C++ Stop displaying bitmap

How can I stop displaying the bitmap in my Win32 Project. I have a method that I'm calling in WM_PAINT called LoadBitmap. It's code looks like this:

bool LoadBitmap(LPTSTR szfilename, HDC winhdc, int x, int y) {
    HBITMAP bitmap;
    bitmap = (HBITMAP)LoadImage(NULL, szfilename, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
    if (bitmap == NULL) {
        ::MessageBox(NULL, _T("Bitmap failed"), NULL, MB_OK);
        return false;
    }

    HDC hdc;
    hdc = ::CreateCompatibleDC(winhdc);
    if (hdc == NULL)
    {
        ::MessageBox(NULL, _T("HDC FAILED"), NULL, MB_OK);
        return false;
    }

    BITMAP qbitmap;
    int ireturn = GetObject(reinterpret_cast<HGDIOBJ>(bitmap), sizeof(BITMAP), reinterpret_cast<LPVOID>(&qbitmap));
    if (!ireturn) {
        ::MessageBox(NULL, _T("RETURN FAILED"), NULL, MB_OK);
        return false;
    }
    HBITMAP holdbitmap = (HBITMAP)::SelectObject(hdc, bitmap);
    if (holdbitmap == NULL) {
        ::MessageBox(NULL, _T("HOLD FAILED"), NULL, MB_OK);
        return false;
    }

    BOOL qRetBlit = ::BitBlt(winhdc, x, y, qbitmap.bmWidth, qbitmap.bmHeight, hdc, 0, 0, SRCCOPY);
    if (!qRetBlit)
    {
        ::MessageBox(NULL, _T("BLIT FAILED"), NULL, MB_OK);
        return false;
    }
    ::SelectObject(hdc, holdbitmap);
    ::DeleteDC(hdc);
    ::DeleteObject(bitmap);
    return true;

}

NOTE x and y change continuously. When x and y change however, the previous instance of them stays behind.

How can I stop displaying a bitmap once it has been painted in a new position?