import std.c.windows.windows;

extern (C) void gc_init();
extern (C) void gc_term();
extern (C) void _minit();
extern (C) void _moduleCtor();
extern (C) void _moduleDtor();
extern (C) void _moduleUnitTests();

extern (Windows)
int WinMain(HINSTANCE hInstance,
 HINSTANCE hPrevInstance,
 LPSTR lpCmdLine,
 int nCmdShow)
{
    int result;

    gc_init();   // initialize garbage collector
    _minit();   // initialize module constructor table

    try
    {
 _moduleCtor();  // call module constructors
 _moduleUnitTests(); // run unit tests (optional)

 result = myWinMain(hInstance, hPrevInstance, lpCmdLine, nCmdShow);

 _moduleDtor();  // call module destructors
    }

    catch (Object o)  // catch any uncaught exceptions
    {
 MessageBoxA(null, cast(char *)o.toString(), "Error",
      MB_OK | MB_ICONEXCLAMATION);
 result = 0;  // failed
    }

    gc_term();   // run finalizers; terminate garbage collector
    return result;
}

int myWinMain(HINSTANCE hInstance,
 HINSTANCE hPrevInstance,
 LPSTR lpCmdLine,
 int nCmdShow)
{
    /* ... insert user code here ... */
 MessageBoxA(null, "HelloWorld", "MSG",MB_OK | MB_ICONEXCLAMATION);
 //就这行是我写的，其他都是英文说明上的
 return 1;
}