Question

**编辑，这是我的链接内容的图片......：**

所以，我一直得到“无法解决的外部”错误，我无法修复。我在不同的网站上阅读了很多关于这个的不同帖子，他们都没有帮助。仍然不知道该怎么做。

有人告诉我一些关于定义和声明变量的事情，但我不明白他的意思......

如果有人可以告诉我在我的代码中修改什么，那会很棒。：）

错误列表：

Error   5   error LNK1120: 3 unresolved externals   C:\Users\MyName\Desktop\SDL_Game\Debug\SDL_Game.exe 1   1   SDL_Game

Error   3   error LNK2001: unresolved external symbol "public: static bool CoreEngine::isRunning" (?isRunning@CoreEngine@@2_NA) C:\Users\MyName\Desktop\SDL_Game\SDL_Game\CoreEngine.obj    SDL_Game

Error   2   error LNK2019: unresolved external symbol "public: class Window __thiscall CoreEngine::window(void)" (?window@CoreEngine@@QAE?AVWindow@@XZ) referenced in function "public: __thiscall CoreEngine::CoreEngine(void)" (??0CoreEngine@@QAE@XZ)    C:\Users\MyName\Desktop\SDL_Game\SDL_Game\CoreEngine.obj    SDL_Game

Error   4   error LNK2019: unresolved external symbol _SDL_main referenced in function _main    C:\Users\MyName\Desktop\SDL_Game\SDL_Game\SDL2main.lib(SDL_windows_main.obj)    SDL_Game

所有项目文件：

CoreEngine.h

#pragma once
#include <SDL.h>
#include "Window.h"

class CoreEngine
{
public:
    Window window();

    CoreEngine();
    ~CoreEngine();

    static bool isRunning;

private:

};

CoreEngine.cpp

#include "CoreEngine.h"
#include <iostream>

CoreEngine::CoreEngine()
{

    CoreEngine::isRunning = false;
    CoreEngine::window;

    if (SDL_Init(SDL_INIT_EVERYTHING) < 0)
    {
        CoreEngine::isRunning = false;
        std::cout << "Failed To Initialize SDL" << std::endl;
        system("PAUSE");
        SDL_Quit();
    }
    else 
    {
        while (CoreEngine::isRunning)
        {

        }
    }
}


CoreEngine::~CoreEngine()
{

}

window.h中

#pragma once
#include <SDL.h>

class Window
{
public:
    Window();
    ~Window();

    SDL_Window* window;

private:
    int CreateWindow();
};

Window.cpp

#include "Window.h"


Window::Window()
{
    CreateWindow();
}


Window::~Window()
{

}

int Window::CreateWindow()
{
    window = SDL_CreateWindow("Engine Title", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_SHOWN | SDL_WINDOW_BORDERLESS);

    if (window == NULL)
    {
        return -1;
    }
    else
    {
        return 0;
    }
}

未解决的外部|面向对象的应用程序

0 个答案: