How do I get "Page Attributes" option in Cocoa print dialog? - cocoa

Question

The program I'm writing runs under OS X 10.5 Leopard. My target has its Base SDK and Deployment Target both set to Mac OS X 10.5. When I initiate printing, my print dialog doesn't show the Page Attributes option in which the user can select page size and orientation.
Other programs running under Leopard do show this option:
Here's the code that initiates printing:
-(void)print {
NSPrintInfo *printInfo = [NSPrintInfo sharedPrintInfo];
TemperaturePressurePrintView *printView = [[TemperaturePressurePrintView alloc] initWithFrequencies:frequencies];
if (printView) {
[[NSPrintOperation printOperationWithView:printView printInfo:printInfo] runOperation];
[printView release];
}
}
What do I need to do to get Page Attributes to show up in my print dialog?

Answer 1

This was a tough thing to search for because the results were mostly about using the print panel, not programming one. I finally found a clue on Cocoabuilder where it mentions NSPrintPanelOptions and NSPrintPanel's -setOptions: method.
This code accomplishes what I need:
-(void)print {
NSPrintInfo *printInfo = [NSPrintInfo sharedPrintInfo];
TemperaturePressurePrintView *printView = [[TemperaturePressurePrintView alloc] initWithFrequencies:frequencies];
if (printView) {
NSPrintOperation *op = [NSPrintOperation printOperationWithView:printView printInfo:printInfo];
[[op printPanel] setOptions:[[op printPanel] options] | NSPrintPanelShowsPageSetupAccessory];
[op runOperation];
[printView release];
}
}

Answer 2

It's a few years after the original answer and macOS Sierra seems to have introduced a bug into the behaviour of panels that have the 'NSPrintPanelShowsPageSetupAccessory' option set. Invalid values, such as a ridiculously large scale, cause crashes instead of displaying an alert sheet.
Fortunately there is a workaround. Using
NSPrintPanelShowsPaperSize | NSPrintPanelShowsOrientation | NSPrintPanelShowsScaling
instead seems to result in a panel that works fine.