косьвеннная рекурсия

#include "stdafx.h"
#include "WindowsProject2.h"

#define MAX_LOADSTRING 100


HINSTANCE hInst;                                
WCHAR szTitle[MAX_LOADSTRING];                  
WCHAR szWindowClass[MAX_LOADSTRING];      


ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPWSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);


    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_WINDOWSPROJECT2, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);

   
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WINDOWSPROJECT2));

    MSG msg;


    while (GetMessage(&msg, nullptr, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }

    return (int) msg.wParam;
}




ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEXW wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style          = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINDOWSPROJECT2));
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = MAKEINTRESOURCEW(IDC_WINDOWSPROJECT2);
    wcex.lpszClassName  = szWindowClass;
    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

    return RegisterClassExW(&wcex);
}


BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hInst = hInstance; 

   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}
void FourEnd(HDC hdc, int x, int y, int size)
{
	MoveToEx(hdc, x, y - size, NULL);
	LineTo(hdc, x + size / 4, y - size / 4);
	LineTo(hdc, x + size, y);
	LineTo(hdc, x + size / 4, y + size / 4);
	LineTo(hdc, x, y + size);
	LineTo(hdc, x - size / 4, y + size / 4);
	LineTo(hdc, x - size, y);
	LineTo(hdc, x - size / 4, y - size / 4);
	LineTo(hdc, x, y - size);
}
void RecursiveFourEnd(HDC hdc, int x, int y, int size)
{
	FourEnd(hdc, 5000, 5000, 128);
	if (size == 16)
	{
		return;
	}
	RecursiveFifeEnd(hdc, x, y - size, size / 2);
	RecursiveFifeEnd(hdc, x - size, y, size / 2);
	RecursiveFifeEnd(hdc, x, y + size, size / 2);
	RecursiveFifeEnd(hdc, x + size, y, size / 2);
}
void FifeEnd(HDC hdc, int x, int y, int size)
{
	MoveToEx(hdc, x, y - size, NULL);
	LineTo(hdc, x + size / 4, y);
	LineTo(hdc, x + size, y);
	LineTo(hdc, x + size / 4, y + size / 4);
	LineTo(hdc, x + size, y + size);
	LineTo(hdc, x, y + size / 2);
	LineTo(hdc, x - size, y + size);
	LineTo(hdc, x - size / 4, y + size / 4);
	LineTo(hdc, x - size, y);
	LineTo(hdc, x - size / 4, y);
	LineTo(hdc, x, y - size);
}
	void RecursiveFifeEnd(HDC hdc, int x, int y, int size)
{
		FifeEnd(hdc, x, y, size);
		if (size == 16)
		{
			return;
		}
		RecursiveFourEnd(hdc, x, y - size, size / 2);
		RecursiveFourEnd(hdc, x + size, y, size / 2);
		RecursiveFourEnd(hdc, x - size, y, size / 2);
		RecursiveFourEnd(hdc, x - size, y + size, size / 2);
		RecursiveFourEnd(hdc, x + size, y + size, size / 2);
	
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
          
            switch (wmId)
            {
            case IDM_ABOUT:
                DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
                break;
            case IDM_EXIT:
                DestroyWindow(hWnd);
                break;
            default:
                return DefWindowProc(hWnd, message, wParam, lParam);
            }
        }
        break;
    case WM_PAINT:
        {

            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hWnd, &ps);
		
			RecursiveFifeEnd(hdc, 500, 230, 128);
			
            EndPaint(hWnd, &ps);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}


INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    UNREFERENCED_PARAMETER(lParam);
    switch (message)
    {
    case WM_INITDIALOG:
        return (INT_PTR)TRUE;

    case WM_COMMAND:
        if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
        {
            EndDialog(hDlg, LOWORD(wParam));
            return (INT_PTR)TRUE;
        }
        break;
    }
    return (INT_PTR)FALSE;
}