I have a this declaration has no storage class or type specifier problem when implementing a C++ dll. Here is the code
CarPool.h code:
#pragma once
#define DllExport _extern "C" long __declspec(dllexport)
DllExport CartToPol(char* fileName, long imgWidth, long imgHeight, long bytePerPixel);
DllExport PolToCart(char* fileName, long imgWidth, long imgHeight, long bytePerPixel);
CarPool.cpp code
// CarPool.cpp : Defines the exported functions for the DLL application.
//
#include "stdafx.h"
#include "CarPool.h"
DllExport CartToPol(char* fileName, long imgWidth, long imgHeight, long bytePerPixel)
{
return TRUE;
}
DllExport PolToCart(char* fileName, long imgWidth, long imgHeight, long bytePerPixel)
{
return TRUE;
}
Anyone has any idea why? Thanks.
I found it, it was the underscore on extern.
It should be
#define DllExport extern "C" long __declspec(dllexport)
instead of
#define DllExport _extern "C" long __declspec(dllexport)
Thanks.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.