C++ MaskCheck

bool MaskCheck(int StartOff, const BYTE* Pattern, const char* Mask)
{
    for (unsigned int i=0; i<strlen(Mask); i++)
    {
        if (Mask[i] == '?') continue;

        if (Mask[i] == 'x' && Pattern[i] != this->DumpedRegion[StartOff + i])
            return false;
    }
    return true;
}