XpSetContext - Sets or unsets a print context with the specified display
connection to the X Print Server.
cc [ flag... ] file... -lXp [ library... ]
( display, print_context
Display * display
- Specifies a pointer to the Display structure; returned from
- A pre-existing print context on the same X Server.
XpSetContext sets the print context for a display connection. All subsequent
print operations that do not explicitly take a print context-id (for example,
XpStartJob) on display will use and act upon the print context set by this
call, until the print context is unset or XpDestroyContext is called. The
print context can be set and used on multiple jobs, if not destroyed.
is None, XpSetContext will unset (disassociate) the
print context previously associated with display. If there was no previously
associated print context, no action is taken. The content of the formerly
associated print context is not affected by this call, and other display
connections may continue to use the print context.
Since font capabilities can vary from printer to printer, XpSetContext may
modify the list of available fonts (see XListFonts) on display, and the actual
set of usable fonts (see XLoadFont). A unique combination of fonts may be
available from within a given print context; a client should not assume that
all the fonts available when no print context is set will be available when a
print context is set.
When a print context is set on a display connection, the default behavior of
ListFonts and ListFontsWithInfo is to list all of the fonts normally
associated with the X print server (i.e. fonts containing glyphs) as well as
any internal printer fonts defined for the printer. The xp-listfonts-modes
attribute is provided so that applications can control the behavior of
ListFonts and ListFontsWithInfo and is typically used to show just internal
printer fonts. Using only internal printer fonts is useful for performance
reasons; the glyphs associated with the font are contained within the printer
and do not have to be downloaded.
If the value of xp-listfonts-modes includes xp-list-glyph-fonts, ListFonts and
ListFontsWithInfo will include all of the fonts available to the server that
have glyphs associated with them. If the value of xp-listfonts-modes includes
xp-list-internal-printer-fonts, then ListFonts and ListFontsWithInfo will
include all of the fonts defined as internal printer fonts.
When the print context is unset or XpDestroyContext is called, the available
fonts on display revert back to what they were previously.
- A valid print context-id has not been set prior to making this call.