使用Visual Studio的C ++编译错误（LNK1120和LNK2019） [英] C++ compile error (LNK1120 and LNK2019) with Visual Studio

问题描述

我是C ++的新手，我需要帮助一个非常基本的程序。

背景信息：获得了Logitech G19s 。它有一个小彩色液晶屏。你可以用C ++编写应用程序。所以我决定尝试它，即使我是新来的C + +，写一些你好世界。

问题：
当我编译我的小的Hello World应用程序，我得到2错误：LNK1120和LNK2019，没有任何其他信息。这里是我的代码：

  #pragma comment（lib，LogitechLcd.lib）
 #includeLogitechLcd.h 
 
 int main（）{
 LogiLcdInit（LHello World，LOGI_LCD_TYPE_COLOR）; 
 while（true）{
 LogiLcdUpdate（）; 
 LogiLcdColorSetText（4，LHello G19s，255，0，0）; 
} 
 LogiLcdShutdown（）; 
 return 0; 
} 
  

，这里是 LogitechLcd.h（pastebin.com）。

当我编译这个（使用Visual Studio Professional 2013）上面提到的错误。任何人都可以帮助我（如果可能，解释为什么它不工作）？

编辑：让它现在工作！ Viusal Studio没有找到lib，所以我不得不把它放在项目文件夹中。非常愚蠢的错误！

解决方案

听起来你的项目设置错误类型。

查看 ：//stackoverflow.com/questions/11247699/lnk2019-unresolved-external-symbol-main-referenced-in-function-tmaincrtstar>此处。

I am a newbie to C++ and I need help with a very basic program.

Background information: I recently got the Logitech G19s. It has a small color LCD screen. You can write apps for it in C++. So I decided to try it out, even though I'm new to C++, and write some hello world. Shouldn't be to dificult, but it turns out to be a real pain!

Problem: When I compile my small Hello World app, I get 2 errors: LNK1120 and LNK2019, without any other information. Here's my code:

#pragma comment(lib, "LogitechLcd.lib")
#include "LogitechLcd.h"

int main() {
    LogiLcdInit(L"Hello World", LOGI_LCD_TYPE_COLOR);
    while (true) {
        LogiLcdUpdate();
        LogiLcdColorSetText(4, L"Hello G19s", 255, 0, 0);
    }
    LogiLcdShutdown();
    return 0;
}

and here's the LogitechLcd.h (pastebin.com).

When I compile this (with Visual Studio Professional 2013), I get the errors mentioned above. Can anyone help me out (and, if possible, explain why it doesn't work)?

EDIT: I somewhat got it to work now! Viusal Studio didn't find the lib, so I had to place it in the project folder. Very stupid mistake!

解决方案

It sounds like you have the project set up as the wrong type.

Look here.

And here.

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