This
subroutine will set the active AD channel for P100X_AdPolling,
P100X_AdsPolling and P100X_AdsPacer. This function will refer to the
current active PCI-1002 board. Use the P100X_ActiveBoard(….) to select
the active board.

Syntax :
WORD P100X_SetChannelConfig(WORD wChannel, WORD wConfig);

Parameter:
wChannel : [Input] AD channel number
wConfig : [Input] Configuration code. Refer to Sec. 3.1 for details.

Return:
P100X_NoError : OK
P100X_ExceedBoardNumber : invalidate board number
P100X_FindBoardError : cannot find the PCI-1002 board
P100X_AdControllerError : MagicScan controller
hardware handshake error

------------------------------------------------------------------------------

P100X_Polling
Description :
Performs a single A/D conversion on the active channel by software
polling. The P100X_SetChannelConfig subroutine can be used to change
channel or configuration code. Use the P100X_ActiveBoard(….) to select
the active board.

Syntax :
WORD P100X_Polling(word *wAdVal);

Parameter:
wAdVal : [Output] address of wAdVal, which store the AD data
Data is returned as an integer value in the range 0-4095.

Return:
P100X_NoError : OK
P100X_ExceedBoardNumber : invalidate board number
P100X_FindBoardError : cannot find the PCI-1002 board
P100X_AdPollingTimeOut : hardware timeout error

----------------------------------------------------------------------------

My java code looks like this:

public void start() {
int result = 9999;
try {
String wTotalBoards = "0";
FuncPtr driverInit = new FuncPtr("P100X.DLL", "P100X_DriverInit");
result = driverInit.invoke_I(wTotalBoards, ReturnFlags.CHECK_NONE);
System.out.println("DriverInit: "+result);

FuncPtr activeBoard = new FuncPtr("P100X.DLL", "P100X_ActiveBoard");
result = activeBoard.invoke_I(0, ReturnFlags.CHECK_NONE);
System.out.println("ActiveBoard: "+result);

FuncPtr setChannelConfig = new FuncPtr("P100X.DLL",
"P100X_SetChannelConfig");
result = setChannelConfig.invoke_I(0,"0x00", ReturnFlags.CHECK_W32);
System.out.println("SetChannelConfig: "+result);

NakedByteStream nbs = new NakedByteStream();
FuncPtr polling = new FuncPtr("P100X.DLL", "P100X_Polling");
byte[] a = polling.invoke("A:I:n4", 16, nbs, null, ReturnFlags.CHECK_W32);
LittleEndianInputStream leis = new LittleEndianInputStream(new
ByteArrayInputStream(a));
try {
int retVal = leis.readInt();
System.out.println(retVal);
short bla = leis.readShort(); //wether i use readShort or readInt and
"bla" is an int - the result is the same
System.out.println(bla);
} catch (IOException e) {}

FuncPtr driverClose = new FuncPtr("P100X.DLL", "P100X_DriverClose");
driverClose.invoke_I(ReturnFlags.CHECK_NONE);
} catch (COMException e) {
e.printStackTrace();
}


---------------------------------------------------------------------------------------------------

the problem is: i always get the wrong result for "bla". Maybe it's
because of the configuration code in "setChannelConfig" which i hand
over as a string?
In the documentation it is said, that I should use "0x00" in C for
setting +/-10V as Channel Configuration.

"bla" is always 2300 although it should be some value around 500.....

Can anybody help me?