I'm trying to make a C++ program, but when I want to test it...

Question

I'm trying to make a C++ program, but when I want to test it...

phoenix genie 0

An annoying CMD-like window appears when I am testing the program.

I have been trying to get rid of this CMD-like window because

It's annoying
When I try to close the CMD-like program the C++ program closes as well

I have searched the Internet far and wide, but to no avail.

Can anyone help?

Minxin Yu 13,506 Reputation points Microsoft External Staff

2023-04-03T05:53:54.3933333+00:00

What C++ project did you create? Can you provide steps to reproduce the problem?
phoenix genie 0 Reputation points

2023-04-03T14:27:01.1733333+00:00

I crated a program that messes with the screen.

you could put anything in the form of a c++ program and have the console window continue to pop up
RLWA32 49,636 Reputation points

2023-04-03T14:47:24.4666667+00:00

The linker SubSystem property is stored in the .exe that is produced. When Windows loads the .exe it looks at this setting and, if the SubSystem is CONSOLE, it creates a console window and creates standard handles for the applications to use with console-based i/o. If the check during loading detects SubSystem is WINDOWS then the system does not create a console.

2 answers

Your answer

Minxin Yu 13,506 Reputation points Microsoft External Staff

2023-04-03T05:53:54.3933333+00:00

What C++ project did you create? Can you provide steps to reproduce the problem?
phoenix genie 0 Reputation points

2023-04-03T14:27:01.1733333+00:00

I crated a program that messes with the screen.

you could put anything in the form of a c++ program and have the console window continue to pop up
RLWA32 49,636 Reputation points

2023-04-03T14:47:24.4666667+00:00

The linker SubSystem property is stored in the .exe that is produced. When Windows loads the .exe it looks at this setting and, if the SubSystem is CONSOLE, it creates a console window and creates standard handles for the applications to use with console-based i/o. If the check during loading detects SubSystem is WINDOWS then the system does not create a console.

Answer 1

RLWA32 49,636

@phoenix genie The behavior you describe is typical of an application that creates a gui (windowed) interface but has been created as a console application.

For example -

ConsoleDemo

This can happen if you create your Visual Studio project using the Console Application template or the Empty Project template. Either one of the templates will create a project with the following Linker property -

SubsysConsole

To prevent Windows from creating a console window make this change

SubsysWindows

However, depending on your application, additional changes to your code may be needed to satisfy linker requirements.

phoenix genie 0 Reputation points

2023-04-03T15:13:51.97+00:00

It's now pointing out errors about "LNK2001" referencing MSVCRT.lib(exe_winmain.obj)
RLWA32 49,636 Reputation points

2023-04-03T15:24:18.8333333+00:00
In C/C++ the entry point for a console application is typically main (or wmain for a UNICODE build).

The entry point for a gui application without a console is WinMain (or wWinMain for a UNICODE build).

A brief example for WinMain -

#include <windows.h> int APIENTRY WinMain(HINSTANCE hInst, HINSTANCE hInstPrev, PSTR cmdline, int cmdshow) { return MessageBox(NULL, "hello, world", "caption", 0); }
RLWA32 49,636 Reputation points

2023-04-06T07:04:42.1266667+00:00

@phoenix genie Any updates on this?

Answer 2

Minxin Yu 13,506 Microsoft External Staff

Hi,phoenix genie
In addition, Visual Studio provides desktop template project.
You can create a desktop application through the Windows Desktop Wizard.
User's image

enter image description here

Best regards, Minxin Yu

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Minxin Yu 13,506 Reputation points Microsoft External Staff

2023-04-06T01:59:02.38+00:00

Hi,phoenix genie
May I know if you have got any chance to check my answer? Is your problem solved?

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I'm trying to make a C++ program, but when I want to test it...

2 answers

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