Build Failure On Desktop App

Komissarov Maxim 41

I tried to create a simple desktop app for Windows in VS 2022. The debug configuration is set to Windows (/SUBSYSTEM:WINDOWS), but it still isn't able to build WinMain function.

Here's the code:

include "windows.h"

int WINAPI WinMain(
In HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
In LPSTR lpCmdLine,
In int nCmdShow
);

As a result, it gives me 2 errors.
1 - MSVCRTD.lib(exe_winmain.obj) : error LNK2019: unresolved external symbol WinMain referenced in function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ)
2 - fatal error LNK1120: 1 unresolved externals

idk what to do with it

1 answer

RLWA32 40,286 Reputation points

2022-09-25T13:07:07.19+00:00

Go into your project properties and ensure that you have the correct setting for all platforms and configurations as shown below -
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Komissarov Maxim 41 Reputation points

2022-09-25T13:57:39.9+00:00

I really don't understand.

RLWA32 40,286 Reputation points

2022-09-25T14:11:03.867+00:00

I suggest you start over and use the New Project template to create a Windows Desktop Application -

Komissarov Maxim 41 Reputation points

2022-09-25T17:48:46.5+00:00

I found the way to get rid of this problem. The int function declaration requires a function body after it.

So the code should look like this:

include "windows.h"

int WINAPI WinMain(
In HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
In LPSTR lpCmdLine,
In int nCmdShow
)
{
return 0;
}

Junjie Zhu - MSFT 14,526 Reputation points Microsoft Vendor

2022-09-26T03:05:52.497+00:00

To better understand win32 desktop apps, you can use the project template in visual studio as @RLWA32 recommends.
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