Codeblocks undefined reference to “WinMain@16”

I have builded Urho3D library through CMake and get Urho3D.a file. Then I create my own Codeblocks GUI project and link Urho3D.a file. After this I add Urho3D includes, MyProgramApp.cpp and MyProgramApp.hpp file. In the file MyProgramApp.hpp I write MyProgram class, that is inherited from Urho3D::Application and write DEFINE_APPLICATION_MAIN(HangarsClientApp) after it, like this :

[code]class MyProgramApp : public Application
{
OBJECT(MyProgramApp)
public:
// Constructors
MyProgramApp(Context* context);
virtual ~MyProgramApp();

public:
// Application class overrided functions
virtual void Setup();
virtual void Start(); // Called after engine initialization. Setup application & subscribe to events here
virtual void Stop(); // Perform optional cleanup after main loop has terminated
};

DEFINE_APPLICATION_MAIN(MyProgramApp)[/code]

In the result, I get undefined reference to `WinMain@16’|

Platform : Win32. Compiler: gcc 5.2.0 (i686-posix-dwarf-rev0, Built by MinGW-W64 project)

How I can fix it ?

Hi itisscan,

You will probably want to use a “Custom Makefile” project, not a GUI project.
You can generate your project’s build tree(s) using the same cmake_* scripts used to build Urho.

To do this, you will need some things in your source tree (like CMakeLists.txt and CMake/* scripts):
urho3d.github.io/documentation/1 … brary.html

Each of the generated build trees (debug/release/whatever) will have their own makefile. Specify these in your IDE’s project configurations and they should build.

Hope that helps.

The project is most likely set as console application on CodeBlocks. Try the following:
[ul]- Go to the Project Menu and Select “Build options…”[/ul]
[ul]- Below the “Selected Compiler” drop-down you will see sets of tabs. Select the Compiler Setting tab[/ul]
[ul]- Under the tabs below it select “#defines” [/ul]
[ul]- Add the WIN32 AND _WINDOWS one per line[/ul]

749×531

It’s certainly possible to use cmake generators other than the ‘makefile’ I described.
I just noticed cmake_codeblock.bat, which should generate a CodeBlocks project for you, which you might find preferable.

On MSWin platform, DEFINE_APPLICATION_MAIN() uses WinMain entry point by default (a “GUI” app). This behavior can be changed with the cmake option URHO3D_WIN32_CONSOLE:
urho3d.github.io/documentation/H … lding.html