#include<stdio.h>
#Pragma warning(Push, 3)
#include<windows.h>
#Pragma warning(pop)

LRESULT CALLBACK MainWindowProc(
    _In_ HWND WindowHandle,        // handle to window
    _In_ UINT Message,        // message identifier
    _In_ WPARAM wParam,    // first message parameter
    _In_ LPARAM LParam);    // second message parameter


DWORD CreatMainGameWindow(void);
/////////////////////////////////////////







int WinMain(HINSTANCE Instance, HINSTANCE PreviousInstance, PSTR CommandLine, INT CmdShow)
{

UNREFERENCED_PARAMETER(PreviousInstance);
UNREFERENCED_PARAMETER(CommandLine);
UNREFERENCED_PARAMETER(CmdShow);




if (CreatMainGameWindow(Instance) != ERROR_SUCCESS)
{
goto Exist;
}




///////////////////////////////

MSG Message;

while(GetMessageA(&Message, NULL, 0, 0) > 0)
    {
        TranslateMessage(&Message);
        DispatchMessageA(&Message);
    }

Exist:
return (0);
}


LRESULT CALLBACK MainWindowProc(
    _In_ HWND WindowHandle,        // handle to window
    _In_ UINT Message,        // message identifier
    _In_ WPARAM wParam,    // first message parameter
    _In_ LPARAM LParam);    // second message parameter
{


LRESULT Result = 0;
 
 
    switch (Message) 
    { 

        case WM_CLOSE:
       {
        PostQuitMessage(0);
        break;
       }
        default: 
          {
          Result = return DefWindowProcA(hwnd, uMsg, wParam, lParam); 
          }
    } 
    return (Result); 
} 


/////////////////////////////////////


DWORD CreatMainGameWindow(void);

{
DWORD Result = ERROR_SUCCESS




    WNDCLASSEXA WindowClass = { 0 };
    HWND WindowHandle = 0;
    //MSG Msg;

    WindowClass.cbSize        = sizeof(WNDCLASSEXA);
    WindowClass.style         = 0;
    WindowClass.lpfnWndProc   = MainWindowProc;
    WindowClass.cbClsExtra    = 0;
    WindowClass.cbWndExtra    = 0;
    WindowClass.hInstance     = GetModuleHandleA(NULL);
    WindowClass.hIcon         = LoadIconA(NULL, IDI_APPLICATION);
    WindowClass.hIconSm       = LoadIconA(NULL, IDI_APPLICATION);
    WindowClass.hCursor       = LoadCursorA(NULL, IDC_ARROW);
    WindowClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    WindowClass.lpszMenuName  = NULL;
    WindowClass.lpszClassName = "BILL_GAME_WINDOWCLASS";
    
    if (RegisterClassExA(&WindowClass) == 0)
    {
        Result = GetLastError();
        MessageBoxA(NULL, "Window Registration Failed!", "Error!", MB_ICONEXCLAMATION | MB_OK);
        goto Exit;
    }

//////////////////////////////////////////////


 WindowHandle = CreateWindowExA(
        WS_EX_CLIENTEDGE,
        WindowClass.lpszClassName,
        "Window Title",
        WS_OVERLAPPEDWINDOW | WS_VISIBLE,
        CW_USEDEFAULT, CW_USEDEFAULT, 240, 120,
        NULL, NULL, GetModuleHandleA(NULL), NULL);

    if(WindowHandle == NULL)
    {
        Result = GetLastError();
        MessageBox(NULL, "Window Creation Failed!", "Error!",
            MB_ICONEXCLAMATION | MB_OK);
        goto Exit;
    }


//////////////////////////////////////////////use only if you don't have WS_VISIBLE


//ShowWindow(WindowHandle, TRUE);


//////////////////////////////////////////////



Exist:

return(Result);
}