HandmadeHero/project/handmade_win32.cpp

#include "win32.h"

int CALLBACK WinMain(
	HINSTANCE hInstance,
	HINSTANCE hPrevInstance,
	LPSTR     lpCmdLine,
	int       nShowCmd
)
{
	MessageBox( 0, L"First message!", L"Handmade Hero", MB_OK | MB_ICONINFORMATION );

	return 0;
}