I'm trying to get information about printing margins so my app can
show where the edges of the paper are correctly as well as the content
area.
I thought that's what NSPrintInfo methods such as -topMargin gave me -
the margins set by the Page Setup... dialog. But they never change no
matter what I do in the Page Setup dialog. The value of NSPaperSize is
also the same. I read the Printing Guide but it doesn't mention
margins at all.
Here are two examples, logged from the -setPrintInfo: method of
NSDocument. The first paper is a custom size based on A4 with margins
set to 0, the second set to 3 cm. As can be seen, apart from the paper
name, the info is identical.
2009-07-09 14:31:45.310 Ortelius[16094:10b] set print info: {
NSBottomMargin = 90;
NSCopies = 1;
NSDetailedErrorReporting = 0;
NSFaxNumber = "";
NSFirstPage = 1;
NSHorizonalPagination = 2;
NSHorizontallyCentered = 1;
NSJobDisposition = NSPrintSpoolJob;
NSLastPage = 2147483647;
NSLeftMargin = 72;
NSMustCollate = 1;
NSOrientation = 0;
NSPagesAcross = 1;
NSPagesDown = 1;
NSPaperName = "A4 Minimal Margins 1";
NSPaperSize = NSSize: {651.969, 935.433};
NSPrintAllPages = 1;
NSPrintProtected = 0;
NSPrintTime = 0001-01-01 10:00:00 +1000;
NSPrinter = {
"Device Description" = {
NSDeviceIsPrinter = YES;
};
"Language Level" = 3;
Name = "Canon i550";
Type = "Canon i550";
};
NSPrinterName = "Canon i550";
NSRightMargin = 72;
NSSavePath = "";
NSScalingFactor = 1;
NSTopMargin = 90;
NSVerticalPagination = 0;
NSVerticallyCentered = 1;
}
2009-07-09 14:32:01.407 Ortelius[16094:10b] set print info: {
NSBottomMargin = 90;
NSCopies = 1;
NSDetailedErrorReporting = 0;
NSFaxNumber = "";
NSFirstPage = 1;
NSHorizonalPagination = 2;
NSHorizontallyCentered = 1;
NSJobDisposition = NSPrintSpoolJob;
NSLastPage = 2147483647;
NSLeftMargin = 72;
NSMustCollate = 1;
NSOrientation = 0;
NSPagesAcross = 1;
NSPagesDown = 1;
NSPaperName = "A4 Big Margins";
NSPaperSize = NSSize: {651.969, 935.433};
NSPrintAllPages = 1;
NSPrintProtected = 0;
NSPrintTime = 0001-01-01 10:00:00 +1000;
NSPrinter = {
"Device Description" = {
NSDeviceIsPrinter = YES;
};
"Language Level" = 3;
Name = "Canon i550";
Type = "Canon i550";
};
NSPrinterName = "Canon i550";
NSRightMargin = 72;
NSSavePath = "";
NSScalingFactor = 1;
NSTopMargin = 90;
NSVerticalPagination = 0;
NSVerticallyCentered = 1;
}
So how can I get the information I need - the size of each margin? And
if that's not what -topMargin et. al. are for, what *are* they for?
--Graham
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