itoa(f_static(), valor, 10);

#include <windows.h>
#include "resource.h"

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

int f_static();

#define BTN_AP 1

static HWND r;

static char valor[200];
char vs[500] = "Irmãos, não faleis mal uns dos outros. Quem fala mal de \
um irmão e julga a seu irmão fala mal da lei e julga a lei; \
e, se tu julgas a lei, já não és observador da lei, mas juiz. Tiago 4:11";

int WINAPI WinMain(HINSTANCE hCopia, HINSTANCE hPI, PSTR szCL, int iCS) {
    static TCHAR szAppName[] = TEXT("Background");
    HWND         hwnd;
    MSG          msg;
    WNDCLASS     wndclass;

    wndclass.style         = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc   = WndProc;
    wndclass.cbClsExtra    = 0;
    wndclass.cbWndExtra    = 0;
    wndclass.hInstance     = hCopia;
    wndclass.hIcon         = LoadIcon(hCopia, IDI_ICON);
    wndclass.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wndclass.hbrBackground = GetSysColorBrush(WHITE_BRUSH);
    wndclass.lpszMenuName  = NULL;
    wndclass.lpszClassName = szAppName;

    if(!RegisterClass(&wndclass)) {
        MessageBox(NULL, TEXT("Error!"), szAppName, MB_ICONERROR);
        return 0;
    }
    hwnd = CreateWindow(
        szAppName, TEXT("itoa(f_static(), valor, 10);"), WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 380, 230,
        NULL, NULL, hCopia, NULL
    );

    ShowWindow(hwnd, iCS);
    UpdateWindow(hwnd);

    while(GetMessage(&msg, NULL, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage (&msg);
        FreeConsole();
    }
    return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam) {
    static HPALETTE hPalette;
    static int      cxClient, cyClient;
    HBRUSH          hBrush;
    HDC             hdc;
    int             i;
    LOGPALETTE     *plp;
    PAINTSTRUCT     ps;
    RECT            rect;

    switch(message) {
        case WM_CREATE:
            plp=malloc(sizeof(LOGPALETTE)+64*sizeof(PALETTEENTRY));
            plp->palVersion    = 0x0300;
            plp->palNumEntries = 65;

            for(i = 0; i<65; i++) {
                plp->palPalEntry[i].peRed  =(BYTE) min(200, 4*i);
                plp->palPalEntry[i].peGreen=(BYTE) min(100, 4*i);
                plp->palPalEntry[i].peBlue =(BYTE) min(10, 4*i);
                plp->palPalEntry[i].peFlags= 0;
            }
            hPalette = CreatePalette(plp);
            free(plp);

            CreateWindow(
                TEXT("static"), TEXT("Contador"), WS_VISIBLE | WS_CHILD| DT_CENTER,
                10, 20, 320, 20,
                hwnd, NULL, NULL, NULL
            );
            r = CreateWindow(
                TEXT("static"), TEXT(""), WS_VISIBLE | WS_CHILD,
                10, 60, 80, 20,
                hwnd, NULL, NULL, NULL
            );
            CreateWindow(
                TEXT("button"),TEXT("Contagem usando (static int)"),WS_VISIBLE|WS_CHILD,
                120, 60, 210, 20,
                hwnd, (HMENU) BTN_AP, NULL, NULL
            );
            CreateWindow(
                TEXT("static"), vs, WS_VISIBLE | WS_CHILD,
                10, 100, 320, 70,
                hwnd, (HMENU) BTN_AP, NULL, NULL
            );
            return 0;
        case WM_SIZE:
            cxClient = LOWORD(lParam);
            cyClient = HIWORD(lParam);
            return 0;
        case WM_PAINT:
            hdc = BeginPaint(hwnd, &ps);
            SelectPalette(hdc, hPalette, FALSE);
            RealizePalette(hdc);
            for(i = 0; i < 65; i++) {
                rect.left   = i * cxClient / 64;
                rect.top    = 0;
                rect.right  = (i + 1) * cxClient / 64;
                rect.bottom = cyClient;
                hBrush = CreateSolidBrush(PALETTEINDEX(i));
                FillRect(hdc, &rect, hBrush);
                DeleteObject(hBrush);
            }
            EndPaint(hwnd, &ps);
            return 0;
        case WM_QUERYNEWPALETTE:
            if(!hPalette)
                return FALSE;

            hdc = GetDC(hwnd);
            SelectPalette(hdc, hPalette, FALSE);
            RealizePalette(hdc);
            InvalidateRect(hwnd, NULL, FALSE);
            ReleaseDC (hwnd, hdc);
            return TRUE;
        case WM_PALETTECHANGED:
            if(!hPalette || (HWND) wParam == hwnd)
                break;

            hdc = GetDC (hwnd);
            SelectPalette(hdc, hPalette, FALSE);
            RealizePalette(hdc);
            UpdateColors(hdc);
            ReleaseDC(hwnd, hdc);
            return 0;

        case WM_COMMAND:
            itoa(f_static(), valor, 10);

            if(LOWORD(wParam)==BTN_AP) {
                SetWindowText(r, valor);
            }
            return 0;

        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}

int f_static() {
    static int i = 0;
    return (i++);
}

/********************Arquivo: resource.h********************/

#define IDI_ICON 1

/********************Arquivo: resource.rc********************/

#include "afxres.h"
#include "resource.h"

IDI_ICON ICON "project1.ico"