Создание окна по таймеру

#include "stdafx.h"
 
#include <windows.h> 
 
LRESULT CALLBACK WndProc (HWND hWnd, UINT msg, WPARAM wparam, LPARAM lparam);
 
HINSTANCE hInst;
 
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASSEX wc;
    HWND hWnd;
    MSG msg;
    
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.style = CS_HREDRAW |CS_VREDRAW;
    wc.lpfnWndProc = WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wc.lpszMenuName = NULL;
    wc.lpszClassName = "Base";
    wc.hIconSm = LoadIcon(NULL,IDI_APPLICATION);
    
    if (!RegisterClassEx(&wc))
        return 0;
    if (!(hWnd = CreateWindowEx (NULL, "Base", "", WS_OVERLAPPEDWINDOW | WS_VISIBLE, CW_USEDEFAULT,
        CW_USEDEFAULT, 484, 400, NULL, NULL, hInst, NULL)))
        return (0);
    
    ShowWindow(hWnd, SW_SHOWDEFAULT);
    UpdateWindow(hWnd);
    
    while(GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (msg.wParam);
}
 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HWND hButton[4];
    static int count=1;
    
    switch(message)
    {
    case WM_CREATE:
        {
            SetTimer (hWnd, 1, 2000, 0);
            hButton[0] = CreateWindow ("BUTTON", "Push", WS_CHILD | WS_VISIBLE,
                0, 0, 119, 20, hWnd, (HMENU)100, hInst, 0);
        }
        break;
    
    case WM_TIMER:
        {
            hButton[count] = CreateWindow ("BUTTON", "Push", WS_CHILD | WS_VISIBLE,
                count*119, 0, 119, 20, hWnd, (HMENU)100, hInst, 0);
            if (count!=3)
                count++;
            else KillTimer (hWnd, 1);
        }
        break;
        
        case WM_DESTROY:
            {
                PostQuitMessage(0);
                return (0);
            }
        break;
    }
    return (DefWindowProc(hWnd, message, wParam, lParam));
}