int BC_WindowBase::flash(int x, int y, int w, int h, int flush)
{
//printf("BC_WindowBase::flash %d %d %d %d %d\n", __LINE__, w, h, this->w, this->h);
int BC_WindowBase::flash(int x, int y, int w, int h, int flush)
{
//printf("BC_WindowBase::flash %d %d %d %d %d\n", __LINE__, w, h, this->w, this->h);