First Thanks for reply even not a clear message...

Oh!.. Using DLL is a sophisticated issue me plus speaking another language from native (English). I'll try again.

Open Object Browser,
select a DLL,
drag and drop into code editor.
You'll see like that:

I couldn't use these codes (codes below). these codes don't run anything and return .t. alltime. what i must to do?

x=NEWOBJECT("myclass")

DEFINE CLASS myclass AS session OLEPUBLIC

	IMPLEMENTS ISMSSend IN "SMS3ASuiteLib.SMS_SuiteAdapter"

	PROCEDURE ISMSSend_CreateShortMsg() AS VARIANT;
 				HELPSTRING "method CreateShortMsg"
	* add user code here
	ENDPROC

	PROCEDURE ISMSSend_Send(pSMS AS VARIANT) AS VOID;
 				HELPSTRING "method Send"
	* add user code here
	ENDPROC

	PROCEDURE ISMSSend_GetLastError() AS VARIANT;
 				HELPSTRING "method GetLastError"
	* add user code here
	ENDPROC

	PROCEDURE ISMSSend_Terminate() AS VOID;
 				HELPSTRING "method Terminate"
	* add user code here
	ENDPROC

	PROCEDURE ISMSSend_StartListeningEvents() AS VOID;
 				HELPSTRING "method StartListeningEvents"
	* add user code here
	ENDPROC

ENDDEFINE

and a second question. I understood what you said in recent message but which word my dll's reference name on object browser?