#include <windows.h>

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR, INT iCmdShow)
{
    HWND     hWnd;
    MSG      msg;
    WNDCLASS wndClass;

    wndClass.style = CS_HREDRAW | CS_VREDRAW;
    wndClass.lpfnWndProc = WndProc;
    wndClass.cbClsExtra = 0;
    wndClass.cbWndExtra = 0;
    wndClass.hInstance = hInstance;
    wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    wndClass.hbrBackground = (HBRUSH)(COLOR_BACKGROUND);//(HBRUSH)GetStockObject(NULL_BRUSH);
    wndClass.lpszMenuName = NULL;
    wndClass.lpszClassName = TEXT("Teste");

    RegisterClass(&wndClass);

    hWnd = CreateWindow(
        TEXT("Teste"),   // window class name
        TEXT(""),  // window caption
        WS_POPUP,      // window style
        300,            // initial x position
        300,            // initial y position
        250,            // initial x size
        50,            // initial y size
        NULL,                     // parent window handle
        NULL,                     // window menu handle
        hInstance,                // program instance handle
        NULL);                    // creation parameters

    ShowWindow(hWnd, iCmdShow);
    UpdateWindow(hWnd);
    SetTimer(hWnd, 1, 5000, NULL);

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam;
}  // WinMain

LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
    WPARAM wParam, LPARAM lParam)
{
    HDC          hdc;
    PAINTSTRUCT  ps;

    switch (message)
    {
    case WM_PAINT:
        hdc = BeginPaint(hWnd, &ps);
        RECT pos;
        pos.left = 0;
        pos.right = 249;
        pos.top = 0;
        pos.bottom = 49;
        DrawText(hdc, "Texto da janela", -1, &pos, DT_CENTER or DT_VCENTER);
        EndPaint(hWnd, &ps);
        return 0;
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    case WM_TIMER:
        PostQuitMessage(0);
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
} // WndProc