On Jul 9, 2009, at 7:48 PM, Graham Cox wrote:
Thanks Joel, certainly setting the margins directly does work. What I'm left wondering is what they are actually for - they are never set by he Page Setup panel and never change with changes to paper size, printer, etc.
The docs aren't specific, and it is probably worth filing bugs against the docs. It takes some investigating, testing, and looking at sample code to get the whole picture.
Page setup only sets five or so settings, listed in the "constants" section of NSPrintInfo. I would never have thought that paper size or printer would effect margins, and I am glad that they don't as it would lead to highly undesirable behavior. Printer maybe because different printers have different minimum margins, but unfortunately Apple doesn't give us that for free.
Paper size should only be used for its namesake--i.e. to specify the dimensions of the physical page and nothing else. In fact, nothing else is effected AFAIK, and as you may be seeing.
My conclusion is that these fields are merely a convenience for specifying arbitrary user margins, and if you want to use them you have to a) add UI to set them and b) make use of them in your code somewhere. By default they do nothing, are ignored and have no effect whatsoever on printing unless your code decides not to ignore them. Unfortunately this is all guesswork as the docs do not discuss it anywhere I can find. At the very least I will file a bug asking for better documentation on this.
Yes, but a) only though. Perhaps you mean something else by b) but I can attest that in fact when you change the margins of an NSPrintInfo that any print job using that object will indeed use the specified margins.
HTH, Keary Suska Esoteritech, Inc. "Demystifying technology for your home or business" _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
