Question about Data Structure

[Former Member]

Hello to everybody,

Is my first post on this forum and i wish to apologize from the beginning if is not the right thread for my question but i didn't find a better place.

I try to write a function using RFC API function on C programming language and was working smoothly until when i found this data structure problem .Now , i am not very sure that my understanding about data structure have the same meaning like on the SAP RFC SDK documentation but i will try to explain better by example :

BAPI function = "BAPI_PLANNEDORDER_GET_DET_LIST"

export parameter="SELECTIONCRITERIA"

import paramater="RETURN"

Are some fields (in my understanding) which should be in relation with import and export parameter

export("PLANT")="RO1P"

export("MRP_CTRLER")="888"

export("MATERIAL") = "8517501100"

export("PROD_LINE") = "LINE1"

export("END_SEL_DATE") = "2007-06-30"

export("STR_SEL_DATE") = "2007-06-01"

And some data should be retrieve from import parameter fields

import(“Type”)

import(“ID”)

import(“NUMBER”)

import(“MESSAGE”)

I read on the RFC SDK documentation that to use this kind of data i should use RfcInstallStructure and for export parameter i do it like :

/-----C code--

---

/

RFC_PARAMETER EXPORT_PARAM[1];

RFC_TYPE_ELEMENT rte[4];

char mbuff[255];

RFC_TYPEHANDLE rtehnd=0;

rte[0].name="PLANT";

rte[0].length=8;

rte[0].type=TYPEC;

rte[1].name="MRP_CTRLER";

rte[1].length=8;

rte[1].type=TYPEC;

rte[2].name="MATERIAL";

rte[2].length=8;

rte[2].type=TYPEC;

rte[3].name=" PROD_LINE ";

rte[3].length=8;

rte[3].type=TYPEC;

rte[4].name=" END_SEL_DATE";

rte[4].length=8;

rte[4].type=TYPEC;

rte[4].name=" STR_SEL_DATE";

rte[4].length=8;

rte[4].type=TYPEC;

RfcInstallStructure(“RTEEXP”,rte,ENTRIES(rte),& rtehnd);

EXPORT_PARAM[0].name=” SELECTIONCRITERIA”; //the name of the export param

EXPORT_PARAM[0].nlen=strlen(EXPORT_PARAM[0].name);

EXPORT_PARAM[0].addr=(void*)mbuff; //pointer address for value set – here is my confusion.I have 4 values but only one pointer.

EXPORT_PARAM[0].leng=sizeof(mbuff);

EXPORT_PARAM[0].type=rtehnd; //type handler returned from RfcInstallStructure

/--

---

END CODE--

---

/

For the moment I stop it here because is coming my first question :

How can I set the value for the fields which are already installed by RfcInstallStructure ?

Thank you,

[Former Member]

Problem solved.

Finally,I understand how it's working RFC structure data.

Thank you for your support.

Best Regards.