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Leopard Technical Q&As: Graphics & Imaging
The Mac OS X printing system supports a wide variety of PostScript and raster printers and offers advanced graphics features such as an industry-standard PDF spooling format and high-quality color rendering. The printing system also allows printer drivers and applications to present modular and extensible user interfaces based on Apple's human interface guidelines.

View all Printing Technical Q&As.
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CGContext Bounds (HTML)
QA1048: Explains how to determine the bounds of a CGContext.
2001-07-02
CGContextAddLineToPoint, CGContextAddCurveToPoint, et. al. (HTML)
QA1049: Explains why the CGContextAddXYZ APIs don't draw anything immediately.
2001-07-02
CGContextClosePath (HTML)
QA1046: Explains when you should call CGContextClosePath.
2001-10-02
Drawing a Path Multiple Times (HTML)
QA1047: Explains that path drawing operations consume the path.
2001-07-02
Gathering all PostScript Printer Descriptions (PPDs) (HTML)
QA1529: Describes a work around for an issue in PMCopyAvailablePPDs on Mac OS X 10.4 and below
2008-08-08
How do I use PMSessionGetGraphicsContext to get a CGContextRef? (HTML) (日本語 HTML)
Deprecated - QA1216: Describes how to use PMSessionSetDocumentFormatGeneration and PMSessionGetGraphicsContext to get a CGContextRef for printing.
2003-02-25
How to measure CG text (HTML)
QA1051: Explains how to measure Core Graphics text.
2007-08-02
Quartz 2D Interpolation (HTML) (日本語 HTML)
QA1186: Explains how to control Quartz 2D's image interpolation.
2002-10-29
Quartz 2D Thread Safety (HTML) (日本語 HTML)
QA1238: Explains the thread-safety issues for the Quartz 2D API.
2003-02-25
Retain Counts of io_object_t Objects in IOKit.framework (HTML) (日本語 HTML)
QA1195: Distinguishes between the retain counts of an I/O Kit kernel object and its io_object_t user space proxy.
2008-09-24
Saving the current Core Graphics Path (HTML)
QA1056: Explains that the Core Graphics save and restore GState APIs do not affect the path.
2001-10-02
Tioga PostScript Printing Plugins in Mac OS X 10.2 (HTML) (日本語 HTML)
QA1085: Why Tioga printing plugins for PostScript printing aren't called on Mac OS X 10.2 and later.
2003-07-14
Turning Off Core Graphics Clipping (HTML)
QA1050: Explains how to clear the clipping path for a CGContext.
2001-07-02
Unexpected CG state changes (HTML)
QA1045: Explains why the Core Graphics drawing state sometimes changes for no apparent reason.
2001-07-02
Why does logging keep my Printer Module from working? (HTML) (日本語 HTML)
Deprecated - QA1182: Describes some problems with standard printf logging in a Printer Module on Jaguar.
2002-11-06
Why don't all of my PDE localizations show up in all applications? (HTML) (日本語 HTML)
QA1185: Explains why some PDE localizations might not appear in all applications.
2002-10-16