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digitalmars.D.learn - How to repeat structure C++

reply MGW <mgw yandex.ru> writes:
Hi!

I write plugin for 1C:Enterprise 8.3 on dmd now.

https://youtu.be/apLppufZulI

I try to repeat structure C++ (interface) on dmd.
But D no inheritance of structures. What it is possible
to replace with the D following code on C ++struct IInterface {};

C++
-----
struct IMsgBox : public IInterface {
	virtual bool Confirm(const wchar* queryText, tVariant* retVal) = 
0;
	virtual bool Alert(const wchar* text) = 0;
};
Jan 15 2017
parent reply MGW <mgw yandex.ru> writes:
On Sunday, 15 January 2017 at 19:00:49 UTC, MGW wrote:

 Hi!


struct IInterface {};
struct IMsgBox : public IInterface {
	virtual bool Confirm(const wchar* queryText, tVariant* retVal) = 
0;
	virtual bool Alert(const wchar* text) = 0;
};
Jan 15 2017
parent reply Adam D. Ruppe <destructionator gmail.com> writes:
On Sunday, 15 January 2017 at 19:05:06 UTC, MGW wrote:

 struct IInterface {};
 struct IMsgBox : public IInterface {
 	virtual bool Confirm(const wchar* queryText, tVariant* retVal) 
 = 0;
 	virtual bool Alert(const wchar* text) = 0;
 };


That's just interfaces and classes in D, so change struct to 
those words and go fro there.
Jan 15 2017
parent MGW <mgw yandex.ru> writes:
On Monday, 16 January 2017 at 00:07:44 UTC, Adam D. Ruppe wrote:

 That's just interfaces and classes in D, so change struct to 
 those words and go fro there.


// ------- jd.d:  compile: dmd -c jd
import std.stdio;
extern (C++) interface IHome { int sum(int, int); };
extern (C++) void printIHome(void* ptr) {
	IHome  ob = cast(jd.IHome)ptr;
	ob.sum(4, 5);
}

// ------- jc.cpp  compile: dmc jc.cpp jd.obj phobos.lib
#include <stdio.h>

struct IHome {
	int sum(int a, int b) {
		int s = a+b; printf("a = %d, b = %d, sum = %d\n", a, b, s);
		return s;
	}
};

extern "C" int 		rt_init();
extern "C" int 		rt_term();

extern void 		printIHome(void*);

void main() {
	IHome iMyHome;
	rt_init();
	// -------
	iMyHome.sum(2, 3);   // Call C++ method in C++
	IHome* ptriMyHome = &iMyHome;
	printIHome(ptriMyHome);    // Call C++ method in D --> ERROR :-(
	// -------
	rt_term();
}
// ---- compile ------------------------------------------
dmd -c jd
dmc jc.cpp jd.obj r:\dmd2\windows\lib\phobos.lib

// -------------------------------------------------------
Please, help to rewrite jd.d for the correct method call in 
structure ะก++.
Jan 15 2017