Hi Ken,

I think that in order to get rid of that "FunctionExecutionException: Parameter types or their count are not correct" exception you just need to specify the proper function calling convention, for instance:

private void setPosition(){
  UInt results = new UInt(10);
  SingleFloat yPosition = new SingleFloat(50.0F);
  SingleFloat xPosition = new SingleFloat(0.0F);
  DoubleFloat Null = new DoubleFloat();
 
  Pointer pXPos = new Pointer(xPosition);
  Pointer pYPos = new Pointer(xPosition);
  Function setPosition = _EyeOneiO.getFunction("I1_SetPosition");
  System.out.println(xPosition.getValue());
 
  setPosition.setCallingConvention(Function.CDECL_CALLING_CONVENTION); // or Function.STDCALL_CALLING_CONVENTION
  setPosition.invoke(null, pXPos, pYPos);
}

Please try this solution and let me know the resuts.

-Serge

Hi Ken,

Thanks for the update.

To get the data from a Pointer object you need to use its getReferencedObject() method. Or, if you pass some parameter to a constructor of a Pointer (like new Pointer(xPosition)) then you do not need to call the getReferencedObject() method in order to get the updated value. In this case the 'xPosition' variable will be updated automatically after the funciton call, of course if a native function updates it.

-Serge

Hi,

I thinks that this printing issue has nothing to do with JNIWrapper. In fact the testXPos.getValue() just returns a primitive double value. And if you need to print it out in some specific way then you should use the standard Java utilities, such as MessageFormat or NumberFormat to get these values in readable format.

-Serge