Dear All,
I am given an API linux library *.so file written in C++.
It was expected to be consume by a program written in C++.
However, I would like to write such a program in Free Pascal.
The given header file is:
#ifndef ApiProxyWrapperReplyH
#define ApiProxyWrapperReplyH
//---------------------------------------------------------------------------
#include <stdio.h>
#include "SPApiProxyDataType.h"
class ApiProxyWrapperReply {
public:
ApiProxyWrapperReply(void){};
~ApiProxyWrapperReply(void){};
virtual void OnLoginReply(char *user_id, long ret_code,char
*ret_msg) = 0;
virtual void OnConnectedReply(long host_type,long con_status) = 0;
virtual void OnApiOrderRequestFailed(tinyint action, const
SPApiOrder *order, long err_code, char *err_msg) = 0;
virtual void OnApiOrderReport(long rec_no, const SPApiOrder *order)
= 0;
virtual void OnApiOrderBeforeSendReport(const SPApiOrder *order) = 0;
virtual void OnAccountLoginReply(char *accNo, long ret_code, char*
ret_msg) = 0;
virtual void OnAccountLogoutReply(char *accNo, long ret_code, char*
ret_msg) = 0;
virtual void OnAccountInfoPush(const SPApiAccInfo *acc_info) = 0;
virtual void OnAccountPositionPush(const SPApiPos *pos) = 0;
virtual void OnUpdatedAccountPositionPush(const SPApiPos *pos) = 0;
virtual void OnUpdatedAccountBalancePush(const SPApiAccBal
*acc_bal) = 0;
virtual void OnApiTradeReport(long rec_no, const SPApiTrade *trade)
= 0;
virtual void OnApiPriceUpdate(const SPApiPrice *price) = 0;
virtual void OnApiTickerUpdate(const SPApiTicker *ticker) = 0;
virtual void OnPswChangeReply(long ret_code, char *ret_msg) = 0;
virtual void OnProductListByCodeReply(long req_id, char *inst_code,
bool is_ready, char *ret_msg) = 0;
virtual void OnInstrumentListReply(long req_id, bool is_ready, char
*ret_msg) = 0;
virtual void OnBusinessDateReply(long business_date) = 0;
virtual void OnApiMMOrderBeforeSendReport(SPApiMMOrder *mm_order) = 0;
virtual void OnApiMMOrderRequestFailed(SPApiMMOrder *mm_order, long
err_code, char *err_msg) = 0;
virtual void OnApiQuoteRequestReceived(char *product_code, char
buy_sell, long qty) = 0;
virtual void OnApiAccountControlReply(long ret_code, char *ret_msg)
= 0;
virtual void OnApiLoadTradeReadyPush(long rec_no, const SPApiTrade
*trade) = 0;
};
#endif
I am expected to create and pass an instance of such class
ApiProxyWrapperReply in my calling program
via a function
void SPAPI_RegisterApiProxyWrapperReply(ApiProxyWrapperReply*
apiProxyWrapperReply);
and the external library will then call the various methods of
ApiProxyWrapperReply as 'call-back' functions when needed.
I consulted co-pilot but it failed to teach me how to do so in a Free
Pascal program calling such an external library.
Please kindly help.
Dennis Poon
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