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			How can I pass the "ftValue" from C++ to Java if the ftValue a float pointer is ?
			

			The following way doesn't works, please help me!
			

		

			

			//**************
			

			//the Java Class
			

			//**************
			

			public class X extends Y{
			

			

			private int m_statusStart;
			

			private int m_status;
			

			private int m_timeout;
			

			public float m_weight;
			

			

			/** Native's function declarations*/
			

			public native int XBalGetWeight(int nMode, int nTimeout,float ftvalue, int nStatus);
			

			

			/** require the Weight and return the code*/
			

			public int Start(){
			

			int nMode = 2;
			

			int nTimeout = m_timeout;
			

			int nStatus = m_status;
			

			float ftvalue = 0.0f;
			

			

			m_statusStart = XBalGetWeight(nMode, nTimeout, ftvalue, nStatus);
			

			System.out.println("ReturnVal: " + m_statusStart + " ftValue: " + ftvalue   + " " + m_weight);
			

			return m_statusStart;
			

			};
			

			

			}
			

		

			

			//**********************
			

			//the JNI-Wrapper in C++
			

			//**********************
			

			

			JNIEXPORT jint JNICALL Java_device_Waage_XBalGetWeight (JNIEnv *env, jobject thisObj, jint nMode, jint nTimeout, jfloat ftValue, jint numStat){
			

			

			int iRet = -1;
			

			

			jclass clazz;
			

			clazz = env->GetObjectClass(thisObj);
			

			

			iRet = myDll.XBalGetWeight(nMode, nTimeout, &ftValue, numStat);
			

			

			printf("XBalGetWeight, ftValue: %f iRet: %d
			

			", ftValue, iRet);
			

			

			jfieldID fid1 = env->GetFieldID(clazz, "m_weight", "F");
			

			env->GetFloatField(clazz, fid1);
			

			

			env->SetFloatField(clazz, fid1, ftValue);
			

			

			return (jint)iRet;
			

			}
			

		

			

			//**************
			

			// myDll
			

			//**************
			

			

			

			extern   int __stdcall XBalGetWeight(int nMode, int nTimeout,float* ftValue, int nStatus){
			

			

			*ftValue = 1.1f;
			

			return 1;
			

			}
			

		

			

			Thanks, Mario.