SetPrinter
void SetPrinter(BPrinter* printer, bool keepSettings);
void SetPrinter(Printer* p) { fPrinter = p; }
app->SetPrinter(printer);
fJob->SetPrinter(this);
void SetPrinter(const char* printer) { fPrinter = printer; }
void SetPrinter(const char* p) { fPrinter = p; }