FreeImage overlay images

#include <iostream>

using namespace std;

#include "FreeImage.h"

int main()
{
    cout << "Hello world!" << endl;

    FIBITMAP* arquivo = FreeImage_Load( FIF_JPEG , "_tela.02.jpg", 0);
    FIBITMAP* paste = FreeImage_Load( FIF_JPEG , "tux-avatar-kakashi.jpg", 0);



    // coloca sobre
    RGBQUAD src, dst;
    int wSrc,hSrc, wDst, hDst;
    int offset = 0;
    int userOffset = 0;
    wSrc = FreeImage_GetWidth(paste);
    hSrc = FreeImage_GetHeight(paste);
    wDst = FreeImage_GetWidth(arquivo);
    hDst = FreeImage_GetHeight(arquivo);

    offset = ( hDst - userOffset) - hSrc;

    for( int x=0; x<wSrc; x++)
    {
        for( int y=0;y<hSrc; y++)
        {
            FreeImage_GetPixelColor(paste, x,y, &src);
            FreeImage_SetPixelColor(arquivo, x,y+offset, &src );
        }
    }

    FreeImage_Save(FIF_JPEG,arquivo, "saida.jpg", 90);

    return 0;
}