C++ compile error (LNK1120 and LNK2019) with Visual Studio

Question

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!

Those are no compiler errors, but linker errors (LNK = LINKER or LINK). Make sure the file `LogitechLcd.lib` can be found. — dyp, Jan 01 '14 at 16:35
Please copy the exact output. These are errors from the linker. It can't find symbols. You are probably not passing the path to the library to the linker. — TimDave, Jan 01 '14 at 16:36
Fehler 2 error LNK1120: 1 nicht aufgelöste Externe E:\Freizeit\Programmieren\G19s\thisWillWork\Debug\thisWillWork.exe 1 1 thisWillWork Fehler 1 error LNK2019: Verweis auf nicht aufgelöstes externes Symbol "_WinMain@16" in Funktion "___tmainCRTStartup". E:\Freizeit\Programmieren\G19s\thisWillWork\thisWillWork\MSVCRTD.lib(crtexew.obj) thisWillWork -yes, I'm german! — ionree, Jan 01 '14 at 16:48
This is related to [undefined reference to `WinMain@16'](http://stackoverflow.com/questions/5259714/undefined-reference-to-winmain16). Maybe the answer there helps. — Sebastian, Jan 01 '14 at 16:51

score 2 · Accepted Answer · edited May 23 '17 at 10:30

2

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

Look here.

And here.

edited May 23 '17 at 10:30

Community

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answered Jan 01 '14 at 16:51

FuzzyBunnySlippers

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My project is set up as a win32-Application, and if I'm not totally mistaken this means its native c++ PS: The compiler is set to 32 bit as well – ionree Jan 02 '14 at 18:47

score 1 · Answer 2 · edited Sep 09 '17 at 19:02

1

Is it a console project? (If you don't know, look at Project Properties > Linker > System > Subsystem). It should be the first thing that comes up. If so, make your main function a wmain function. If it's a Win32 project it was something like WinMain(16), not sure.

I hope it helped.

edited Sep 09 '17 at 19:02

Sᴀᴍ Onᴇᴌᴀ

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answered Sep 09 '17 at 18:33

Toucan Sign

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In case you missed it, the OP typed in [a comment](https://stackoverflow.com/questions/20870676/c-compile-error-lnk1120-and-lnk2019-with-visual-studio/46133902#comment31381733_20870676): "_As statet in the edit, i finally got it working_" Jan 3 '14 at 14:52 – Sᴀᴍ Onᴇᴌᴀ Sep 09 '17 at 19:01

C++ compile error (LNK1120 and LNK2019) with Visual Studio

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