Desktop Printers
In QuickDraw GX, a printer is represented by an icon on the desktop, which is similar to the way a hard disk or a shared volume is represented on the desktop. Thus, in QuickDraw GX, printers are often called desktop printers. A desktop printer is more than just an icon, however, because a desktop printer is associated with a queue to which print jobs are sent. A desktop printer also provides the ability to control the queue and to control the hardware itself with software.A user can print from the Finder by dragging the document to the desktop printer icon. Figure 1-3 shows the user dragging the document "My file" to the desktop printer icon named "Gutenberg." When the user releases the mouse, QuickDraw GX puts the print file representation of the document into the printer's queue.
Figure 1-3 Dragging a document to a desktop printer icon
Your application must implement the Print Document Apple event that allows Finder printing. For more information about Finder printing, see the chapter "Core Printing Features" in this book.
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